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Results for "

thiol groups

" in MedChemExpress (MCE) Product Catalog:

By Targets:	ADC Cytotoxin (1) ADC Linker (7) Amino Acid Derivatives (1) Biochemical Assay Reagents (40) Drug-Linker Conjugates for ADC (1) Endogenous Metabolite (2) Fluorescent Dye (29) Glutathione S-transferase (1) Ligands for E3 Ligase (1) Liposome (8) Microtubule/Tubulin (1) PROTAC Linkers (7) Reactive Oxygen Species (2)
By Research Areas:	Cancer (26) Inflammation/Immunology (1) Metabolic Disease (2) Neurological Disease (1)
Click Chemistry:	ADC Synthesis (3) TCO (5) DBCO (1) PROTAC Synthesis (2) Azide (3) Alkynes (4)
Oligonucleotides:	Pegylated Lipids (2) Phospholipids (6) Polymers (4)

101

Inhibitors & Agonists

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Click Chemistry

Oligonucleotides

Cat. No.	Product Name	Target	Research Areas	Chemical Structure

HY-D1390A

Sulfo-Cy5-Mal	Fluorescent Dye	Others
Sulfo-Cy5-Mal is a fluorescent dye with the form of active ester that reacts with thiol groups in proteins to form stable conjugates. Sulfo-Cy5-Mal that can be used to label protein .

HY-W013754

S-Hexylglutathione	Glutathione S-transferase	Others
S-Hexylglutathione is an S-substituted glutathione in which the hydrogen of the thiol has been replaced by a hexyl group. S-Hexylglutathione is also an competitive inhibitor against glutathione-S-transferase. S-Hexylglutathione can be used as an affinity chromatographic ligand for glutathione-S-transferase and glutathione peroxidase .

HY-156377

Biotin-PEG7-Maleimide	Drug-Linker Conjugates for ADC	Cancer
Biotin-PEG7-Maleimide is a biotinylation reagent that reacts with thiol groups (SH). Biotin-PEG7-Maleimide can be used as Drug-Linker Conjugates for ADCs .

HY-137541

2-Nitro-5-thiocyanatobenzoic acid NTCB	Biochemical Assay Reagents	Others
2-Nitro-5-thiocyanatobenzoic acid (NTCB) is a highly reactive reagent that transfers its cyano group rapidly to a nucleophilic thiolate. 2-Nitro-5-thiocyanatobenzoic acid has been proposed as a reagent for converting thiol groups in proteins into their S-cyano derivatives .

HY-D1526

N-(4-Anilino-1-naphthyl)maleimide	Fluorescent Dye	Others
N-(4-Anilino-1-naphthyl)maleimide is a fluorescent probe that can be used to detect thiol groups in proteins. N-(4-Anilino-1-naphthyl)maleimide reacts with thiol groups and immediately produces a stable fluorescent compound with the λ_ex=355 nm, λ_em=448 nm .

HY-D1654

BDP 581/591 maleimide	Fluorescent Dye	Others
BDP 581/591 maleimide is a linker of the BDP 581/591 dye. It has a long fluorescence lifetime and can be used for fluorescence polarization assays. The maleimide group can react with thiol groups to form thioester bonds between pH 6.5 to 7.5, for the labeling of sulfhydryl groups of proteins and peptides.

HY-P10533

Cysteine peptide	Biochemical Assay Reagents	Others
Cysteine peptide is a heptapeptide containing a cysteine residue whose thiol group makes it susceptible to a range of oxidative modifications. Cysteine peptide is used to detect the skin sensitization potential of chemicals including cosmetic ingredients .

HY-W441004

DSPE-Thiol	Liposome	Others
DSPE-Thiol is a phophalipid capped with thiol group. The thiol capped head can selectively react with maleimide. DSPE-Thiol can also be used for the preparation of phospholipid dimers .

HY-116427

Propargyl-PEG4-thiol	ADC Linker PROTAC Linkers	Cancer
Propargyl-PEG4-thiol is a PEG-based PROTAC linker can be used in the synthesis of PROTACs. Propargyl-PEG4-thiol is a non-cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs) . Propargyl-PEG4-thiol is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.

HY-W395122

Mal-PEG1-PNP-carbonate	Biochemical Assay Reagents	Others
Mal-PEG1-PNP-carbonate is a amine-reactive compound. PNP is a good leaving group. The maleimide group will react with a thiol group to form a covalent bond, enabling the connection of biomolecule with a thiol.

HY-W800648

Mal-PEG2-amide	Biochemical Assay Reagents	Others
Mal-PEG2-Amide is a PEG linker with a maleimide group which can react with a thiol group to form a covalent bond, enabling the connection of biomolecule with a thiol.

HY-W591975

Alkyne maleimide	Biochemical Assay Reagents	Others
Alkyne maleimide is a bifunctional linker reagent with a terminal malimide group and a propargyl group. The maleimide group will react with a thiol group to form a covalent bond, enabling the connection of biomolecule with a thiol. The propargyl group can be linked to azide-containing biomolecules via Click Chemistry.

HY-138525

Azido-PEG4-Thiol	PROTAC Linkers	Cancer
Azido-PEG4-Thiol is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs . Azido-PEG4-Thiol is a click chemistry reagent, it contains an Azide group and can undergo copper-catalyzed azide-alkyne cycloaddition reaction (CuAAc) with molecules containing Alkyne groups. It can also undergo strain-promoted alkyne-azide cycloaddition (SPAAC) reactions with molecules containing DBCO or BCN groups.

HY-162159

Ac-Cys-NHMe	Others	Others
Ac-Cys-NHMe is a Cys dipeptide with thiol group .

HY-D1364

Pyrene maleimide	Biochemical Assay Reagents	Others
Pyrene maleimide is a polyaromatic fluorescent hydrocarbon with a termininal maleimide group. The maleimide group will react with a thiol group to form a covalent bond.

HY-136130

N,N-Bis(PEG2-alkyne)-N-amido-PEG2-thiol	ADC Linker	Cancer
N,N-Bis(PEG2-alkyne)-N-amido-PEG2-thiol is a cleavable 4 unit PEG ADC linker used in the synthesis of antibody-drug conjugates (ADCs) . N,N-Bis(PEG2-alkyne)-N-amido-PEG2-thiol is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.

HY-W190922

Mal-PEG4-amine	Biochemical Assay Reagents	Others
Mal-PEG4-amine is a PEG linker containing a maleimide group and an amine group. The hydrophilic PEG spacer increases solubility in aqueous media. The amine group is reactive with carboxylic acids, activated NHS esters, carbonyls (ketone, aldehyde) etc. The maleimide group will react with a thiol group to form a covalent bond, enabling the connection of biomolecule with a thiol.

HY-W800654

Mal-PEG5-amine	Biochemical Assay Reagents	Others
Mal-PEG5-amine is a PEG linker containing a maleimide group and an amine group. The hydrophilic PEG spacer increases solubility in aqueous media. The amine group is reactive with carboxylic acids, activated NHS esters, carbonyls (ketone, aldehyde) etc. The maleimide group will react with a thiol group to form a covalent bond, enabling the connection of biomolecule with a thiol.

HY-172505

Mal-PEG12-t-butyl ester	Biochemical Assay Reagents	Others
Mal-PEG12-t-butyl ester is a PEG linker containing a maleimide group and a t-butyl ester group. The hydrophilic PEG spacer increases solubility in aqueous media. The t-butyl protected carboxyl group can be deprotected under acidic conditions. The maleimide group will react with a thiol group to form a covalent bond, enabling the connection of biomolecule with a thiol.

HY-135133

S-Phenylsulfonylcysteine	Biochemical Assay Reagents	Others
S-Phenylsulfonylcysteine is a reagent for blocking thiol (-SH) groups on proteins and peptides .

HY-134428

Arachidonoyl coenzyme A lithium	Endogenous Metabolite	Metabolic Disease
Arachidonoyl coenzyme A lithium is an unsaturated fatty acyl coenzyme A, formed by the condensation of the thiol group of coenzyme A with the carboxyl group of arachidonic acid .

HY-W590555

Thiol-PEG-DMG, MW 2000	Liposome	Cancer
Thiol-PEG-DMG, MW 2000 is a phospholipid polyPEG which can be used to prepare liposomes or nanoparticles. The terminal thiol group reacts with maleimide, OPSS, vinylsulfone and transition metal surfaces including gold, silver, etc.

HY-136129

N,N-Bis(PEG2-N3)-N-amido-PEG2-thiol	ADC Linker	Cancer
N,N-Bis(PEG2-N3)-N-amido-PEG2-thiol is a cleavable 4 unit PEG ADC linker used in the synthesis of antibody-drug conjugates (ADCs) . N,N-Bis(PEG2-N3)-N-amido-PEG2-thiol is a click chemistry reagent, it contains an Azide group and can undergo copper-catalyzed azide-alkyne cycloaddition reaction (CuAAc) with molecules containing Alkyne groups. It can also undergo strain-promoted alkyne-azide cycloaddition (SPAAC) reactions with molecules containing DBCO or BCN groups.

HY-15915

DTNB Maximum Cited Publications 6 Publications Verification Ellman’s Reagent	Biochemical Assay Reagents	Others
DTNB (Ellman’s Reagent) is a chemical used to quantify the number or concentration of thiol groups .

HY-W800722

N-(PEG1-acid)-L-Lysine-amido-Mal	Biochemical Assay Reagents	Others
N-(PEG1-acid)-L-Lysine-amido-Mal is a PEG based linker with terminal malimide and carboxylic acid groups. The hydrophilic PEG spacer increases solubility in aqueous media. The maleimide group will react with a thiol group to form a covalent bond, enabling the connection of biomolecule with a thiol. The terminal carboxylic acid can react with primary amine groups in the presence of activators (e.g. EDC, or HATU) to form a stable amide bond.

HY-W591479

MC-val-ala-nhs ester	ADC Linker	Cancer
MC-Val-Ala-NHS ester is a cleavable ADC linker with a malimide group and an NHS ester group. The Val-Ala linkers can be cleaved by Cathepsin B. Maleimide group is reactive toward thiol groups. MC is reactive with thiol moieties. The NHS ester is able to react specifically and efficiently with amines (e.g. the side chain of lysine residues or aminosilane-coated surfaces) at neutral or slightly basic condition to form a covalent bond.

HY-W800670

Mal-amido-PEG5-alkyne	Biochemical Assay Reagents	Others
Mal-amido-PEG5-alkyne is a PEG linker containing a maleimide group and an alkyne. The hydrophilic PEG spacer increases solubility in aqueous media. The alkyne group can react with azide-bearing compounds or biomolecules via copper catalyzed azide-alkyne Click Chemistry to yield a stable triazole linkage. The maleimide group will react with a thiol group to form a covalent bond, enabling the connection of biomolecule with a thiol.

HY-W736950A

H-L-Cys(MDNPE)-OH hydrochloride	Amino Acid Derivatives	Others
H-L-Cys(MDNPE)-OH hydrochloride is a cysteine derivative with a short peptide sequence attached to the thiol group of cysteine.

HY-D0042

NBD-Cl 1 Publications Verification NBD chloride	Fluorescent Dye	Others
NBD-Cl is a nonfluorescent reagent which becomes highly fluorescent after reaction with thiol or amino groups .

HY-W800787

18:1 PE MCC	Liposome	Cancer
18:1 PE MCC is a maleimide-functionalized thiol-reactive lipid with a phosphoethanolamine linked to two oleic acid tails and a maleimide group.

HY-W800786

16:0 PE MCC N-MCC-PE	Liposome	Cancer
16:0 PE MCC is a maleimide-functionalized thiol-reactive lipid with a phosphoethanolamine linked to two palmitic acid tails and a maleimide group.

HY-D2498

Cy7 maleimide	Fluorescent Dye	Others
Cy7 maleimide is a fluorescent dye containing a Maleimide (HY-W007324) functional group. Maleimide can be used to label thiol groups on antibodies, proteins and peptides .

HY-W800789

16:0 MPB PE	Liposome	Cancer
16:0 MPB PE is a maleimide-functionalized thiol-reactive lipid with a phosphoethanolamine linked to two palmitic acid tails and a phenyl maleimide group.

HY-W800788

18:1 MPB PE	Liposome	Cancer
18:1 MPB PE is a maleimide-functionalized thiol-reactive lipid with a phosphoethanolamine linked to two oleic acid tails and a phenyl maleimide group.

HY-D2091

PE-VF647 Maleimide	Fluorescent Dye	Others
PE-VF647 Maleimide is a double-dye dye that can undergo thiol reaction. It contains maleimide groups that can react with thiol groups to form covalent bonds. PE-VF647 Maleimide contains two dyes, PE and VF, with excitation wavelengths (Ex) of 495 nm and 566 nm, respectively. PE-VF594 Maleimide has an emission wavelength (Em) of 665 nm.

HY-D1363

BDP R6G maleimide	Fluorescent Dye	Others
BDP R6G maleimide is a borodipyrromethane fluorophore with absorption and emission wavelengths similar to those of R6G rhodamine. Sulfhydryl labelling is a common protein modification where the cysteine residues in the protein allow more site-specific labelling than the NHS ester of the amine group. BDP R6G maleimide is a thiol reactive dye that reacts with thiol groups to form thioester bonds .

HY-D2488

Sulfo Cy5.5-maleimide	Fluorescent Dye	Others
Sulfo Cy5.5-maleimide is a fluorescent dye containing a Maleimide (HY-W007324) functional group. Maleimide can be used to label thiol groups on antibodies, proteins and peptides.

HY-D2093

PE-VF750 Maleimide	Fluorescent Dye	Others
PE-VF750 Maleimide is a thiol-reactive double-dye dye that contains maleimide groups that can react with thiol groups to form covalent bonds. Ex/Em=495-566/777 nm. PE-VF750 Maleimide contains two dyes, PE and VF, with excitation wavelengths (Ex) of 495 nm and 566 nm, respectively. PE-VF594 Maleimide has an emission wavelength (Em) of 777 nm.

HY-W800828

Iodoacetamido-PEG3-NHS ester	Biochemical Assay Reagents	Others
Iodoacetamido-PEG3-NHS ester is a PEG reagent containing an Iodoacetamide group and a Boc-protected amino group. The iodoacetamide group is an alkylating agent that can be used to bind covalently with the thiol group. The Boc group can be deprotected under mild acidic conditions to form the free amine.

HY-136386

N-Acetyl-D-cysteine 2 Publications Verification	Reactive Oxygen Species	Others
N-Acetyl-D-cysteine has antioxidant activities and scavenges ROS through the reaction with its thiol group, but cannot enter the glutathione metabolic pathway .

HY-130080

DM3 Maytansinoid DM3	ADC Cytotoxin Microtubule/Tubulin	Cancer
DM3 (Maytansinoid DM3) is a maytansine analog bearing disulfide or thiol groups and a tubulin inhibitor, and is a cytotoxic moiety of antibody-drug conjugates (ADCs) .

HY-W800682

Bis-sulfone-PEG4-acid	Biochemical Assay Reagents	Others
Bis-Sulfone-PEG4-acid is a reagent with a sulfone and an acid. The sulfone group can be conjugated with thiol groups of proteins. The terminal acid reacts with primary amines with the help of activators (EDC or HATU) to from stable amide bonds.

HY-E70264

16:0 Coenzyme A triammonium	Endogenous Metabolite	Metabolic Disease
16:0 Coenzyme A triammonium is palmitoyl-CoA, which can serve as a reaction substrate to transfer the palmitoyl group to the free thiol group of the target protein through palmitoylation catalyzed by protein acyl transferases (PATs) .

HY-D2092

PE-VF680 Maleimide	Fluorescent Dye	Others
PE-VF680 Maleimide is a double-dye dye that can undergo thiol reaction. It contains maleimide groups that can react with thiol groups to form covalent bonds. Ex/Em=495-566/701 nm. PE-VF680 Maleimide contains two dyes, PE and VF, with excitation wavelengths (Ex) of 495 nm and 566 nm, respectively. PE-VF594 Maleimide has an emission wavelength (Em) of 701 nm.

HY-W441003

DSPE-PEG-IA (MW 2000)	Biochemical Assay Reagents	Others
DSPE-PEG-IA, MW 2000 is a thiol reactive phospholipid polyPEG. The iodoacetyll group is reactive with thiol to produce a thioether linkage. The polymer can self-assemble in water to form lipid bilayer and can be used to encapsulate drugs in targeted delivery application, such as liposomal doxorubicin as an anti cancer drug or mRNA vaccine. Reagent grade, for research use only.

HY-W615173

NHS ester-C2-NHCO-C2-NHS	Biochemical Assay Reagents	Others
NHS ester-C2-NHCO-C2-NHS is a heterobifunctional PEG linker, featuring a terminal NHS ester that can be used to label amine compounds and maleimide group for reactions with thiol groups.

HY-118112

4-N-Maleimidobenzoicacid-NHS	Biochemical Assay Reagents	Others
4-N-Maleimidobenzoicacid-NHS is a PEG linker that finds utility in bioconjugation endeavors and protein labeling ventures. Specifically designed for selective reaction with thiol groups, the maleimide group establishes covalent linkages, thereby facilitating the coupling of proteins, peptides, or diverse molecules to thiol-bearing biomolecules. The NHS ester is able to react specifically and efficiently with primary amines (e.g. the side chain of lysine residues or aminosilane-coated surfaces) at neutral or slightly basic conditions to form a covalent bond.

HY-W800817

TCO-PEG4-maleimide	Biochemical Assay Reagents	Others
TCO-PEG4-maleimide is a click chemistry building block containing a TCO moiety and a maleimide group. The maleimide group will react with a thiol group to form a covalent bond. TCO moiety is very reactive with tetrazine (3rd generation click chemistry).

HY-135233

N-Succinimidyl-S-acetylthioacetate SATA	Biochemical Assay Reagents	Others
N-Succinimidyl S-acetylthioacetate (SATA), a protein modification agent, introduces thiol-groups into protein molecules. N-Succinimidyl S-acetylthioacetate adds sulfhydryl groups to proteins and other amine-containing molecules in a protected form .

HY-W585396

BDP TR maleimide	Fluorescent Dye	Others
BDP TR maleimide is a linker of BDP TR dye which is commonly used for microscopy and fluorescence polarization assays. The maleimide group can react with thiol groups to form thioester bonds between pH 6.5 to 7.5.

Cat. No.	Product Name	Type

HY-D1390A

Sulfo-Cy5-Mal	Fluorescent Dyes/Probes
Sulfo-Cy5-Mal is a fluorescent dye with the form of active ester that reacts with thiol groups in proteins to form stable conjugates. Sulfo-Cy5-Mal that can be used to label protein .

HY-D0042

NBD-Cl 1 Publications Verification NBD chloride	Dyes
NBD-Cl is a nonfluorescent reagent which becomes highly fluorescent after reaction with thiol or amino groups .

HY-D1526

N-(4-Anilino-1-naphthyl)maleimide	Fluorescent Dyes/Probes
N-(4-Anilino-1-naphthyl)maleimide is a fluorescent probe that can be used to detect thiol groups in proteins. N-(4-Anilino-1-naphthyl)maleimide reacts with thiol groups and immediately produces a stable fluorescent compound with the λ_ex=355 nm, λ_em=448 nm .

HY-D1654

BDP 581/591 maleimide	Fluorescent Dyes/Probes
BDP 581/591 maleimide is a linker of the BDP 581/591 dye. It has a long fluorescence lifetime and can be used for fluorescence polarization assays. The maleimide group can react with thiol groups to form thioester bonds between pH 6.5 to 7.5, for the labeling of sulfhydryl groups of proteins and peptides.

HY-D2498

Cy7 maleimide	Fluorescent Dyes/Probes
Cy7 maleimide is a fluorescent dye containing a Maleimide (HY-W007324) functional group. Maleimide can be used to label thiol groups on antibodies, proteins and peptides .

HY-D2091

PE-VF647 Maleimide	Protein Labeling
PE-VF647 Maleimide is a double-dye dye that can undergo thiol reaction. It contains maleimide groups that can react with thiol groups to form covalent bonds. PE-VF647 Maleimide contains two dyes, PE and VF, with excitation wavelengths (Ex) of 495 nm and 566 nm, respectively. PE-VF594 Maleimide has an emission wavelength (Em) of 665 nm.

HY-D1363

BDP R6G maleimide

Fluorescent Dyes/Probes

BDP R6G maleimide is a borodipyrromethane fluorophore with absorption and emission wavelengths similar to those of R6G rhodamine. Sulfhydryl labelling is a common protein modification where the cysteine residues in the protein allow more site-specific labelling than the NHS ester of the amine group. BDP R6G maleimide is a thiol reactive dye that reacts with thiol groups to form thioester bonds .

HY-D2488

Sulfo Cy5.5-maleimide	Fluorescent Dyes/Probes
Sulfo Cy5.5-maleimide is a fluorescent dye containing a Maleimide (HY-W007324) functional group. Maleimide can be used to label thiol groups on antibodies, proteins and peptides.

HY-D2093

PE-VF750 Maleimide	Protein Labeling
PE-VF750 Maleimide is a thiol-reactive double-dye dye that contains maleimide groups that can react with thiol groups to form covalent bonds. Ex/Em=495-566/777 nm. PE-VF750 Maleimide contains two dyes, PE and VF, with excitation wavelengths (Ex) of 495 nm and 566 nm, respectively. PE-VF594 Maleimide has an emission wavelength (Em) of 777 nm.

HY-D2092

PE-VF680 Maleimide	Protein Labeling
PE-VF680 Maleimide is a double-dye dye that can undergo thiol reaction. It contains maleimide groups that can react with thiol groups to form covalent bonds. Ex/Em=495-566/701 nm. PE-VF680 Maleimide contains two dyes, PE and VF, with excitation wavelengths (Ex) of 495 nm and 566 nm, respectively. PE-VF594 Maleimide has an emission wavelength (Em) of 701 nm.

HY-W585396

BDP TR maleimide	Fluorescent Dyes/Probes
BDP TR maleimide is a linker of BDP TR dye which is commonly used for microscopy and fluorescence polarization assays. The maleimide group can react with thiol groups to form thioester bonds between pH 6.5 to 7.5.

HY-D2103

TAMRA-PEG3-Maleimide	Fluorescent Dyes/Probes
TAMRA-PEG3-Maleimide is a dye derivative of TAMRA (HY-135640) containing 3 PEG units. TAMRA-PEG3-Maleimide contains maleimide groups that react with thiol groups to form covalent bonds.

HY-D2104

TAMRA-PEG7-Maleimide	Fluorescent Dyes/Probes
TAMRA-PEG7-Maleimide is a dye derivative of TAMRA (HY-135640) containing 7 PEG units. TAMRA-PEG7-Maleimide contains a maleimide group that can react with a thiol group to form a covalent bond.

HY-W190932

TAMRA-PEG2-Maleimide	Fluorescent Dyes/Probes
TAMRA-PEG2-Maleimide is a dye derivative of TAMRA (HY-135640) containing 4 PEG units. TAMRA-PEG2-Maleimide contains a maleimide group that can react with a thiol group to form a covalent bond.

HY-D2448

Cy3-PEG-Thiol	Fluorescent Dyes/Probes
Cy3-PEG-Thiol (Cy3-PEG-SH) is a near infrared fluorescent labeling reagent that combines Cy3 fluorescent dye, polyethylene glycol (PEG) and sulfhydryl (SH) polyethylene glycol derivatives, and is suitable for molecular coupling. Cy3-PEG-Thiol is absorbed at 550nm and has high solubility and end-group substitution rate .

HY-D2497

Sulfo Cy7 bis-SH	Fluorescent Dyes/Probes
Sulfo Cy7 bis-SH is a fluorescent dye that contains sulfonated Cyanine7 (Sulfo-CY7) fluorescent dye and thiol (-SH) functional group. SH is highly reactive and can react with a variety of functional groups (such as maleimide) to form stable thioether bonds .

HY-D2150

AF 430 maleimide	Fluorescent Dyes/Probes
AF 430 maleimide is a derivative of the yellow fluorescent dye AF 430. AF430 has an excitation wavelength of 425 nm and an emission wavelength of 542 nm. AF 430 maleimide contains maleimide groups that react with thiol groups to form covalent bonds. To achieve specific coupling of dye labels and biomolecules .

HY-D2094

PerCP Maleimide	Protein Labeling
PerCP Maleimide is a fluorescent dye that reacts with free sulfhydryl groups on proteins. PerCP is a red fluorescence albuminous dye for immunostaining and Maleimide can be leveraged for the preparation of fluorogenic probe, which is mainly used for the specific detection of thiol analytes .

HY-D2763

BP Fluor 532 maleimide

Fluorescent Dyes/Probes

BP Fluor 532 maleimide is a photostable, bright yellow-fluorescent dye with pH insensitive emission from pH 4 to pH 10. The excitation of BP Fluor 532 is ideally suited for the frequency-doubled Nd:YAG laser line. BP Fluor 532 dye can be conjugated to a variety of antibodies, peptides, proteins, tracers, and amplification substrates, and is often used for the generation of stable signals in imaging and flow cytometry. Maleimide is the most popular sulfhydryl-reactive group for conjugating the dye to a thiol group on a protein, oligonucleotide thiophosphate, or low molecular weight ligand. The maleimide group specifically and efficiently reacts with reduced thiols (sulfhydryl groups, –SH) at pH 6.5 to 7.5 to form a stable thioether bond. The resulting conjugates exhibit brighter fluorescence and greater photostability than the conjugates of many other spectrally similar fluorophores.

HY-D1260

FM-red PSH-red	Fluorescent Dyes/Probes
FM-red (PSH-red) is a red-emitting and environment-sensitive probe for selectively detecting and labeling protein thiols. FM-red can be used to image protein sulfhydryl groups in live cells and in vivo. FM-red also could be used to measure of the redox states of thioredoxin (Trx) .

HY-D2381

AF 488 maleimide	Fluorescent Dyes/Probes
AF 488 maleimide is a thiol-reactive dye for labeling of protein SH groups, and it can be used to attach AF 488 fluorophore to proteins and peptides containing cysteine residues, as well as to other thiolated molecules. AF488 exhibits the λ_em and λ_ex wavelength of 520 nm and 470 nm, respectively .

HY-D1871

Cy3 maleimide chloride

Fluorescent Dyes/Probes

Cy3 maleimide chloride is a dye derivative of Cyanine 3 (Cy3) (HY-D0822) containing maleimide functional groups. Cy3 is a fluorescent dye with a fluorescence spectrum typically in the green to orange wavelength range. The alkyne functional group of Cy3 maleimide chloride can undergo a "thiol-acrylamide" reaction with molecules containing sulfur-oxygen functional groups to form covalent bonds. Cy3 maleimide chloride can bind to biological molecules such as proteins and antibodies to track their location and dynamic changes in biological samples.

HY-D1404

5MP-Propargyl

Protein Labeling

5MP-Propargyl is the derivative of 5-Methylene pyrrolone (5MP). 5-Methylene pyrrolones (5MPs) are thiol-specific, reversible bioconjugation reagents for cysteine-specific protein modification, that are commonly used for protein bioconjugation . 5MP-Propargyl is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.

HY-D1407

Br-5MP-Propargyl

Protein Labeling

Br-5MP-Propargyl is the derivative of 5-Methylene pyrrolone (5MP). 5-Methylene pyrrolones (5MPs) are thiol-specific, reversible bioconjugation reagents for cysteine-specific protein modification, that are commonly used for protein bioconjugation . Br-5MP-Propargyl is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.

HY-172721

Cy3B maleimide

Fluorescent Dyes/Probes

Cy3B maleimide is a mono-reactive dye containing maleimide group, which can selectively and efficiently attach Cyanine3 fluorophore (an analog of Cy3) to proteins and peptides containing cysteine residues, as well as to other thiolated molecules (such as thiol-containing oligonucleotides). Cy3B is an improved version of Cy3 dyes with significantly increased fluorescence quantum yield and photostability.

HY-15941

5(6)-FITC

2 Publications Verification

Fluorescein 5(6)-isothiocyanate; Fluorescein isothiocyanate 5- and 6- isomers

Fluorescent Dyes/Probes

5(6)-FITC (Fluorescein 5(6)-isothiocyanate) is an amine-reactive derivative of a fluorescent dye, characterized by high absorbance and excellent fluorescence quantum yield. The isothiocyanate group of FITC can react with various functional groups on proteins, including amines, thiols, imidazoles, tyrosines and carbonyls, enabling the labeling of proteins such as antibodies and lectins. 5(6)-FITC has a wide range of applications, including flow cytometry, immunofluorescence, protease assays and conjugation. The maximum excitation/emission wavelengths are 492/518 nm .

HY-D2510

Cy3-PEG-SH (MW 2000)	Fluorescent Dyes/Probes
Cy3-PEG-SH (MW 2000) (Cy3-PEG-Thiol) is a near infrared fluorescent labeling reagent that combines Cy3 fluorescent dye, polyethylene glycol (PEG) and sulfhydryl (SH) polyethylene glycol derivatives, and is suitable for molecular coupling. Cy3-PEG-SH (MW 2000) is absorbed at 550nm and has high solubility and end-group substitution rate .

HY-D2513

Cy3-PEG-SH (MW 10000)	Fluorescent Dyes/Probes
Cy3-PEG-SH (MW 10000) (Cy3-PEG-Thiol) is a near infrared fluorescent labeling reagent that combines Cy3 fluorescent dye, polyethylene glycol (PEG) and sulfhydryl (SH) polyethylene glycol derivatives, and is suitable for molecular coupling. Cy3-PEG-SH (MW 10000) is absorbed at 550nm and has high solubility and end-group substitution rate .

HY-D2511

Cy3-PEG-SH (MW 3400)	Fluorescent Dyes/Probes
Cy3-PEG-SH (MW 3400) (Cy3-PEG-Thiol) is a near infrared fluorescent labeling reagent that combines Cy3 fluorescent dye, polyethylene glycol (PEG) and sulfhydryl (SH) polyethylene glycol derivatives, and is suitable for molecular coupling. Cy3-PEG-SH (MW 3400) is absorbed at 550nm and has high solubility and end-group substitution rate .

Cat. No.	Product Name	Type

HY-15915

DTNB 5+ Cited Publications Ellman’s Reagent	Indicators
DTNB (Ellman’s Reagent) is a chemical used to quantify the number or concentration of thiol groups .

HY-135233

N-Succinimidyl-S-acetylthioacetate SATA	Biochemical Assay Reagents
N-Succinimidyl S-acetylthioacetate (SATA), a protein modification agent, introduces thiol-groups into protein molecules. N-Succinimidyl S-acetylthioacetate adds sulfhydryl groups to proteins and other amine-containing molecules in a protected form .

HY-W020780C

mPEG-Mal (MW 3400) mPEG-Maleimide (MW 3400)	Drug Delivery
mPEG-Mal (MW 3400) is a PEG derivative used for thiol pegylation of protein molecules. Its maleimide group (-Mal) degrades in aqueous media and finds application in drug delivery studies.

HY-W441004

DSPE-Thiol	Drug Delivery
DSPE-Thiol is a phophalipid capped with thiol group. The thiol capped head can selectively react with maleimide. DSPE-Thiol can also be used for the preparation of phospholipid dimers .

HY-134428

Arachidonoyl coenzyme A lithium	Enzyme Substrates
Arachidonoyl coenzyme A lithium is an unsaturated fatty acyl coenzyme A, formed by the condensation of the thiol group of coenzyme A with the carboxyl group of arachidonic acid .

HY-W441003

DSPE-PEG-IA (MW 2000)	Drug Delivery
DSPE-PEG-IA, MW 2000 is a thiol reactive phospholipid polyPEG. The iodoacetyll group is reactive with thiol to produce a thioether linkage. The polymer can self-assemble in water to form lipid bilayer and can be used to encapsulate drugs in targeted delivery application, such as liposomal doxorubicin as an anti cancer drug or mRNA vaccine. Reagent grade, for research use only.

HY-W020780A

mPEG-Mal (MW 350) mPEG-Maleimide (MW 350)	Drug Delivery
mPEG-Mal (MW 350) is a PEG derivative used for thiol PEGylation of protein molecules. Its maleimide group (-Mal) degrades in aqueous media and finds application in drug delivery studies.

HY-W020780B

mPEG-Mal (MW 750) mPEG-Maleimide (MW 750)	Drug Delivery
mPEG-Mal (MW 750) is a PEG derivative used for thiol pegylation of protein molecules. Its maleimide group (-Mal) degrades in aqueous media and finds application in drug delivery studies.

HY-168938

Poly(ethylene glycol) methyl ether maleimide (Mn 2000)	Drug Delivery
Poly(ethylene glycol) methyl ether maleimide (Mn 2000) is a polyethylene glycol containing Maleimide (HY-W007324). Due to the Maleimide functional group, Poly(ethylene glycol) methyl ether maleimide (Mn 2000) can be used to conjugate biomolecules containing thiol groups.

HY-155901

Mal-NH-PEG-NH2 TFA (MW 2000) Maleimide-NH-PEG-amine TFA (MW 2000)	Drug Delivery
Mal-NH-PEG-NH2 (TFA) (MW 2000) is a PEG derivative that may be used for thiol PEGylation of protein molecules. Its maleimide group (-Mal) degrades in aqueous media and finds application in drug delivery studies.

HY-W440896

DSPE-PEG-SH, MW 2000	Drug Delivery
DSPE-PEG-SH, MW 2000 is a pegylated phospholipid with thiol group which is reactive with maleimide to form a covalent thioether linkage. The amphiphatic polymer can form lipid bilayer in aqueous solution and be used to encapsulate agents for drug delivery system, such as mRNA vaccine.

HY-157920

Biotin-PE-maleimide N-Biotinyl-N'-[2-(N-maleimido)ethyl]piperazine	Biochemical Assay Reagents
Biotin-PE-maleimide (N-Biotinyl-N'-[2-(N-maleimido)ethyl]piperazine) is a bulky, membrane-impermeable, sulfhydryl-containing reagent with a relatively large molecular size. Biotin-PE-maleimide can be used for biotin labeling (such as thiol groups) and detection of proteins or other biomolecules .

HY-W440902

DSPE-PEG-IA (MW 3400)

Drug Delivery

DSPE-PEG-IA, MW 3400 is an iodoacetyll PEG lipid. The polymer can form lipid bilayer or micelles spontaneoulsy in water. The lipophilic tails can be used to encapsulate hydrophobic therapeutic agents while the hydrophilic head can be used to encapuslate hydrophilic drugs/nutrient, such as antibody, mRNA/DNA. The iodoacetyl group is reactive with thiol to produce a thioether linkage. Reagent grade, for research use only.

Cat. No.	Product Name	Target	Research Area

HY-P10533

Cysteine peptide	Biochemical Assay Reagents	Others
Cysteine peptide is a heptapeptide containing a cysteine residue whose thiol group makes it susceptible to a range of oxidative modifications. Cysteine peptide is used to detect the skin sensitization potential of chemicals including cosmetic ingredients .

Cat. No.	Product Name	Category	Target	Chemical Structure

HY-136386R

N-Acetyl-D-cysteine (Standard)	Microorganisms Source classification	Reactive Oxygen Species
N-Acetyl-D-cysteine (Standard) is the analytical standard of N-Acetyl-D-cysteine. This product is intended for research and analytical applications. N-Acetyl-D-cysteine has antioxidant activities and scavenges ROS through the reaction with its thiol group, but cannot enter the glutathione metabolic pathway .

Cat. No.	Product Name		Classification

HY-116427

Propargyl-PEG4-thiol		PROTAC Synthesis Alkynes ADC Synthesis
Propargyl-PEG4-thiol is a PEG-based PROTAC linker can be used in the synthesis of PROTACs. Propargyl-PEG4-thiol is a non-cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs) . Propargyl-PEG4-thiol is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.

HY-138525

Azido-PEG4-Thiol		PROTAC Synthesis Azide
Azido-PEG4-Thiol is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs . Azido-PEG4-Thiol is a click chemistry reagent, it contains an Azide group and can undergo copper-catalyzed azide-alkyne cycloaddition reaction (CuAAc) with molecules containing Alkyne groups. It can also undergo strain-promoted alkyne-azide cycloaddition (SPAAC) reactions with molecules containing DBCO or BCN groups.

HY-136130

N,N-Bis(PEG2-alkyne)-N-amido-PEG2-thiol		Alkynes ADC Synthesis
N,N-Bis(PEG2-alkyne)-N-amido-PEG2-thiol is a cleavable 4 unit PEG ADC linker used in the synthesis of antibody-drug conjugates (ADCs) . N,N-Bis(PEG2-alkyne)-N-amido-PEG2-thiol is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.

HY-136129

N,N-Bis(PEG2-N3)-N-amido-PEG2-thiol		ADC Synthesis Azide
N,N-Bis(PEG2-N3)-N-amido-PEG2-thiol is a cleavable 4 unit PEG ADC linker used in the synthesis of antibody-drug conjugates (ADCs) . N,N-Bis(PEG2-N3)-N-amido-PEG2-thiol is a click chemistry reagent, it contains an Azide group and can undergo copper-catalyzed azide-alkyne cycloaddition reaction (CuAAc) with molecules containing Alkyne groups. It can also undergo strain-promoted alkyne-azide cycloaddition (SPAAC) reactions with molecules containing DBCO or BCN groups.

HY-156391A

(R)-TCO4-PEG2-Maleimide		TCO
TCO4-PEG2-Maleimide is a PROTAC linker and belongs to the PEG class. TCO4-PEG2-Maleimide contains TCO and Maleimide groups, which can undergo specific "click" reactions with tetrazine groups or thiol groups, or "mercapto-acrylamide" reactions.

HY-156391

TCO4-PEG2-Maleimide		TCO
TCO4-PEG2-Maleimide is a PROTAC linker and belongs to the PEG class. TCO4-PEG2-Maleimide contains TCO and Maleimide groups, which can undergo specific "click" reactions with tetrazine groups or thiol groups, or "mercapto-acrylamide" reactions.

HY-156392

TCO4-PEG7-Maleimide		TCO
TCO4-PEG7-Maleimide is a PROTAC linker and belongs to the PEG class. TCO4-PEG7-Maleimide contains TCO and Maleimide groups, which can undergo specific "click" reactions with tetrazine groups or thiol groups, or "mercapto-acrylamide" reactions.

HY-W872575A

(R)-TCO4-PEG3-Maleimide		TCO
TCO4-PEG3-Maleimide is a PROTAC linker and belongs to the PEG class. TCO4-PEG3-Maleimide contains TCO and Maleimide groups, which can undergo specific "click" reactions with tetrazine groups or thiol groups, or "mercapto-acrylamide" reactions.

HY-W872575

TCO4-PEG3-Maleimide		TCO
TCO4-PEG3-Maleimide is a PROTAC linker and belongs to the PEG class. TCO4-PEG3-Maleimide contains TCO and Maleimide groups, which can undergo specific "click" reactions with tetrazine groups or thiol groups, or "mercapto-acrylamide" reactions.

HY-W591360

Iodoacetamido-PEG6-azide		Azide
Iodoacetamido-PEG6-azide is an aqueous soluble PEG linker containing an azide and a terminal Iodoacetamido group. The azide group can react with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. The Iodoacetamido moiety is commonly used to bind covalently with the thiol group of cysteine so the protein cannot form disulfide bonds.

HY-W879048

DBCO-PEG24-Maleimide		DBCO
DBCO-PEG24-Maleimide contains a maleimide and a DBCO group. DBCO-PEG24-Maleimide can be used for thiol-containing biomolecule conjugations. DBCO-PEG24-Maleimide can be used in click chemistry with azide-bearing biomolecules .

HY-D1404

5MP-Propargyl		Alkynes
5MP-Propargyl is the derivative of 5-Methylene pyrrolone (5MP). 5-Methylene pyrrolones (5MPs) are thiol-specific, reversible bioconjugation reagents for cysteine-specific protein modification, that are commonly used for protein bioconjugation . 5MP-Propargyl is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.

HY-D1407

Br-5MP-Propargyl		Alkynes
Br-5MP-Propargyl is the derivative of 5-Methylene pyrrolone (5MP). 5-Methylene pyrrolones (5MPs) are thiol-specific, reversible bioconjugation reagents for cysteine-specific protein modification, that are commonly used for protein bioconjugation . Br-5MP-Propargyl is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.

Cat. No.	Product Name		Classification

HY-W020780C

mPEG-Mal (MW 3400) mPEG-Maleimide (MW 3400)		Polymers
mPEG-Mal (MW 3400) is a PEG derivative used for thiol pegylation of protein molecules. Its maleimide group (-Mal) degrades in aqueous media and finds application in drug delivery studies.

HY-W800805

DOPE-Mal		Phospholipids
DOPE-Mal is a synthetic analog of naturally-occurring PE containing 18:1 fatty acids at the sn-1 and sn-2 positions with a terminal maliemide group. The maleimide group will react with a thiol group to form a covalent bond. The hydrophilic PEG spacer increases solubility in aqueous media.

HY-W441004

DSPE-Thiol		Phospholipids
DSPE-Thiol is a phophalipid capped with thiol group. The thiol capped head can selectively react with maleimide. DSPE-Thiol can also be used for the preparation of phospholipid dimers .

HY-W590555

Thiol-PEG-DMG, MW 2000		Pegylated Lipids
Thiol-PEG-DMG, MW 2000 is a phospholipid polyPEG which can be used to prepare liposomes or nanoparticles. The terminal thiol group reacts with maleimide, OPSS, vinylsulfone and transition metal surfaces including gold, silver, etc.

HY-W800787

18:1 PE MCC		Phospholipids
18:1 PE MCC is a maleimide-functionalized thiol-reactive lipid with a phosphoethanolamine linked to two oleic acid tails and a maleimide group.

HY-W800786

16:0 PE MCC N-MCC-PE		Phospholipids
16:0 PE MCC is a maleimide-functionalized thiol-reactive lipid with a phosphoethanolamine linked to two palmitic acid tails and a maleimide group.

HY-W800789

16:0 MPB PE		Phospholipids
16:0 MPB PE is a maleimide-functionalized thiol-reactive lipid with a phosphoethanolamine linked to two palmitic acid tails and a phenyl maleimide group.

HY-W800788

18:1 MPB PE		Phospholipids
18:1 MPB PE is a maleimide-functionalized thiol-reactive lipid with a phosphoethanolamine linked to two oleic acid tails and a phenyl maleimide group.

HY-W020780A

mPEG-Mal (MW 350) mPEG-Maleimide (MW 350)		Polymers
mPEG-Mal (MW 350) is a PEG derivative used for thiol PEGylation of protein molecules. Its maleimide group (-Mal) degrades in aqueous media and finds application in drug delivery studies.

HY-W020780B

mPEG-Mal (MW 750) mPEG-Maleimide (MW 750)		Polymers
mPEG-Mal (MW 750) is a PEG derivative used for thiol pegylation of protein molecules. Its maleimide group (-Mal) degrades in aqueous media and finds application in drug delivery studies.

HY-155901

Mal-NH-PEG-NH2 TFA (MW 2000) Maleimide-NH-PEG-amine TFA (MW 2000)		Polymers
Mal-NH-PEG-NH2 (TFA) (MW 2000) is a PEG derivative that may be used for thiol PEGylation of protein molecules. Its maleimide group (-Mal) degrades in aqueous media and finds application in drug delivery studies.

HY-W440896

DSPE-PEG-SH, MW 2000		Pegylated Lipids
DSPE-PEG-SH, MW 2000 is a pegylated phospholipid with thiol group which is reactive with maleimide to form a covalent thioether linkage. The amphiphatic polymer can form lipid bilayer in aqueous solution and be used to encapsulate agents for drug delivery system, such as mRNA vaccine.

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