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Colorimetric

" in MedChemExpress (MCE) Product Catalog:

51

Inhibitors & Agonists

27

Fluorescent Dye

8

Biochemical Assay Reagents

11

Peptides

3

MCE Kits

1

Isotope-Labeled Compounds

Cat. No. Product Name Target Research Areas Chemical Structure
  • HY-77962
    2-Thiobarbituric acid

    		Fluorescent Dye Others
    2-Thiobarbituric acid is a commonly used colorimetric reagent for the detection of malondialdehyde (MDA), a marker of lipid peroxidation. 2-Thiobarbituric acid forms a complex with MDA that can be quantified by colorimetric detection at 532 nm as a measure of lipid peroxidation .
    2-Thiobarbituric acid
  • HY-101263
    2-Thio-PAF

    		Biochemical Assay Reagents Others
    2-Thio-PAF, a synthetic analog of PAF, is used in a colorimetric assay for PAF acetylhydrolases .
    2-Thio-PAF
  • HY-W009694
    3,5-Dinitrosalicylic acid

    		Biochemical Assay Reagents Others
    3,5-Dinitrosalicylic acid the derivative of salicylic acid. 3,5-Dinitrosalicylic acid is used in the α-amylase assay, carbohydrase assay, and for the colorimetric determination of reducing substances .
    3,5-Dinitrosalicylic acid
  • HY-D1599
    Rhodamine 6G hydrazide

    R6GH

    		 Fluorescent Dye Others
    Rhodamine 6G hydrazide (R6GH) is a fluorescent dye. Rhodamine 6G hydrazide can be used in selective colorimetric and fluorescent sensing .
    Rhodamine 6G hydrazide
  • HY-151644
    Fluorescein hydrazide

    		Fluorescent Dye Others
    Fluorescein hydrazide is a colorimetric probe formed by the reaction of dihydrazine adipate with fluorescein isothiocyanate. Fluorescein hydrazide can be used to label aldehyde and ketone groups .
    Fluorescein hydrazide
  • HY-126785
    Suc-AAP-Abu-pNA

    Colorimetric Elastase Substrate

    		 Elastase Others
    Suc-AAP-Abu-pNA (Colorimetric Elastase Substrate) is a specific substrate for pancreatic elastase (Km = 100 μM; Kcat/Km = 35,300 s -1 M -1 for rat pancreatic elastase; Km = 30 μM; Kcat/Km = 351,000 s -1 M -1 for porcine pancreatic elastase). Suc-AAP-Abu-pNA also promotes OPC migration .
    Suc-AAP-Abu-pNA
  • HY-158735
    Thioarginine hydrobromide

    		Biochemical Assay Reagents Others
    Thioarginine hydrobromide is a colorimetric substrate for arginase that can be used in the spectrophotometric assay of arginase .
    Thioarginine hydrobromide
  • HY-121549
    S-NEPC

    4-Nitrophenyl-2S,3S-epoxy-3 phenylpropyl carbonate

    		 Epoxide Hydrolase Others
    S-NEPC (4-Nitrophenyl-2S,3S-epoxy-3 phenylpropyl carbonate) is a colorimetric substrate used to measure epoxide hydrolase activity .
    S-NEPC
  • HY-107864
    Erythrosine B free acid

    Tetraiodofluorescein

    		 Fluorescent Dye Infection
    Erythrosine B free acid is a visibly red dye with colorimetric and fluorescent properties that serves as an important dye for many Gram-positive and -negative bacteria. Erythrosine B free acid can be used for live/dead determination in both colorimetric and fluorescence-based assays for low, medium and high-throughput experimentation .
    Erythrosine B free acid
  • HY-134354
    pNP-ADPr

    ADP-ribose-pNP

    		 Poly(ADP-ribose) Glycohydrolase (PARG) Others
    pNP-ADPr is a colorimetric substrate that used for the first continuous Poly(ADP-ribose) glycohydrolase (PARG) and ADP-ribosyl hydrolase 3 (ARH3) activity assays. pNP-ADPr can be used for the research of poly(ADP-ribose)polymerase (PARP) enzymes .
    pNP-ADPr
  • HY-W009454
    Potassium p-nitrophenyl sulfate

    4-Nitopheyl Sulfate potassium

    		 Fluorescent Dye Others
    p-Nitrophenyl Sulfate Potassium is a chromogenic substrate for arylsulfatase. p-Nitrophenyl Sulfate Potassium is released by arylsulfonase cleavage, and the activity of arylsulfonase can be quantitatively determined by colorimetric detection at 400 nm .
    Potassium p-nitrophenyl sulfate
  • HY-W142631
    4-(Phenylazo)diphenylamine

    		Fluorescent Dye Cancer
    4-(Phenylazo)diphenylamine is an excellent colorimetric indicator for the accurate determination of the concentration for a variety of strong bases, Lewis acids, and hydride reducing agents .
    4-(Phenylazo)diphenylamine
  • HY-D1224
    Chlorophenol red-β-D-galactopyranoside

    		Fluorescent Dye Others
    Chlorophenol red-β-D-galactopyranoside is a long-wavelength dye, which has been widely used for colorimetric assays. Chlorophenol red-β-D-galactopyranoside is also a β-galactosidase substrate commonly used in recombinant yeast oestrogenic assays .
    Chlorophenol red-β-D-galactopyranoside
  • HY-D0943
    Nuclear Fast Red

    Kernechtrot

    		 Fluorescent Dye Others
    Nuclear Fast Red, an anthraquinone dye, is commonly used in conjunction with an excess of aluminum ions as a red nuclear counterstain. Nuclear fast red has been used as a histochemical and colorimetric reagent for calcium . Nuclear fast red as highly sensitive "off/on" fluorescent probe for detecting guanine .
    Nuclear Fast Red
  • HY-136898
    PS-915 dihydrochloride

    		Thrombin Others
    PS-915 dihydrochloride is a peptide substrate used in a colorimetric assay for plasma antithrombin III (ATIII). PS-915 dihydrochloride is highly specific for thrombin. By enzyme hydrolysis, PS-915 dihydrochloride liberates 3-carboxy-4-hydroxyaniline (CHA), which turns blue in color due to the complex formation with added alkaline-pentacyanoammine ferroate .
    PS-915 dihydrochloride
  • HY-121694
    CENTA

    		Others Infection
    CENTA is a colorimetric cephalosporin substrate for β-lactamases. Upon hydrolysis by β-lacatamases, CENTA turns from light yellow to chrome yellow, which can be quantified by colorimetric detection at 405 nm as a measure of β-lactamase activity.
    CENTA
  • HY-15926
    ONPG
    4 Publications Verification

    2-Nitrophenyl β-D-galactopyranoside

    		 Biochemical Assay Reagents Others
    ONPG is a colorimetric and spectrophotometric substrate for detection of β-galactosidase activity.
    ONPG
  • HY-D0108
    Fluorescein dilaurate

    		Fluorescent Dye
    Fluorescein dilaurate is a colorimetric probe formed by the reaction of adipic acid dihydrazide and fluorescein isothiocyanate.
    Fluorescein dilaurate
  • HY-D0107
    Fluorescein dicaproate

    		Fluorescent Dye
    Fluorescein dicaproate is a colorimetric probe formed by the reaction of adipic acid dihydrazide and fluorescein isothiocyanate.
    Fluorescein dicaproate
  • HY-131409
    D-Val-Leu-Lys-pNA dihydrochloride

    D-Val-Leu-Lys-p-itoailide dihydrochloride; D-VLK-pNA dihydrochloride; S 2251 dihydrochloride

    		 Fluorescent Dye Others
    D-Val-Leu-Lys-pNA dihydrochloride (D-VLK-pNA dihydrochloride) is a colorimetric substrate for plasminolytic activity. D-Val-Leu-Lys-pNA dihydrochloride is catalytically bound and hydrolyzed by plasmin to release p-nitroaniline (pNA), which can be detected colorimetrically at 405 nm as a measure of plasminolytic activity .
    D-Val-Leu-Lys-pNA dihydrochloride
  • HY-D0101
    Fluorescein-diphosphat diammonium

    		Fluorescent Dye
    Fluorescein-diphosphat (diammonium) is a colorimetric probe formed by the reaction of adipic acid dihydrazide and fluorescein isothiocyanate.
    Fluorescein-diphosphat diammonium
  • HY-W011911
    L-Leucyl-4-nitroanilide

    		Biochemical Assay Reagents Others
    L-Leucyl-4-nitroanilide is a colorimetric substrate for leucine aminopeptidase assays.
    L-Leucyl-4-nitroanilide
  • HY-D0105
    Fluorescein diacetate 6-isothiocyanate

    		Fluorescent Dye
    Fluorescein diacetate 6-isothiocyanate is a colorimetric probe formed by the reaction of adipic acid dihydrazide and fluorescein isothiocyanate.
    Fluorescein diacetate 6-isothiocyanate
  • HY-D0103
    Fluorescein diacetate 5-maleimide

    		Fluorescent Dye
    Fluorescein diacetate 5-maleimide is a colorimetric probe formed by the reaction of adipic acid dihydrazide and fluorescein isothiocyanate.
    Fluorescein diacetate 5-maleimide
  • HY-P1006
    Ac-DEVD-pNA

    		Caspase Others
    Ac-DEVD-pNA is a colorimetric substrate for caspase-3 (CPP32) and related cysteine proteases.
    Ac-DEVD-pNA
  • HY-D0100
    Fluorescein-diacetate-5-isothiocyanat

    		Fluorescent Dye
    Fluorescein-diacetate-5-isothiocyanat is a colorimetric probe formed by the reaction of adipic acid dihydrazide and fluorescein isothiocyanate.
    Fluorescein-diacetate-5-isothiocyanat
  • HY-137858
    H-Gly-Arg-pNA hydrochloride

    Gly-Arg-4-NA hydrochloride; GR-pNA hydrochloride; GR p-itoailide hydrochloride

    		 Fluorescent Dye Others
    H-Gly-Arg-pNA hydrochloride (GR-pNA hydrochloride) is a colorimetric substrate for thrombin. H-Gly-Arg-pNA is preferentially bound by thrombin and cleaves the Gly-Arg (GR) peptide sequence, releasing p-nitroaniline (pNA) that can be detected colorimetrically at 405 nm. H-Gly-Arg-pNA hydrochloride is used as a fluorescent dye to measure thrombin activity .
    H-Gly-Arg-pNA hydrochloride
  • HY-W011422
    2,6-Dibromo-4-(chloroimino)cyclohexa-2,5-dienone

    NSC 528

    		 Fluorescent Dye Others
    2,6-Dibromo-4-(chloroimino)cyclohexa-2,5-dienone (NSC 528) is a colorimetric dye used for the detection of phenolic compounds. 2,6-Dibromo-4-(chloroimino)cyclohexa-2,5-dienone reacts with phenolic compounds at a pH of about 9.4 to produce an indigo dye. 2,6-Dibromo-4-(chloroimino)cyclohexa-2,5-dienone has been used as a Gibbs reagent for the colorimetric detection of phenolic compounds. 2,6-Dibromo-4-(chloroimino)cyclohexa-2,5-dienone has also been used in a colorimetric reaction for the quantitative colorimetric detection of aflatoxins, turning the colorless aflatoxins green with an absorption band at 673 nm.
    2,6-Dibromo-4-(chloroimino)cyclohexa-2,5-dienone
  • HY-D2329
    Fluorescein-PEG4-NHS ester

    		Fluorescent Dye
    Fluorescein-PEG4-NHS ester is a colorimetric probe formed by the reaction of adipic acid dihydrazide and fluorescein isothiocyanate.
    Fluorescein-PEG4-NHS ester
  • HY-D0073
    2,3-Diaminonaphthalene

    		Fluorescent Dye Others
    2,3 Diaminonaphthalene is a highly selective colorimetric and fluorometric reagent for selenium detection and also used for the fluorometric determination of nitrite.
    2,3-Diaminonaphthalene
  • HY-P10236
    Ac-WEHD-pNA

    		Caspase Others
    Ac-WEHD-pNA is a colorimetric substrate for caspase 1, 4, 5 and 14, which is utilized to measure the caspase activity .
    Ac-WEHD-pNA
  • HY-15909
    BCIP

    BCIP p-toluidine salt; X-phosphate p-toluidine salt

    		 Fluorescent Dye Others
    BCIP(BCIP p-toluidine salt; X-phosphate p-toluidine salt) is an artificial chromogenic substrate used for the sensitive colorimetric detection of alkaline phosphatase activity.
    BCIP
  • HY-15926S
    ONPG-13C

    2-Nitrophenyl β-D-galactopyranoside-13C

    		 Isotope-Labeled Compounds Others
    ONPG- 13C is the 13C labeled ONPG. ONPG is a colorimetric and spectrophotometric substrate for detection of β-galactosidase activit[1][2].
    ONPG-13C
  • HY-D0813
    Zincon sodium

    		Fluorescent Dye Others
    Zincon sodium is an excellent colorimetric reagent for the detection of zinc and copper ions in aqueous solution. Zincon sodium can be used for the determination of zinc, copper, and cobalt ions in metalloproteins .
    Zincon sodium
  • HY-P10001
    Z-IETD-pNA

    Z-Ile-Glu-Thr-Asp-pNA

    		 Caspase Cancer
    Z-IETD-pNA (Z-Ile-Glu-Thr-Asp-pNA) is a colorimetric caspase-8 and granzyme B substrate. Z-IETD-pNA is hydrlyzed by caspase 8 to generate pNA .
    Z-IETD-pNA
  • HY-W106746
    Sodium bismuthate dihydrate, 85%

    Bismuth sodium oxide dihydrate, 85%

    		 Biochemical Assay Reagents Others
    Sodium bismuthate dihydrate, 85% (Bismuth sodium oxide dihydrate, 85%) is a sensitive colorimetric reagent for the determination of monoamines. Sodium bismuthate dihydrate, 85% is a kind of biological materials or organic compounds that are widely used in life science research .
    Sodium bismuthate dihydrate, 85%
  • HY-W094505
    Sodium bismuthate (NaBiO3), 80%

    Bismuth sodium oxide, 80%

    		 Biochemical Assay Reagents Others
    Sodium bismuthate (NaBiO3), 80% (Bismuth sodium oxide, 80%) is a sensitive colorimetric reagent for the determination of monoamines. Sodium bismuthate (NaBiO3), 80% is a kind of biological materials or organic compounds that are widely used in life science research .
    Sodium bismuthate (NaBiO3), 80%
  • HY-125815
    Reactive Blue 4
    1 Publications Verification

    		 Fluorescent Dye Others
    Reactive Blue 4 is an anthraquinone dye, as a single colorimetric chemosensor for sequential determination of multiple analytes with different optical responses in aqueous media. Reactive Blue 4 is phytotoxic, cytotoxic and genotoxic. Reactive Blue 4 .
    Reactive Blue 4
  • HY-W115738
    PAR

    		Biochemical Assay Reagents Others
    PAR is an azo dye widely used as a colorimetric reagent for metal ions. PAR forms stable chelates with different metal ions. PAR can also complex with heavy metal ions in polar organic solvent like ethanol .
    PAR
  • HY-145499
    XTT sodium hydrate

    		Fluorescent Dye Others
    XTT is a cell-impermeable, negatively charged tetrazolium dye that produces a water-soluble formazan when reduced at the cell surface by cellular-derived NADH and an electron mediator. It is frequently used in colorimetric assays to measure cell proliferation, cytotoxicity, and apoptosis.
    XTT sodium hydrate
  • HY-137805
    Ferrozine

    		Fluorescent Dye Others
    Ferrozine is a spectrophotometric reagent for iron, can react with divalent Fe to form a stable magenta complex species. The complex has an absorption peak at 562 nm .Ferrozine-based colorimetric assays can quantify iron in cells
    Ferrozine
  • HY-W051140
    Silver sulfate, 99%

    Disilver sulfate, 99%

    		 Biochemical Assay Reagents Others
    Silver sulfate, 99% (Disilver sulfate, 99%) can be used for colorimetric determination of nitrates, phosphates, and fluoride, or for the determination of chromium and cobalt in water. Silver sulfate, 99% is a kind of biological materials or organic compounds that are widely used in life science research .
    Silver sulfate, 99%
  • HY-120833
    Ac-Ile-Glu-Thr-Asp-pNA

    		Caspase Others
    Ac-Ile-Glu-Thr-Asp-pNA is a substrate for caspase-8. Caspase-8 binds to and cleaves the Ile-Glu-Thr-Asp (IETD) peptide sequence to release p-nitroalinide, which can be quantified by colorimetric detection at 405 nm as a measure of enzyme activity .
    Ac-Ile-Glu-Thr-Asp-pNA
  • HY-W151206
    Hydroxy naphthol blue disodium

    		Fluorescent Dye Others
    Hydroxy naphthol blue disodium, an azo dye, is a metal indicator for calcium and a colorimetric reagent for alkaline earth metal ions ( λmax = 650 nm). In the pH range between 12 and 13, the solution of the indicator is reddish pink in the presence of calcium ion and to deep blue in the presence of disodium EDTA .
    Hydroxy naphthol blue disodium
  • HY-134354A
    pNP-ADPr disodium

    ADP-ribose-pNP disodium

    		 Poly(ADP-ribose) Glycohydrolase (PARG) Others
    pNP-ADPr disodium is a colorimetric substrate that used for the first continuous Poly(ADP-ribose) glycohydrolase (PARG) and ADP-ribosyl hydrolase 3 (ARH3) activity assays. pNP-ADPr disodium can be used for the research of poly(ADP-ribose)polymerase (PARP) enzymes .
    pNP-ADPr disodium
  • HY-15924
    Thiazolyl Blue
    Maximum Cited Publications
    114 Publications Verification

    MTT; Thiazolyl Blue Tetrazolium bromide; Methylthiazolyldiphenyl-tetrazolium bromide

    		 Fluorescent Dye Others
    Thiazolyl Blue (MTT) is a cell-permeable and positively charged tetrazolium dye that is used to detect reductive metabolism in cells. Thiazolyl Blue is taken up by cells through the plasma membrane and then reduced to formazan by intracellular NAD (P) H-oxidoreductases. Thiazolyl Blue is frequently used in colorimetric assays to measure cell proliferation, cytotoxicity, and apoptosis .
    Thiazolyl Blue
  • HY-W127790
    Bathophenanthrolinedisulfonic acid disodium

    		Biochemical Assay Reagents Others
    Bathophenanthrolinedisulfonic acid disodium salt is used as a colorimetric reagent for the detection of iron. It is widely used for the determination of iron in aqueous solutions without the use of extraction solvents. It is used as a precursor for the preparation of the anion Europium(III) disulfonated bathophenanthroline tris(dibenzoylformic acid) complex and ruthenium II tris(rubphenanthroline disulfonate). It plays a crucial role in the catalytic oxidation of 2-hexanol by enabling it to form a water-soluble complex with palladium.
    Bathophenanthrolinedisulfonic acid disodium
  • HY-D0221
    2,4,6-Tri-2-pyridinyl-1,3,5-triazine

    NSC 112125; 2,4,6-Tipyidyl-s-tiazie

    		 Fluorescent Dye Others
    2,4,6-Tri-2-pyridinyl-1,3,5-triazine (NSC 112125) is a commonly used fluorescent dye for detecting iron. 2,4,6-Tri-2-pyridinyl-1,3,5-triazine forms a complex with Fe (II) and can be quantified as a measure of iron concentration by colorimetric detection at 594 nm .
    2,4,6-Tri-2-pyridinyl-1,3,5-triazine
  • HY-W115718
    Cuprizone
    1 Publications Verification

    		 Dopamine β-hydroxylase Neurological Disease
    Cuprizone is a copper chelating agent that forms a deep blue copper ketone complex with copper (II). The copper ketone reaction can be used in colorimetric tests for the presence of trace copper. Cuprizone can be used to induce some schizophrenia-like behavior in mice. Cuprizone acts on copper enzymes, including SOD1, cytochrome oxidase, and DβH, thereby causing oxidative stress and increasing DA levels in certain brain regions such as the medial prefrontal cortex (PFC) .
    Cuprizone
  • HY-120971
    N-Decanoyl p-Nitroaniline

    DepNA

    		 Endogenous Metabolite Metabolic Disease
    N-Decanoyl p-nitroaniline (DepNA) is one of several nitroaniline fatty acid amides which can be used to measure fatty acid amide hydrolase (FAAH) activity.1 FAAH is a relatively unselective enzyme in that it accepts a variety of amide head groups other than the ethanolamine of its endogenous substrate anandamide (AEA). It also will hydrolyze fatty acid amides with fewer carbons and fewer double bonds than arachidonate. Exposure of DepNA to FAAH activity results in the release of the yellow colorimetric dye p-nitroaniline (ε=13,500 at 410 nm). This allows the fast and convenient measurement of FAAH activity using a 96 well plate spectrophotometer.
    N-Decanoyl p-Nitroaniline

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