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quencher

" in MedChemExpress (MCE) Product Catalog:

75

Inhibitors & Agonists

32

Fluorescent Dye

5

Biochemical Assay Reagents

15

Peptides

3

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5

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Cat. No. Product Name Target Research Areas Chemical Structure
  • HY-W130025

    Cholinesterase (ChE) Neurological Disease
    p-Xylene bis(pyridinium bromide) (compound 21), a cationic charged quencher, is a week bisquaternary AChE and BChE inhibitor with IC50s of 1540 μM and 529 μM, respectively .
    p-Xylene bis(pyridinium bromide)
  • HY-P2536

    Angiotensin-converting Enzyme (ACE) Others
    Mca-Ala-Pro-Lys(Dnp)-OH, a specific ACE2 quenched fluorogenic substrate, can be used to detect ACE2 activity, such as urinary, heart and lung .
    Mca-Ala-Pro-Lys(Dnp)-OH
  • HY-P4931

    Mca-Lys-Pro-Leu-Gly-Leu-Dpa-Ala-Arg-NH2

    MMP Cancer
    Mca-Lys-Pro-Leu-Gly-Leu-Dap(Dnp)-Ala-Arg-NH2 (FS-6) is a fluorescent peptide that is a quenched MMP peptide substrate. Mca-Lys-Pro-Leu-Gly-Leu-Dap(Dnp)-Ala-Arg-NH2 can be used for real-time quantification of MMP enzymatic activity. Mca-Lys-Pro-Leu-Gly-Leu-Dap(Dnp)-Ala-Arg-NH2 is an elongated peptide of MMP substrate (FS-1) and is active against collagenases (MMP-1, MMP-8, MMP-13 ) and MT1-MMP with higher specificity constants than FS-1 . (Ex/Em=325 nm/400 nm)
    Mca-Lys-Pro-Leu-Gly-Leu-Dap(Dnp)-Ala-Arg-NH2
  • HY-D1663

    Fluorescent Dye Others
    APTAB is a fluorescent cationic membrane probe. APTAB locates the anthracene-labeled molecules incorporated into model membranes by fluorescence quenching .
    APTAB
  • HY-D1045A

    DABCYL sodium; Para-methyl red sodium

    Fluorescent Dye Others
    Dabcyl acid sodium (DABCYL sodium) is a nonfluorescent chromophore and a quencher. Dabcyl acid sodium can be used as molecular beacon nucleic acid probes to recognize and report the presence of specific nucleic acids in homogeneous solutions .
    Dabcyl acid sodium
  • HY-149931

    Fluorescent Dye Cancer
    BMV109 is a quenched probe that becomes fluorescent when cleaved and covalently bound by active cathepsin proteases. BMV109 can be exploited for tumor imaging .
    BMV109
  • HY-D2737

    BHQ-2 DMT amidite

    Fluorescent Dye Others
    DMT-BH2 amidite (BHQ-2 DMT amidite) is a black quencher dye for the synthesis of dual-labeled oligonucleotide probes for qPCR bearing 5'-quencher. This quencher is ideal for HEX, JOE, ROX, Cyanine5, and other dyes with emissions in the orange and red parts of the spectrum.
    DMT-BH2 amidite
  • HY-D2742

    BHQ-1 DMT amidite

    Fluorescent Dye Others
    DMT-BH1 amidite (BHQ-1 DMT amidite) is a true dark quencher with broad absorption curve which covers the visible spectrum with maximum in green to yellow region. It is used for the synthesis of dual labeled oligonucleotide probes for qPCR bearing 5'-quencher DusQ 1 and other FRET applications for multiplexing assays.
    DMT-BH1 amidite
  • HY-173308

    Fluorescent Dye Others
    QSY-21 is a fluorescence quencher. QSY-21 possesses broad absorption in far red and NIR range, and can quench fluorescence of dyes that emit in this region. This is a carboxylic acid derivative. QSY-21 has intense absorption maximum at 661 nm, making it useful as an acceptor in fluorescence resonance energy transfer (FRET) applications. It is a common quencher for Cyanine5, Cyanine5.5, AF 647, or other spectrally similar fluorescent dyes.
    QSY-21
  • HY-D2579

    Biochemical Assay Reagents Others
    Sulfo DBCO-UBQ-2 is a click chemistry reagent combining a dark quencher, UBQ-2, with a polyaromatic-azo backbone, offering no native emission. UBQ-2 effectively quenches fluorescence in the 560-670 nm range, ideal for qPCR probes and FRET applications with orange to far-red dyes .
    Sulfo DBCO-UBQ-2
  • HY-117245

    Reactive Oxygen Species (ROS) Fungal Others
    Pallidol is a potent and selective singlet oxygen quencher. Pallidol shows antioxidant and antifungal activities .
    Pallidol
  • HY-D2864

    Fluorescent Dye Others
    Aza-CyBz is a selective NaCl-responsive fluorescent probe. Aza-CyBz visualizes plant salt stress by forming ordered aggregates with NaCl, leading to near-infrared fluorescence quenching. Aza-CyBz acts via electrostatic interaction between the cationic cyanine dye and NaCl to form J-aggregates, causing fluorescence quenching with a detection limit of 170 μM .
    Aza-CyBz
  • HY-D1080
    EDANS
    1 Publications Verification

    1,5-EDANS

    Fluorescent Dye Others
    EDANS (1,5-EDANS) is a novel and quenched fluorogenic substrate for assaying retroviral protease by resonance energy transfer (RET) .
    EDANS
  • HY-153770

    Biochemical Assay Reagents Others
    DHPN is a reversible carrier of singlet oxygen ( 1O2) and can be used as a chemical and physical quencher of 1O2 .
    DHPN
  • HY-P4920

    Fluorescent Dye Others
    Mca-SEVNLDAEFK(Dnp)-NH2 contains a highly fluorescent 7-methoxycoumarin group that is efficiently quenched by resonance energy transfer to the 2,4-dinitrophenyl group. It can be used to measure the activities of peptidases that are capable of cleaving an amide bond between the fluorescent group and the quencher group, causing an increase in fluorescence, such as can be used to measure the activity of BACE-1 .
    Mca-SEVNLDAEFK(Dnp)-NH2
  • HY-170466

    1-Palmitoyl-2-stearoyl-(12-doxyl)-sn-glycero-3-phosphocholine

    Biochemical Assay Reagents Others
    16:0-12 Doxyl PC (1-Palmitoyl-2-stearoyl-(12-doxyl)-sn-glycero-3-phosphocholine) is a fluorescence quencher, and its nitrogen oxide is located downstream of the sn-2 chain. 16:0-12 Doxyl PC has a better fluorescence quenching effect onthe fluorophore is buried within the hydrocarbon interior of the bilayer .
    16:0-12 Doxyl PC
  • HY-P1853

    Angiotensin-converting Enzyme (ACE) Cardiovascular Disease
    Abz-FR-K(Dnp)-P-OH is an angiotensin I-converting enzyme (ACE) substrate and an internally quenched fluorogenic substrate for real time fluorescent assay .
    Abz-FR-K(Dnp)-P-OH
  • HY-N12698

    Others Others
    (9Z)-Antheraxanthin is a carotenoid and can be isolated from K. antarctica .
    (9Z)-Antheraxanthin
  • HY-42984

    Biochemical Assay Reagents Others
    BHQ-2 NHS is a dark quencher with no native emission due to the polyaromatic-azo backbone and a terminal NHS ester. UBHQ-2 NHS has a wide and intense quenching range from 560-670 nm, which makes it useful as an acceptor in fluorescence resonance energy transfer (FRET) applications in conjunction with orange to far-red emitting dyes. The NHS ester can be applied to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules.
    BHQ-2 NHS
  • HY-126965

    Biochemical Assay Reagents Others
    Lipid Y is a potent monosaccharide which contains two bromines per chain. lipid Y binds to a tryptophan residue in a membrane protein and then quenches the fluorescence of the tryptophan residue .
    Lipid Y
  • HY-D1045

    DABCYL; Para-methyl red

    Fluorescent Dye Others
    Dabcyl acid (Dabcyl) is a nonfluorescent chromophore and a quencher. Dabcyl acid can be used as molecular beacon nucleic acid probes to recognize and report the presence of specific nucleic acids in homogeneous solutions .
    Dabcyl acid
  • HY-D1030

    Fluorescent Dye Inflammation/Immunology
    Fluorescein Biotin is used as an alternative to radioactive biotin for detecting and quantitating biotin-binding sites by either fluorescence or absorbance; the the fluorescence or absorbance of Fluorescein Biotin is quenched, upon binding to avidin or streptavidin.
    Fluorescein Biotin
  • HY-P4919

    Beta-secretase Others
    Mca-SEVNLDAEFK(Dnp) is a Beta-secretase 1 (BACE-1) peptide FRET substrate, containing the 'Swedish' Lys-Met/Asn-Leu mutation of the amyloid precursor protein (APP) β-secretase cleavage site. Cleavage at -Leu-Asp- of Mca-SEVNLDAEFK(Dnp) liberates the highly fluorescent 7-methoxycoumarin (Mca) fragment from the proximity quenching effect of the 2,4-dinitrophenyl (Dnp) internal quencher resulting in a large and easily detectable increase in fluorescence intensity.
    Mca-SEVNLDAEFK(Dnp)
  • HY-W127703
    Octadecyl Rhodamine B chloride
    1 Publications Verification

    Fluorescent Dye Biochemical Assay Reagents Others
    Octadecyl Rhodamine B chloride is an amphiphilic fluorescent probe with both membrane-binding ability and fluorescent properties, which easily forms aggregates in aqueous phase leading to self-quenching. Octadecyl Rhodamine B chloride can be used for cell membrane staining and further applied in membrane biology research. The maximum absorption/emission wavelengths of Octadecyl Rhodamine B chloride monomer in Triton X-100 are 565 nm/585 nm; the absorption peaks of aggregates in water are blue-shifted to 524 nm and 574 nm, with significantly quenched fluorescence .
    Octadecyl Rhodamine B chloride
  • HY-W013195

    Nucleoside Antimetabolite/Analog Cancer
    8-Bromoadenosine is an adenosine analog. Adenosine analogs mostly act as smooth muscle vasodilators and have also been shown to inhibit cancer progression. 8-Bromoadenosine can quench the intrinsic fluorescence of human serum albumin (HSA) through static quenching procedure. 8-Bromoadenosine can be used to synthesize adenosine phosphate, such as Acadesine (HY-13417), Clofarabine (HY-A0005), Fludarabine phosphate (HY-B0028) and Vidarabine (HY-B0277) .
    8-Bromoadenosine
  • HY-167632

    Reactive Oxygen Species (ROS) Inflammation/Immunology
    meso-Zeaxanthin accumulates in the central retina and forms macular pigment together with lutein and zeaxanthin, which has the function of light filtering. meso-Zeaxanthin can quench ROS and exert antioxidant function .
    meso-Zeaxanthin
  • HY-W012642A

    DNA Stain Others
    2-Aminopurine dihydrochloride is a fluorescent analog of guanosine. 2-Aminopurine dihydrochloride can be used as a fluorescence probe for nucleic acid structure and dynamics. Incorporating 2-Aminopurine dihydrochloride into DNA quenches its fluorescence .
    2-Aminopurine dihydrochloride
  • HY-163204

    P-glycoprotein Cancer
    RhQ-DMB is a potent inhibitor of P-gp. RhQ-DMB exhibits high affinity and inhibitory activity in yeast strains expressing CmABCB1 .
    RhQ-DMB
  • HY-118213

    Fluorescent Dye Others
    N-(2-Hydroxyethyl)-1,8-naphthalimide is a fluorescent probe for detecting nucleic acids and their precursors. The fluorescence of N-(2-Hydroxyethyl)-1,8-naphthalimide will be quenched by these molecules.
    N-(2-Hydroxyethyl)-1,8-naphthalimide
  • HY-D1080R

    1,5-EDANS (Standard)

    Fluorescent Dye Others
    EDANS (1,5-EDANS) (Standard) is an analytical standard for EDANS. This product is intended for research and analytical applications. EDANS (1,5-EDANS) is a novel quenched fluorogenic substrate for the analysis of retroviral proteases by resonance energy transfer .
    EDANS (Standard)
  • HY-D1294

    Fluorescent Dye Cancer
    SY-21 NHS ester is a QSY-21 analog. QSY-21 is a specific quencher against A647. QSY-21 labels polymer. QSY-21 can be used in colon cancer research .
    SY-21 NHS ester
  • HY-D1049

    6-((2,4-Dinitrophenyl)amino)hexanoic acid

    Fluorescent Dye Metabolic Disease
    DNP-X acid (6-((2,4-Dinitrophenyl)amino)hexanoic acid), an amine-reactive building block for developing a probe, can be recognized by anti-DNP antibodies. DNP-X acid is also an excellent amine-reactive FRET quencher paired with Trp or Tyr.
    DNP-X acid
  • HY-P10163

    Fluorescent Dye Others
    α-Secretase Substrate II, Fluorogenic is an internally quenched fluorogenic peptide substrate for α-Secretase that contains the α-secretase cleavage site of β-Amyloid precursor protein (APP) .Ex/Em = 340/490 nm
    α-Secretase Substrate II, Fluorogenic
  • HY-W007671

    Endogenous Metabolite Tyrosinase Others
    H-Tyr-OMe is an endogenous metabolite. H-Tyr-OMe quenches the fluorescence of carbon dots by oxidizing the phenolic hydroxyl group to quinone under the catalysis of Tyrosinase, and its amino and thiol binding ability can respond to changes in the concentration of biothiols .
    H-Tyr-OMe
  • HY-155786

    TGF-beta/Smad Others
    3,7-DMF is an orally active inhibitor of TGF-β1-induced activation of HSCs. 3,7-DMF induces antioxidant genes and quenches ROS away, which can be used to study liver fibrosis .
    3,7-DMF
  • HY-D0720
    Lucigenin
    5+ Cited Publications

    NSC-151912; L-6868

    Fluorescent Dye Reactive Oxygen Species (ROS) Others
    Lucigenin is a chemiluminescence probe. Lucigenin can be used to detect the production of endogenous superoxide anion radical (O 2-). Lucigenin is extremely sensitive to chloride ions, while it combined with chloride ions, the fluorescence will be quenched. Lucigenin also can be used as a chloride indicator. Ex/Em=455/505 nm .
    Lucigenin
  • HY-118159

    DPPP

    Reactive Oxygen Species (ROS) Others
    Diphenyl-1-pyrenylphosphine (DPPP) is a fluoregenic peroxide reactive probe. Diphenyl-1-pyrenylphosphine exhibits a unique phototriggered aggregation-induced emission (AIE)/aggregation-induced quenching (ACQ) transition with a remarkable third-order nonlinear optical signal change .
    Diphenyl-1-pyrenylphosphine
  • HY-D0040
    Calcein
    Maximum Cited Publications
    7 Publications Verification

    Fluorexon

    Fluorescent Dye Others
    Calcein is a fluorescent dye and self-quenching probe, used as an indicator of lipid vesicle leakage, and also as a complexometric indicator for titration of calcium ions with EDTA, and for fluorometric determination of calcium. Calcein can also be used as a model drug for evaluating efficiency and bioavailability of drug delivery systems .
    Calcein
  • HY-W012642

    DNA Stain Others
    2-Aminopurine, a fluorescent analog of guanosine and adenosine, is a widely used fluorescence-decay-based probe of DNA structure. When 2-Aminopurine is inserted in anoligonucleotide, its fluorescence is highly quenched by stacking with the natural bases. 2-Aminopurine has been used to probe nucleic acid structure and dynamics .
    2-Aminopurine
  • HY-D2761

    Fluorescent Dye Others
    DY-680-NHS ester is an amine reactive hydrophilic fluorochrome. It can be conjugated to an antibody with higher D/P ratio without causing fluorescence quenching and conjugate precipitation, and it is widely used in applications including western blotting, microscopy, flow cytometry, and cell-based assays. The spectrum has an excitation of 690nm and emission at 709nm.
    DY-680-NHS ester
  • HY-D1682

    Fluorescent Dye Others
    NFQ1 is a non-fluorescent quencher (absorption wavelength: 474 nm), and is used for a new type of One Sample Fluorescence Resonance Energy Transfer (OS-FRET) method. OS-FRET enable measurement of unquenched donor emission in the same sample. NFQ1 shows broad absorption spectrum ensuring its utility as a dark acceptor for many donors .
    NFQ1
  • HY-D0929

    α-Naphthol Orange

    Fluorescent Dye Others
    Orange I (α-Naphthol Orange) is an azo dye that can form a complex with Methylene blue (HY-14536) and cause fluorescence quenching. The equilibrium constant of the complex of Orange I and Methylene blue is 79900 mol -1·dm 3. Orange I can change the absorption spectrum of itself and Methylene blue .
    Orange I
  • HY-D1050
    DNP-X, SE
    1 Publications Verification

    6-(2,4-Dinitrophenyl)aminohexanoic acid, succinimidyl ester

    Fluorescent Dye Metabolic Disease
    DNP-X, SE (6-(2,4-Dinitrophenyl)aminohexanoic acid, succinimidyl ester), the DNP-X acid modified by succinimidyl ester, is an amine-reactive building block for developing a probe, which can be recognized by anti-DNP antibodies. DNP-X, SE (6-(2,4-Dinitrophenyl)aminohexanoic acid, succinimidyl ester) is also an excellent amine-reactive FRET quencher paired with Trp or Tyr.
    DNP-X, SE
  • HY-W419044A

    Fluorescent Dye Others
    Calcein calcium potassium is the calcium potassium salt form of Calcein (HY-D0040). Calcein calcium potassium is a fluorescent dye and self-quenching probe, that can used as an indicator of lipid vesicle leakage, and also as a complexometric indicator for titration of calcium ions with EDTA, and for fluorometric determination of calcium. Calcein calcium potassium can also be used as a model drug for evaluating efficiency and bioavailability of drug delivery systems .
    Calcein calcium potassium
  • HY-P10922

    Cathepsin Others
    Cathepsin E substrate e is a substrate of Cathepsin E. Cathepsin E substrate e was designed in such a way that due to the close proximity of a Mca-donor and a Dnp-acceptor, a near complete intramolecular quenching effect was achieved in its intact state. After the proteolytic cleavage of the hydrophobic motif of the peptide substrate, both Mca and Dnp would be further apart, resulting in bright fluorescence .
    Cathepsin E substrate e
  • HY-W013205

    Biochemical Assay Reagents Others
    Bis(4-nitrophenyl) phosphate is a catalyst for metal micelles and can catalyze the hydrolysis of (4-nitrophenyl) phosphate. Bis(4-nitrophenyl) phosphate is also an effective catalyst for ring-opening polymerization (ROP), which can achieve controlled polymerization of β-butyrolactone (β-BL) ring-opening and can be used to prepare diembedded polymers without quenching. segment copolymer .
    Bis(4-nitrophenyl) phosphate
  • HY-P1883

    Fluorescent Dye Infection
    Bacterial Sortase Substrate III, Abz/DNP is an internally quenched fluorescent peptide substrate. Staphylococcus aureus transpeptidase sortase A (SrtA) reacts with its native substrate Bacterial Sortase Substrate III, Abz/DNP, cleaving it and catalyzing the formation of an amide bond between the carboxyl group of threonine and the amino group of cell-wall crossbridges. Cleavage of this substrate can be monitored at Ex/Em=320 nm/420 nm.
    Bacterial Sortase Substrate III, Abz/DNP
  • HY-158235

    Tyrosinase Others
    Tyrosinase-IN-27 (compound 6f) is a tyrosinase (TYR) inhibitor (IC50: 0.88 μM) that statically quenches TYR. Tyrosinase-IN-27 increases the hydrophobicity of the enzyme microenvironment by binding to TYR, reducing the content of α-helices in the enzyme and changing its secondary structure. Tyrosinase-IN-27 can be used in the food industry to effectively inhibit the browning of lotus root slices. .
    Tyrosinase-IN-27
  • HY-P3123

    Fluorescent Dye Others
    Dnp-RPLALWRS is a fluorescent peptide substrate designed for human matrilysin (MMP-7). After enzymatic cleavage of Dnp-RPLALWRS at the alanine-leucine bond, the release of the Dnp group alleviates fluorescence quenching, thereby enabling real-time quantitative analysis of MMP-7 activity by increasing tryptophan emission. Dnp-RPLALWRS provides a sensitive and efficient detection method for kinetic studies and inhibitor screenin .
    Dnp-RPLALWRS
  • HY-P3749

    Fluorescent Dye Others
    Mca-(ala7,lys(dnp)9)-bradykinin is a sensitive fluorogenic substrate for ECE-1 (endothelin-converting enzyme-1). The incorporation of a (7-methoxycoumarin-4-yl)acetyl (Mca) fluorescent group and a 2,4-dinitrophenyl (Dnp) quenching group has resulted in a large fluorescence increase upon substrate cleavage .
    Mca-(ala7,lys(dnp)9)-bradykinin

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