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quenched probe

" in MedChemExpress (MCE) Product Catalog:

43

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27

Fluorescent Dyes

2

Biochemical Assay Reagents

1

Click Chemistry

1

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Cat. No. Product Name Target Research Areas Chemical Structure
  • HY-D0040
    Calcein
    Maximum Cited Publications
    13 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 cannot directly cross the intact cell membrane of a living cell, unlike Calcein-AM (HY-D0041) which is cell-permeable. Calcein can also be used as a model drug for evaluating efficiency and bioavailability of drug delivery systems .
    Calcein
  • HY-43520
    BODIPY-FL

    		Fluorescent Dye Others
    BODIPY-FL is a green fluorescent dye that can be used to label probes or primers. BODIPY-FL fluorescence can be quenched after interacting with uniquely positioned guanine, making it useful for quantifying specific DNA or RNA molecules. The maximum absorption wavelength of BODIPY-FL is 505 nm, and the maximum emission wavelength is 513 nm .
    BODIPY-FL
  • HY-W012642
    2-Aminopurine

    		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-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-W074143
    Tris(4,7-diphenyl-1,10-phenanthroline)ruthenium(II) dichloride
    5+ Cited Publications

    		 Fluorescent Dye Others
    Tris(4,7-diphenyl-1,10-phenanthroline)ruthenium(II) dichloride ([Ru(dpp)3] 2+) is an electrochemiluminescent (ECL) probe and oxygen-sensitive sensor. Tris(4,7-diphenyl-1,10-phenanthroline)ruthenium(II) dichloride can be used to modify electrode surfaces for the detection of sulfates (S2O8 2-) and oxalates, based on electrochemical reactions that generate excited-state species, releasing photons through irreversible redox reactions. Tris(4,7-diphenyl-1,10-phenanthroline)ruthenium(II) dichloride utilizes the oxygen quenching of fluorescence mechanism, where fluorescence intensity reflects the metabolic rate of living microorganisms or oxygen levels within cells/tumors, allowing for real-time detection. Tris(4,7-diphenyl-1,10-phenanthroline)ruthenium(II) dichloride's main applications include microbial detection, antibacterial activity studies, and tumor microenvironment research .
    Tris(4,7-diphenyl-1,10-phenanthroline)ruthenium(II) dichloride
  • HY-D1045
    Dabcyl acid

    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-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-162543
    18:1 Liss Rhod PE

    18:1 Lissamine rhodamine PE

    		 Fluorescent Dye Others
    18:1 Liss Rhod (18:1 Lissamine rhodamine) PE is a fluorescent phospholipid and fluorescent probe.18:1 Liss Rhod PE admixes into phospholipid inks for large-scale monitoring of dip-pen nanolithography-generated lithographic structures via fluorescence microscopy.18:1 Liss Rhod PE undergoes phase separation or self-quenching under certain conditions in thin lipid membrane stacks .
    18:1 Liss Rhod PE
  • HY-126823
    Phen Green SK diacetate (5/6-mixture)
    Maximum Cited Publications
    15 Publications Verification

    PGSK diacetate (5/6-mixture)

    		 Fluorescent Dye Others
    Phen green SK (PGSK) diacetate (PGSK diacetate (5/6-mixture)) is a metal ion-sensitive fluorescent probe that can penetrate cell membranes. Phen green SK (PGSK) diacetate can react with a variety of metal ions, including Fe 2+, Cd 2+, Co 2+, Ni 2+, Zn 2+, etc. Phen green SK (PGSK) diacetate chelates Fe 2+, resulting in fluorescence quenching, which can be restored when a membrane-permeable chelator is added, thereby reflecting the changes in the intracellular chelatable iron pool. The excitation/emission maxima of Phen green SK diacetate are 507/532 nm, respectively .
    Phen Green SK diacetate (5/6-mixture)
  • HY-D2365
    QSY 21 NHS

    		Fluorescent Dye Others
    QSY 21 NHS is a dark quencher and an efficient energy transfer acceptor for far-red and near-infrared fluorescent probes. QSY 21 NHS operates at a wavelength range of 540-750 nm and is commonly used in FRET applications. QSY 21 NHS does not fluoresce under normal conditions. The NHS ester can be used to label primary amines (R-NH2) of proteins, amine-modified oligonucleotides and other amine-containing molecules. QSY 21 NHS can be conjugated with dendritic poly-L-lysine to achieve intramolecular quenching of Cy5 fluorescence .
    QSY 21 NHS
  • HY-149931
    BMV109

    		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-D1590
    BODIPY Green 8-P2M

    		Fluorescent Dye Others
    ODIPY Green 8-P2M is a novel thiol-reactive fluorescence probe based on the BODIPY fluorophore, the fluorescence is strongly quenched by d-PeT and then can be restored after reaction with thiol, resulting in an extremely high signal-to-noise ratio. ODIPY Green 8-P2M can be useful for detecting extremely low concentrations of protein in the gel after SDS-PAGE .
    BODIPY Green 8-P2M
  • HY-W127716
    Ru(bpy)2(mcbpy-O-Su-ester)(PF6)2
    1 Publications Verification

    		 Fluorescent Dye Cancer
    Ru(bpy)2(mcbpy-O-Su-ester)(PF6)2 is a potent ruthenium-based dye. Ru(bpy)2(mcbpy-O-Su-ester)(PF6)2 can bu used as an effective quencher of quantum dots (QDs) fluorescence and the capture probe of virus antigen EV71. Ru(bpy)2(mcbpy-O-Su-ester)(PF6)2 can be used sensitive electrogenerated chemiluminescence (ECL) labels for detection of matrix metalloproteinases (MMPs) .
    Ru(bpy)2(mcbpy-O-Su-ester)(PF6)2
  • HY-D2864
    Aza-CyBz

    		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-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-W001952
    6-Bromo-2-naphthol

    		Fluorescent Dye Drug Intermediate Others
    6-Bromo-2-naphthol is an RTP (real-time polymerase chain reaction) probe that forms a 1:1 or 2:1 complex with β-cyclodextrin (β-CD). 6-Bromo-2-naphthol is capable of real-time monitoring of PCR reactions and quantification of specific nucleic acid sequences. RTP probes are a class of small DNA or RNA sequences labeled with fluorescent dyes and quencher molecules, which can be widely used in gene expression analysis, SNP genotyping, and pathogen detection. 6-Bromo-2-naphthol embeds into the cyclodextrin cavity through hydrophobic interactions, inhibits the oxygen quenching effect, and emits a phosphorescent signal at room temperature. 6-Bromo-2-naphthol can also be used as an intermediate for the synthesis of antibacterial azo dyes, and its derivatives show antibacterial activity against Staphylococcus aureus, Escherichia coli and other bacteria .
    6-Bromo-2-naphthol
  • HY-W127832
    Ru(dpp)3(PF6)2
    1 Publications Verification

    		 Fluorescent Dye Others
    Ru(dpp)3(PF6)2 is a complex containing metallic ruthenium (Ru) and is a chemiluminescent oxygen probe. [Ru(dpp)3] 2+ is a luminescent substance that can undergo metal-to-ligand charge transfer (MLCT), and fluorescence will appear during the transfer of Ru to the ligand. At the same time, the fluorescence of Ru(dpp)3(PF6)2 is effectively quenched by molecular oxygen, so it is widely used in biosensors, environmental monitoring, and materials science. The property of Ru(dpp)3(PF6)2, which oxidizes Ru 2+ to Ru 3+, has also been used to design and construct solid-state light-emitting electrochemical cells .
    Ru(dpp)3(PF6)2
  • HY-D1450
    IR-1048

    S01448

    		 Fluorescent Dye Cancer
    IR-1048 is a nitroreductase (NTR)-responsive near-infrared fluorescence (NIR)/photoacoustic (PA) imaging probe and photothermal agent. IR-1048 is coupled with a nitroimidazole group to form IR-1048-MZ. IR-1048-MZ is catalytically reduced by NTR in a hypoxic environment, restoring strong near-infrared absorption and fluorescence emission (NIR II window), while activating the photothermal effect. IR-1048 relies on NTR-mediated electron transfer to relieve intramolecular fluorescence quenching, achieving specific imaging and photothermal ablation of tumor hypoxic areas. IR-1048 is mainly used for high-contrast NIR II/photoacoustic imaging and photothermal therapy research and tumor diagnosis of the tumor hypoxic microenvironment .
    IR-1048
  • HY-D1045A
    Dabcyl acid sodium

    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-W112090
    Palladium meso-tetra(pentafluorophenyl)porphyrin

    PdTFPP; 5,10,15,20-Tetrakis(pentafluorophenyl)-21H,23H-porphine palladium(II)

    		 Fluorescent Dye Others
    Palladium meso-tetra(pentafluorophenyl)porphyrin (PdTFPP) derives from palladium(II), acting as a fluorescence-quenched optical probe and high-performance oxygen concentration sensor with outstanding photostability and antioxidant capacity. Palladium meso-tetra(pentafluorophenyl)porphyrin exhibits reduced luminescence intensity as dissolved oxygen concentration rises. Palladium meso-tetra(pentafluorophenyl)porphyrin can be applied for real-time monitoring of live-cell respiration, hypoxic tissue imaging, and nanofibrous organic semiconductors in photodetectors for ambient oxygen detection .
    Palladium meso-tetra(pentafluorophenyl)porphyrin
  • HY-D2737
    DMT-BH2 amidite

    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
    DMT-BH1 amidite

    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-D1663
    APTAB

    		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-D2579
    Sulfo DBCO-UBQ-2

    		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-W012642A
    2-Aminopurine dihydrochloride

    		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-118213
    N-(2-Hydroxyethyl)-1,8-naphthalimide

    		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-D1049
    DNP-X acid

    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-W419044A
    Calcein calcium potassium

    		Fluorescent Dye Others
    Calcein calcium potassium 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 cannot directly cross the intact cell membrane of a living cell, unlike Calcein-AM (HY-D0041) which is cell-permeable. Calcein can also be used as a model drug for evaluating efficiency and bioavailability of drug delivery systems .
    Calcein calcium potassium
  • HY-W329161
    Calcein sodium salt

    		Fluorescent Dye Others
    Calcein sodium 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 cannot directly cross the intact cell membrane of a living cell, unlike Calcein-AM (HY-D0041) which is cell-permeable. Calcein can also be used as a model drug for evaluating efficiency and bioavailability of drug delivery systems .
    Calcein sodium salt
  • HY-D2204
    SHP1-IN-1

    		Phosphatase SHP1 Fluorescent Dye Cancer
    SHP1-IN-1 (compound 5p) is a fluorescent probe for the protein tyrosine phosphatase SHP1 containing the Src homology 2 domain. SHP1-IN-1 has SHP1 inhibitory activity, selectivity for Fe 3+ ions and good fluorescence properties. SHP1-IN-1 exhibits aggregation post-quenching (ACQ) effect, good interference immunity and low detection limit (5.55 μM) .
    SHP1-IN-1
  • HY-D2937
    BGQFL-9

    		Fluorescent Dye Others
    BGQFL-9 is a quenched probe. BGQFL-9 can label SNAP tags with successfully labeling all three proteins (GG-SNAP, G132-SNAP, SNAP). BGQFL-9 shows almost no fluorescence .
    BGQFL-9
  • HY-D2924
    CBG-549-QSY7

    		Fluorescent Dye Others
    CBG-549-QSY7 is a Dylight 549-labeled SNAP tag fluorescent probe (Ex/Em: 546 nm/580 nm), specially designed for non-washable fluorescence imaging applications. CBG-549-QSY7 employs an intramolecular FRET quenching mechanism: intramolecular fluorescence quenching occurs before binding to the SNAP tag, and upon binding, the quenching group is cleaved, releasing fluorescence. The background fluorescence of CBG-549-QSY7 is extremely low, and clear cell membrane images can be obtained after 5 minutes of incubation .
    CBG-549-QSY7
  • HY-179760
    16:0-7 Doxyl PC

    		Others Others
    16:0-7 Doxyl PC is a phosphocholine with a Doxyl group, which can be used as a membrane probe and a fluorescence quencher in the study of lipid bilayer structures, and is employed to study the membrane transport mediated by phosphatidylinositol translocase.
    16:0-7 Doxyl PC
  • HY-179883
    16:0-5 Doxyl PC

    		Others Metabolic Disease
    16:0-5 Doxyl PC is a phosphocholine with a Doxyl group, which can be used as a membrane probe and a fluorescence quencher in the study of lipid bilayer structures, and is employed to study the membrane transport mediated by phosphatidylinositol translocase.
    16:0-5 Doxyl PC
  • HY-179879
    16:0-16 Doxyl PC

    		Others Metabolic Disease
    16:0-16 Doxyl PC is a phosphocholine with a Doxyl group, which can be used as a membrane probe and a fluorescence quencher in the study of lipid bilayer structures, and is employed to study the membrane transport mediated by phosphatidylinositol translocase.
    16:0-16 Doxyl PC
  • HY-D3346
    Dusquench1 NHS ester

    		Fluorescent Dye Others
    Dusquench1 NHS ester is an amino-reactive fluorescent quencher (it does not emit light and has no emission wavelength, Ex = 480-580 nM), specially designed for labeling proteins, oligonucleotides and other biopolymers containing primary amines. It is a core reagent in the fields of qPCR probes, FRET detection and molecular beacons.
    Dusquench1 NHS ester
  • HY-D3319
    BHQ-3 carboxylic acid chloride

    		Biochemical Assay Reagents MMP Inflammation/Immunology Cancer
    BHQ‑3 carboxylic acid is an azo‑containing dark fluorescence quencher. BHQ‑3 carboxylic acid is conjugated to an MMP‑cleavable peptide and paired with a fluorophore to form an activatable probe for MMP activity detection in vitro. BHQ‑3 carboxylic acid shows maximal absorption in the 620 to 730 nm range. BHQ‑3 carboxylic acid–based fluorescent probes can be used in the research of arthritis and tumor‑related pathological processes. .
    BHQ-3 carboxylic acid chloride
  • HY-175163
    TPAPyN

    		Photosensitizer Cancer
    TPAPyN is a nitroreductase(NTR)-responsive type I photosensitizer. TPAPyN facilitates the imaging of hypoxic cancer cells and image-guided photodynamic therapy (PDT). TPAPyN does not emit fluorescence in the aqueous environment, but restores when NTR cleaves the nitrofuran quencher with aggregation-induced emission. TPAPyN can be used as a fluorescent probe for specific imaging of hypoxic cancer .
    TPAPyN
  • HY-203233
    Rhodamine-DHPE

    		Fluorescent Dye Others
    Rhodamine-DHPE is a fluorescently labeled phosphatidylethanolamine lipid that labels phospholipid bilayers. Rhodamine-DHPE serves as a fluorescence quenching substrate and membrane stain. The fluorescence lifetime of Rhodamine-DHPE decreases significantly in the presence of Cu 2+-PS complexes. Rhodamine-DHPE effectively stains the membranes of human red blood cells and mouse fibroblasts, and supports lifetime-resolved imaging via pump-probe fluorescence microscopy .
    Rhodamine-DHPE
  • HY-D3224
    HCP

    		Fluorescent Dye Neurological Disease
    HCP is a two-photon fluorescent probe capable of crossing the blood-brain barrier, which is specifically designed for real-time detection of hypochlorous acid (HClO/ClO -) produced by myeloperoxidase (MPO). Chlorination of the quinoline skeleton of HCP generates HCP-Cl, which eliminates intramolecular charge transfer (ICT) quenching and thereby produces fluorescence. HCP is suitable for in vivo dynamic imaging of HClO in the brains of epileptic mice and high-throughput screening of antiepileptic drugs (HCP-Cl: Ex/Em = 800 nm/495 nm) .
    HCP
  • HY-D3269
    Mito-Cu(II)

    		Fluorescent Dye Others
    Mito-Cu (II) is a mitochondria-targeted fluorescent probe (Ex/Em = 370/450 nM). Mito-Cu (II) specifically accumulates in mitochondria of living cells and enables real-time detection of exogenous Cu 2+ within mitochondria of living cells. Mito-Cu (II) achieves "on-off-on" fluorescence switching through sequential exposure to Cu 2+ and ethylenediaminetetraacetic acid (EDTA) (HY-Y0682). Its fluorescence is quenched after forming a 1:1 complex with Cu 2+, and the fluorescence recovers when Cu 2+ is chelated by EDTA .
    Mito-Cu(II)
  • HY-DY1091
    Calcein (solution)

    Fluorexon (solution)

    		 Fluorescent Dye Others
    Calcein (solution) (Fluorexon (solution)) 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 cannot directly cross the intact cell membrane of a living cell, unlike Calcein-AM (HY-D0041) which is cell-permeable. Calcein can also be used as a model drug for evaluating efficiency and bioavailability of drug delivery systems .
    Solvent and concentration: DMSO: 2 mM
    The 1 mL volume is defined as the base specification. All larger sizes correspond to incremental volumes of this base.
    Calcein (solution)
  • HY-D3188
    gGlu-2OMe SiR600

    		Fluorescent Dye Cancer
    gGlu-2OMe SiR600 is a γ-glutamyl transpeptidase (GGT) responsive fluorescent probe. gGlu-2OMe SiR600 can be converted into a highly fluorescent molecule via reaction with GGT, and its initial fluorescence is quenched through a photoinduced electron transfer (PeT) mechanism. gGlu-2OMe SiR600 exhibits fluorescence activation in malignant breast cancer and benign breast fibroadenoma tissues, enabling lesion visualization. gGlu-2OMe SiR600 can be used for research related to breast cancer and fibroadenoma .
    gGlu-2OMe SiR600

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