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  4. Fluorescent Dye

Fluorescent Dye

Fluorescence is a phenomenon of photoluminescence in luminescence. When an atom is irradiated by light, some electrons around the nucleus jump from their original orbitals to higher energy orbitals under the influence of light energy, i.e., from the ground state to the first or second excited single-line state, etc. Due to the instability of the first or second excited singlet state, the electron returns from the excited singlet state to the ground state accompanied by released energy, resulting in fluorescence.

Fluorescent dyes can be covalently bound or physically adsorbed in the structure of the substance. The fluorescence properties allow for the characterization, localization and quantitative analysis of the labeled object. Fluorescent dyes have shown great potential for the detection of proteins, nucleic acids, cells, and immunoassays, attributed to the advantages in non-radioactive contamination, simple experimental operation and easy observation.

Fluorescent dyes have penetrated many fields such as pharmacology, physiology, environmental science, and information science, as well as functional studies of proteins and drug screening.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-117468
    Lissamine rhodamine B
    		98.00%
    Lissamine rhodamine B is a red-fluorescent dye, it is a derivative of rhodamine. Lissamine rhodamine B can be used as a fluorescent probe to develop competitive aptamer fluorescence anisotropy/polarization (FA/FP) assays.
    Lissamine rhodamine B
  • HY-D0931
    Sudan III
    		98.21%
    Sudan III is a hydrophobic bisazo dye.
    Sudan III
  • HY-D0025
    7-Amino-4-methylcoumarin-3-acetic acid
    		99.85%
    7-Amino-4-methylcoumarin-3-acetic acid is a fluorescent protein labelling agent. 7-Amino-4-methylcoumarin-3-acetic acid emits in the blue region (440-460 nm) on activation with UV light (350 nm).
    7-Amino-4-methylcoumarin-3-acetic acid
  • HY-D2836
    FITC-HA (MW 1000000)
    FITC-HA (FITC-Hyaluronate) (MW 100000) is a fluorescent dye composed of FITC (HY-66019) and Hyaluronic acid (HY-B0633A) (HA). FITC-HA (FITC-Hyaluronate) (MW 100000) can be used for cell tracing and drug delivery.
    FITC-HA (MW 1000000)
  • HY-D1809
    Vari Fluor 405-Streptavidin
    Vari Fluor 405-Streptavidin is a dye marker of Vari Fluor-streptavidin consisting of labeling streptavidin with a Vari Fluor series of fluorescent probes. Streptavidin is a high-affinity tetramer protein, each tetramer consisting of four identical streptavidin subunits. Streptavidin binds to biotin specifically via a reversible non-covalent effect. Streptavidin can achieve rapid and efficient detection of biotin markers, and is often used in immunofluorescence (IF), enzyme-linked immunosorbent assay (ELISA), immunohistochemical staining (IFH), in situ hybridization (ISH) and other experiments. Ex/Em=405 nm/431 nm.
    Vari Fluor 405-Streptavidin
  • HY-D2367
    Rhodamine B NHS ester
    Rhodamine B NHS ester is a fluorophore featuring an NHS ester. Rhodamine B is a fluorescent dye which is used in fluorescence-based assays in vivo. NHS esters are highly reactive towards amines, forming amides under mild conditions.
    Rhodamine B NHS ester
  • HY-W923198
    Fluorescein O-methacrylate
    Fluorescein O-methacrylate (Methacryloyloxy fluorescein) is a pH-sensitive dye featuring a fluorescent monomer, characterized by an excitation spectrum at 490 nm and an emission spectrum at 520 nm. With fluorescein serving as an indicator that possesses minimal negative charges, it exhibits properties such as biocompatibility, non-toxicity, and excellent dispersion in aqueous solutions.
    Fluorescein O-methacrylate
  • HY-157036
    INSA
    		98.82%
    INSA is a a pH-sensitive fluorescent probe. INSA can simultaneously light up mitochondria (red emission) and lysosomes (green emission) for their internal pH differences.
    INSA
  • HY-D1191
    SYBR green I chloride
    		98.09%
    SYBR green I (chloride) is a multifunctional dye. Dyes are important tools in biological experiments. They can help researchers observe and analyze cell structures, track biomolecules, evaluate cell functions, distinguish cell types, detect biomolecules, study tissue pathology and monitor microorganisms. Their applications range from basic scientific research to clinical A wide range of diagnostics. Dyes are also widely used in traditional fields such as textile dyeing, as well as in emerging fields such as functional textile processing, food pigments and dye-sensitized solar cells.
    SYBR green I chloride
  • HY-158739
    Rhodamine dithenoyl hydrazide
    		98.00%
    Rhodamine dithenoyl hydrazide (probe 1) possesses excellent recognition and selectivity for Fe3+ ion. Rhodamine dithenoyl hydrazide exhibits Excitation/Emission maxima of 543/550-700 nm, respectively.
    Rhodamine dithenoyl hydrazide
  • HY-135414B
    Cyanine5 NHS ester iodide
    		98.02%
    Cyanine5 NHS ester iodide is a red emitting fluorescent dye for labeling of amino-groups in peptides, proteins, and oligonucleotides.
    Cyanine5 NHS ester iodide
  • HY-D2178
    AF 568 NHS ester
    AF 568 NHS ester is a derivative of the orange fluorescent dye AF 568. AF 568 NHS ester is widely used in cell dyes, biological dyes, biomolecules and particle fluorescent labeling. AF 568 exhibits maximum absorption wavelength of 579 nm and the maximum emission wavelength of 603 nm.
    AF 568 NHS ester
  • HY-D1265
    EtS-DMAB
    		99.80%
    EtS-DMAB (HClO-green) is a fluorescent probe, which can selectively detect hypochlorous acid (HOCl) (λex=440 nm, λem=610 nm). EtS-DMAB is applied to image exogenous and endogenous HOCl in live cells.
    EtS-DMAB
  • HY-D1895A
    3,5-DiBr-PAESA sodium
    3,5-DiBr-PAESA (sodium) is an ultrasensitive chelating agent used for the determination of silver (I) in water in the absence of interfering ions. It can also be used for the determination of copper (II).
    3,5-DiBr-PAESA sodium
  • HY-W017873
    9-Fluorenylmethyl carbazate
    		99.87%
    9-Fluorenylmethyl carbazate is used as a fluorophore reagent for a fluorimetric detection of glycans.
    9-Fluorenylmethyl carbazate
  • HY-139014
    N-ε-propargyloxycarbonyl-L-lysine
    		98.0%
    N-ε-propargyloxycarbonyl-L-lysine (H-L-Lys(Poc)-OH) is a lysine-based unnatural amino acid (UAA). N-ε-propargyloxycarbonyl-L-lysine is widely used for bio-conjugation of fluorescent probes in diverse organisms from E. coli to mammalian cells even in animals. N-ε-propargyloxycarbonyl-L-lysine is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.
    N-ε-propargyloxycarbonyl-L-lysine
  • HY-W035051
    TSPP tetrasodium
    TSPP tetrasodium is a photosensitizer that has shown impressive effects in in vivo regression of cancer and microorganism infections (Ex: 413 nm, Em: 640 nm).
    TSPP tetrasodium
  • HY-D1148
    HKGreen-4I
    		99.86%
    HKGreen-4I is a highly sensitive green fluorescent probe for the specific detection of ONOO- in living cells with a maximum excitation wavelength and emission wavelength of 520 nm and 543 nm, respectively.
    HKGreen-4I
  • HY-D1574
    C6 NBD Sphingomyelin
    		98.0%
    C6 NBD Sphingomyelin is a fluorescent short-chain analogue of Sphingomyelin (HY-113498). Chlamydia trachomatis acquires C6 NBD Sphingomyelin endogenously synthesizes from C6-NBD-ceramide and transportes to the chlamydial inclusion. C6 NBD Sphingomyelin can incorporate into the plasma membrane.
    C6 NBD Sphingomyelin
  • HY-D0936
    SPQ
    		99.52%
    SPQ is a fluorescent dye. SPQ can be used to measure chloride ion concentration transients and transport rates in vesicles, cells, and even intact epithelium.
    SPQ
Cat. No. Product Name / Synonyms Application Reactivity