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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-D1037
    Disperse red 50
    Disperse red 50 is a red dye derived from anthraquinone. It is used in plastics, textiles and cosmetics.
    Disperse red 50
  • HY-D2882E
    RB-PEG-OH (MW 5000)
    RB-PEG-OH (MW 5000) (Rhodamine B-PEG-OH (MW 5000)) is a fluorescent dye composed of Rhodamine B (HY-Y0016), PEG and a Hydroxyl group. RB-PEG-OH (MW 5000) can be used for fluorescent labeling and imaging (Ex/Em = 546/610 nm).
    RB-PEG-OH (MW 5000)
  • HY-D2050
    ATTO 532 amine
    ATTO 532 amine is an amine derivative of ATTO 532, the maximum excitation/emission wavelength: 532/552 nm.
    ATTO 532 amine
  • HY-D1769
    N-hydroxy Rhodamine B amide
    N-hydroxy Rhodamine B amide is a ClO- indicator, which is hydrolyzed to prduce fluorescence in the presence of ClO-. The fluorescence intensity of N-hydroxy Rhodamine B amide is proportional to the product, thus can be used to quantify ClO-.
    N-hydroxy Rhodamine B amide
  • HY-D0796
    Propyl red
    Propyl red 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.
    Propyl red
  • HY-D2092
    PE-VF680 Maleimide
    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.
    PE-VF680 Maleimide
  • HY-147206C
    Biotin-PEG-Alk (MW 3400)
    Biotin-PEG-Alk (MW 3400) is a biotin labeled PEG derivative. Biotin is an enzyme co-factor, can be used for labeling protein; PEG is a hydrophilic and water-soluble polymer with low toxicity; Alk (Alkyne), acyclic (branched or unbranched) aliphatic hydrocarbon, can react with azido, which improve the efficiency of biotin binding targets. Biotin-PEG-Alk (MW 3400) is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.
    Biotin-PEG-Alk (MW 3400)
  • HY-P10083
    Ac-VQVD-pNA
    Ac-VQVD-pNA is a chromogenic substrate of caspase 3.
    Ac-VQVD-pNA
  • HY-D1645
    DANSYL-X, SE
    DANSYL-X, SE is an environmentally sensitive hydrophobic dye (Excitation 333 nM; Emission 518 nM). DANSYL-X, SE can increase fluorescence intensity in hydrophobic environment.
    DANSYL-X, SE
  • HY-NP163B
    Wheat germ agglutinin-AF532
    Wheat germ agglutinin-AF532 (WGA-AF532) is a plant lectin that contains the fluorescent dye AF532, which can be used to identify carbohydrate chains. Wheat germ agglutinin-AF532 can be used to assess abnormal glycosylation levels in the body. The specific glycosylation detection sites of Wheat germ agglutinin is bis-GlcNAc, SA.
    Wheat germ agglutinin-AF532
  • HY-D1274
    Sulfo-cyanine3 azide
    Sulfo-cyanine3 azide is an azide cyanine dye and fluorescent probe (Ex/Em=548/563 nm). Sulfo-cyanine3 azide can be involved in synthesis of fused tricyclic heterocycles, produces immunostimulatory agents. It contains an azide group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing alkyne groups. It can also undergo ring strain-promoted alkyne-azide cycloaddition (SPAAC) with molecules containing DBCO or BCN groups.
    Sulfo-cyanine3 azide
  • HY-D2194
    AgAuSe-COOH (1000 nm)
    AgAuSe-COOH (1000 nm) is a fluorescent quantum dot that emits fluorescence in the near-infrared II region, with an emission peak reaching 1000 nm. AgAuSe-COOH (1000 nm) has the advantages of narrow band gap, large Stokes shift, and good photostability. AgAuSe-COOH (1000 nm) can bind proteins, antibodies, peptides, PEG, etc., and can be widely used in the field of biological imaging.
    AgAuSe-COOH (1000 nm)
  • HY-D1508
    2-(Pyren-1-ylaminocarbonyl)ethyl methanethiosulfonate
    2-(Pyren-1-ylaminocarbonyl)ethyl methanethiosulfonate is a fluorescent.
    2-(Pyren-1-ylaminocarbonyl)ethyl methanethiosulfonate
  • HY-D1247
    Hydroxynaphthol Blue
    Hydroxynaphthol Blue enables visual tube closure detection. Hydroxynaphthol Blue shows high specificity for the gene encoding Ara h 1 for visual field detection of peanut allergens.
    Hydroxynaphthol Blue
  • HY-D2154
    AF 430 carboxylic acid
    AF 430 carboxylic acid 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 carboxylic acid can form covalent bonds through a condensation reaction between carboxylic acid groups and molecules containing amino groups. To achieve specific coupling of dye labels and biomolecules.
    AF 430 carboxylic acid
  • HY-D0951
    Methyl violet dye
    Methyl violet dye 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.
    Methyl violet dye
  • HY-D1486
    4,4-Difluoro-8-(4'-iodophenyl)-1,7-bis-(1'-napthyl)-4-bora-3alpha,4alpha-diaza-s-indacene
    4,4-Difluoro-8-(4'-iodophenyl)-1,7-bis-(1'-napthyl)-4-bora-3alpha,4alpha-diaza-s-indacene is a fluorescent dye for DNA sequencing.
    4,4-Difluoro-8-(4'-iodophenyl)-1,7-bis-(1'-napthyl)-4-bora-3alpha,4alpha-diaza-s-indacene
  • HY-147206A
    Biotin-PEG-Alk (MW 1000)
    Biotin-PEG-Alk (MW 1000) is a biotin labeled PEG derivative. Biotin is an enzyme co-factor, can be used for labeling protein; PEG is a hydrophilic and water-soluble polymer with low toxicity; Alk (Alkyne), acyclic (branched or unbranched) aliphatic hydrocarbon, can react with azido, which improve the efficiency of biotin binding targets. Biotin-PEG-Alk (MW 1000) is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.
    Biotin-PEG-Alk (MW 1000)
  • HY-D0267
    Quinaldine red
    Quinaldine red is a fluorescent probe for determining the melting temperature (Tm) of proteins.
    Quinaldine red
  • HY-D1513
    O-Methyl-O-(N-butylfluorescein)phosphate
    O-Methyl-O-(N-butylfluorescein)phosphate is a fluorescent dye.
    O-Methyl-O-(N-butylfluorescein)phosphate
Cat. No. Product Name / Synonyms Application Reactivity