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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-D0125
    4-(1-Methylhydrazino)-7-nitrobenzofurazan
    4-(1-Methylhydrazino)-7-nitrobenzofurazan 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.
    4-(1-Methylhydrazino)-7-nitrobenzofurazan
  • HY-P5296
    Dabsyl-Leu-Gly-Gly-Gly-Ala-Edans
    Dabsyl-Leu-Gly-Gly-Gly-Ala-Edans is a fluorophore Dabsyl-labeled peptide. Dabsyl-Leu-Gly-Gly-Gly-Ala-Edans can be used to test the peptidase activity of the LasA protease of Pseudomonas aeruginosa. Dabsyl-Leu-Gly-Gly-Gly-Ala-Edans has enzyme specificity and has application value.
    Dabsyl-Leu-Gly-Gly-Gly-Ala-Edans
  • HY-156302
    Coumarin-PEG2-endoBCN
    Coumarin-PEG2-endoBCN is a fluorescent dye containing a coumarin fluorophore and can be used as a click chemistry reagent.
    Coumarin-PEG2-endoBCN
  • HY-159692D
    FAM labled AZD8701 sodium
    FAM labled AZD8701 sodiumis a FAM labled AZD8701 sodium.
    FAM labled AZD8701 sodium
  • HY-156303
    Coumarin-PEG2-TCO
    Coumarin-PEG2-TCO is a dye derivative of Coumarin (HY-N0709) containing 2 PEG units. Coumarin-PEG2-TCO utilizes its TCO group to undergo an inverse electron demand Diels-Alder reaction (iEDDA) with molecules bearing Tetrazine groups.
    Coumarin-PEG2-TCO
  • HY-N15908
    18:0 PEG2000 PE CF ammonium
    18:0 PEG2000 PE CF ammonium is a fluorescent PEG lipid.
    18:0 PEG2000 PE CF ammonium
  • HY-D1372
    Cyanine3 amine hydrochloride
    Cyanine3 amine hydrochloride, an analog of Cyanine3 amine, is a potent green fluorescent dye. Cyanine3 amine hydrochloride has the primary amine group and is covalently coupled with reactive groups such as NHS esters, carboxy groups (after carbodiimide activation), and epoxides. (λex=555 nm, λem=570 nm).
    Cyanine3 amine hydrochloride
  • HY-D3405
    BO-TAP-3
    BO-TAP-3 is an orange fluorescent carbocyanine monomer dye, and it is also a cell impermeable nucleic acid staining agent. When there is no nucleic acid present, BO-TAP-3 shows a non-fluorescent state. However, when it binds to double-stranded DNA, it exhibits multiple fluorescence enhancement effects. BO-TAP-3 can be used for cell nucleus and cytoplasm imaging, bacterial and sperm labeling, and can also be applied in nucleic acid detection and amplification research. It can also be used as a temperature sensor (Ex/Em = 564/600 nM).
    BO-TAP-3
  • HY-D2063
    ATTO 740 maleimide
    ATTO 740 maleimide is a new fluorescent marker based on the Rhodamine structure. It has strong absorption, high fluorescence quantum yield, high thermal stability and photochemical stability, and is suitable for single molecule detection and high-resolution microscopy. ATTO 740 maleimide is a maleimide derivative of ATTO 740, which can be used to label proteins or antibodies.
    ATTO 740 maleimide
  • HY-148412D
    FAM labled Monarsen sodium
    FAM labled Monarsen sodiumis a FAM labled Monarsen sodium.
    FAM labled Monarsen sodium
  • HY-D2109
    TAMRA-PEG4-COOH
    TAMRA-PEG4-COOH is a dye derivative of TAMRA (HY-135640) containing 4 PEG units. TAMRA-PEG4-COOH contains carboxyl groups, which can condense ammonia to form covalent bonds.
    TAMRA-PEG4-COOH
  • HY-D0812
    Xylenol blue
    Xylenol Blue is a sulfonephthalein dye. It exhibits observable color changes in response to variations in pH. Xylenol Blue undergoes two distinct color transitions across two specific pH ranges: an acidic range and an alkaline range. In a neutral solution, Xylenol Blue appears yellow (at pH 8); in a strongly acidic medium, its color shifts to red (at pH 2.8); and in an alkaline medium, the yellow hue transitions to blue (at pH 9.6).
    Xylenol blue
  • HY-D2509
    Cy3-PEG1000-SH
    Cy3-PEG1000-SH is a fluorescent labeling reagent that combines Cy3 (HY-D0822) fluorescent dye, polyethylene glycol (PEG) and sulfhydryl (SH) derivatives, and is suitable for molecular coupling. SH is highly reactive and can react with a variety of functional groups (such as maleimide) to form stable thioether bonds.
    Cy3-PEG1000-SH
  • HY-NP163H
    Wheat germ agglutinin-AF750
    Wheat germ agglutinin-AF750 (WGA-AF750) is a plant lectin that contains the fluorescent dye AF750, which can be used to identify carbohydrate chains. Wheat germ agglutinin-AF750 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-AF750
  • HY-D2121A
    Cy3-PEG7-exo-BCN
    Cy3-PEG7-exo-BCN is a dye derivative of Cyanine 3 (Cy3) (HY-D0822) containing 7 PEG units. Cy3-PEG7-exo-BCN contains the lyophilic bidentate macrocyclic ligand BCN, which can further synthesize macrocyclic complexes. In click chemistry, exo-BCN can react with molecules containing azide groups to form stable triazoles in the absence of catalysts.
    Cy3-PEG7-exo-BCN
  • HY-147206E
    Biotin-PEG10000-Alk
    Biotin-PEG10000-Alk 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-PEG10000-Alk 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-PEG10000-Alk
  • HY-D1038
    Disperse orange 31
    Disperse orange 31 is an orange-orange dye commonly used for fiber dyeing.
    Disperse orange 31
  • HY-D1620
    H2TPTBP
    H2TPTBP is a small molecule ion indicator.
    H2TPTBP
  • HY-145725E
    FAM labled Baliforsen sodium
    FAM labled Baliforsen sodiumis a FAM labled Baliforsen sodium.
    FAM labled Baliforsen sodium
  • HY-D2619
    ICG PEG5000 FA
    ICG PEG5000 FA is a fluorescently labeled biomolecule containing Indocyanine green (ICG) (HY-D0711) fluorescent dye, polyethylene glycol (PEG) and Folic acid (FA) (HY-16637). ICG PEG5000 FA is widely used in drug delivery and biomaterial labeling (Ex/Em=785/813 nm).
    ICG PEG5000 FA
Cat. No. Product Name / Synonyms Application Reactivity