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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-D3253
    IR 650 azide
    IR 650 azide is a near-infrared fluorescent probe. The click chemistry reaction handle of IR 650 azide is a terminal azide, which can undergo a 'copper-catalyzed alkyne-azide cycloaddition' reaction. (Ex = 633nm, Em = 647nm)
    IR 650 azide
  • HY-172754
    ICAAc
    ICAAc is a solvatochromic fluorophore with reduced basicity. ICAAc demonstrates significant solvatochromic behavior across solvents of varying polarity, with a large dipole moment difference and low quantum yield in water, making it a tunable solvatochromic fluorophore. ICAAc enables pH sensing via UV-vis/fluorescence detection and in microenvironments including sodium lauryl sulfate micelle Stern layers. ICAAc acts as a supravital cell stain for epifluorescence imaging of live cancer cells.
    ICAAc
  • 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-PEG5000-OH
    RB-PEG5000-OH (Rhodamine B-PEG5000-OH) is a fluorescent dye composed of Rhodamine B (HY-Y0016), PEG and a Hydroxyl group. RB-PEG5000-OH can be used for fluorescent labeling and imaging (Ex/Em=546/610 nm).
    RB-PEG5000-OH
  • HY-139786E
    Cy3 labled Cofirasersen sodium
    Cy3 labled Cofirasersen sodium is a Cy3 labled Cofirasersen sodium.
    Cy3 labled Cofirasersen sodium
  • 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-D3192
    CDy11
    CDy11 is a fluorescent probe and amyloid-binding dye (λex=590 nm; λem=612 nm), with a Ka of 29 μM for Pseudomonas aeruginosa Fap. CDy11 specifically recognizes amyloid fibrils in bacterial biofilms and exhibits significantly enhanced fluorescence upon binding to the target. CDy11 shows no staining effect on amyloid-deficient mutant strains, planktonic cells or protein monomers. CDy11 supports in vivo imaging of Pseudomonas aeruginosa biofilms in mouse implant and corneal infection models. CDy11 is widely used in studies of Staphylococcus aureus biofilm infections, dental caries, and Pseudomonas aeruginosa-associated implant and corneal infections.
    CDy11
  • HY-179073B
    TRITC-Polysucrose 70
    TRITC-Polysucrose 70 is TRITC-labeled Polysucrose 70 (HY-131960A). Polysucrose 70 is a high molecular weight branched polysaccharide polymer. Polysucrose 70 is a copolymer of sucrose and epichlorohydrin and can be used for cell separation. TRITC-Polysucrose 70 is mainly used for permeability and microcirculation studies (Ex/Em = 544/570 nm).
    TRITC-Polysucrose 70
  • HY-132592E
    Cy3 labled Suvodirsen sodium
    Cy3 labled Suvodirsen sodium is a Cy3 labled Suvodirsen sodium.
    Cy3 labled Suvodirsen sodium
  • HY-147206C
    Biotin-PEG3400-Alk
    Biotin-PEG3400-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-PEG3400-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-PEG3400-Alk
  • 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-N16311
    18:0 Sulfo-cyanine 5 PE ammonium
    18:0 Sulfo-cyanine 5 PE ammonium is a fluorescent lipid that can be used to visualize cell membranes (Ex/Em = 650/670 nm).
    18:0 Sulfo-cyanine 5 PE ammonium
  • 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
Cat. No. Product Name / Synonyms Application Reactivity