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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-D2884D
    RB-PEG-NHS (MW 3400)
    RB-PEG-NHS (MW 3400) (Rhodamine B-PEG-NHS (MW 3400)) is a fluorescent dye composed of Rhodamine B (HY-Y0016), PEG and a hydroxysuccinimide (NHS) group. The NHS group can react with amine-containing groups. RB-PEG-NHS (MW 3400) can be used for fluorescent labeling and imaging (Ex/Em = 546/610 nm).
    RB-PEG-NHS (MW 3400)
  • HY-D1860
    Cy3 alkyne chloride
    Cy3 alkyne chloride is a dye derivative of Cyanine 3 (Cy3) (HY-D0822) containing a sulfonate ion and an alkyne functional group. Cy3 is a fluorescent dye with a fluorescence spectrum typically in the green to orange wavelength range. The alkyne functional group of Cy3 alkyne chloride can react with molecules containing the azide functional group to form covalent bonds. Cy3 alkyne chloride can bind to biological molecules such as proteins and antibodies to track their location and dynamic changes in biological samples.
    Cy3 alkyne chloride
  • HY-D1596
    Cyanine 3.5 chloride
    Cyanine 3.5 (Cy3.5 NHS ester) chloride is an analog of Cy3.5 fluorophore. Cyanine 3.5 chloride is a reactive, red fluorescent dye. Cyanine 3.5 chloride is used for labeling of amino-groups in peptides, proteins, and oligonucleotides. (λex=591 nm, λem=604 nm).
    Cyanine 3.5 chloride
  • HY-D2892E
    Rhodamine-PEG (MW 5000)
    Rhodamine-PEG (MW 5000) a fluorescent PEG derivative composed of Rhodamine B (HY-Y0016) and PEG. Rhodamine-PEG (MW 5000) can be used for fluorescent labeling and imaging (Ex/Em = 546/610 nm).
    Rhodamine-PEG (MW 5000)
  • HY-NP0152
    Wheat Germ Agglutinin (Peroxidase)
    Wheat Germ Agglutinin (WGA) Peroxidase is a plant lectin that can be used as a probe to specifically bind biomolecules (such as polysaccharides, peptides, etc.).Wheat Germ Agglutinin (WGA) Peroxidase is a biological material or organic compound that can be used in life science research.
    Wheat Germ Agglutinin (Peroxidase)
  • HY-D2706
    Cy3 Dextran (MW 3000)
    Cy3 Dextran (MW 3000) is a fluorescent labeling reagent that combines Cy3 (HY-D0822) fluorescent dye and Dextran (HY-112624). The Cy3 fluorophore is commonly used in applications such as immunolabeling, nucleic acid labeling, fluorescence microscopy, and flow cytometry. Dextran has an inhibitory effect on thrombocyte aggregation and coagulation factors and is used as a plasma volume expander (Ex/Em = 550/570 nm).
    Cy3 Dextran (MW 3000)
  • HY-D2177
    AF 555 azide
    AF 555 azide is a fluorescent dye and is the azide of AF 555. It contains an Azide group and can undergo copper-catalyzed azide-alkyne cycloaddition reaction (CuAAc) with molecules containing Alkyne groups. It can also undergo strain-promoted alkyne-azide cycloaddition (SPAAC) reactions with molecules containing DBCO or BCN groups. AF 555 exhibits average excitation wavelengths under green laser and red laser of 510 nm and 610 nm, respectively.
    AF 555 azide
  • HY-W714529
    Digoxigenin-d3
    Digoxigenin-d3 (Lanadigenin-d3) is the deuterium labeled Digoxigenin (HY-B1025). Digoxigenin (DIG) is a steroid. DIG is used for situ hybridization as a labeling molecule probe due to long shelf life and fast detection and high sensitivity of DIG-labeled riboprobes.
    Digoxigenin-d<sub>3</sub>
  • HY-B1741A
    Proflavine dihydrochloride
    Proflavine (3,6-Diaminoacridine) dihydrochloride, an acridine dye, is a DNA intercalating agent and Anti-microbial agent. Proflavine dihydrochloride behaves as a pore blocker for Kir3.2. Proflavine dihydrochloride is a potential lead compound for Kir3.2-associated neurological diseases.
    Proflavine dihydrochloride
  • HY-D1290
    Antheraxanthin
    Antheraxanthin, carotenoid, is a photoprotective pigment found in a chromophyte alga.
    Antheraxanthin
  • HY-D2893D
    RB-PEG-RB (MW 2000)
    RB-PEG-RB (MW 2000) (Rhodamine B-PEG-Rhodamine B (MW 2000)) a fluorescent dye composed of two Rhodamine B (HY-Y0016) and PEG. RB-PEG-RB (MW 2000) can be used for fluorescent labeling and imaging (Ex/Em = 546/610 nm).
    RB-PEG-RB (MW 2000)
  • HY-D0063
    6,7-Diethoxy-4-methylcoumarin
    		98.00%
    6,7-Diethoxy-4-methylcoumarin is a fluorogenic substrate and is also a metabolite of Cordyceps militaris.
    6,7-Diethoxy-4-methylcoumarin
  • HY-D1890
    N-(2-Aminooxyethyl)-7-DCCAm
    N-(2-Aminooxyethyl)-7-DCCAm (Compound 7) is a fluorescent dye, and can be used for protein labeling.
    N-(2-Aminooxyethyl)-7-DCCAm
  • HY-D1406
    L-Biotin-NH-5MP-Br
    L-Biotin-NH-5MP-Br is a biotin-conjugated 5-Methylene pyrrolone (5MP). 5-Methylene pyrrolones (5MPs) are thiol-specific, reversible bioconjugation reagents for cysteine-specific protein modification, that are commonly used for protein bioconjugation.
    L-Biotin-NH-5MP-Br
  • HY-D1950
    ATTO 633
    ATTO 633 is a new type of fluorescent dye with high fluorescence yield, which can be used for most labeling applications, maximum excitation/emission wavelength: 630/651 nm.
    ATTO 633
  • HY-D1674
    Sulforhodamine G
    Sulforhodamine G is a fluorescent stain with broad dynamic ranges. Sulforhodamine G can be used for the research of protein stains.
    Sulforhodamine G
  • HY-151757
    Trisulfo-Cy5-Alkyne
    Trisulfo-Cy5-Alkyne is a click chemistry reagent containing an azide group. Trisulfo-Cy5-Alkyne can participate in copper-catalyzed Click Chemistry reactions. Trisulfo-Cy5-Alkyne is a near infrared (NIR) fluorescent dye.
    Trisulfo-Cy5-Alkyne
  • HY-D2890
    5-TAMRA-NHS
    5-TAMRA-NHS is a fluorescent dye that combines 5-TAMRA (HY-15942) with a hydroxysuccinimide (NHS) group. The NHS group can react with amine-containing groups. 5-TAMRA-NHS can be used for fluorescent labeling and imaging (Ex/Em = 541/567 nm).
    5-TAMRA-NHS
  • HY-D2155
    Texas red-X 4-succinimidyl ester
    Texas red-X 4-succinimidyl ester is a derivative of Texas Red (HY-101878), an amphoteric rhodamine red fluorescent dye. Texas Red is widely used to study neuronal morphology and as a cell type-selective fluorescent marker for astrocytes, both in vivo and in slice preparations.
    Texas red-X 4-succinimidyl ester
  • HY-D1779
    Fura-5F pentapotassium
    Fura-5F pentapotassium is a cell-impermeant fluorescent calcium indicator.
    Fura-5F pentapotassium
Cat. No. Product Name / Synonyms Application Reactivity