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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-N0917
    6''-O-Malonylgenistin
    		99.24%
    6''-O-Malonylgenistin(Malonylgenistin) is an isoflavone derivative.
    6''-O-Malonylgenistin
  • HY-W008292
    Carbostyril 124
    		99.72%
    Carbostyril 124 is a sensitising chromophore. Carbostyril 124 is a reasonably effective organic sensitizer for a proximate bound terbium ion.
    Carbostyril 124
  • HY-D2161A
    AF 594 azide triethylamine
    AF 594 azide (triethylamine) is an azide derivative of the red fluorescent dye AF 594, which has high fluorescence quantum yield and high photostability (maximum absorption wavelength of 586 nm, maximum emission wavelength of 613 nm). AF 594 azide (triethylamine) forms stable adducts by reaction of the azide group with alkynyl derivatives (terminal alkynes and cyclooctyne).
    AF 594 azide triethylamine
  • HY-D1880
    Sulfo-Cy5 hydrazide
    Sulfo-Cy5 hydrazide is a fluorescent dye containing a hydrazide functionality (Ex/Em=646/662 nm).
    Sulfo-Cy5 hydrazide
  • HY-D0165
    Naphthoresorcinol
    		99.60%
    Naphthoresorcinol (1,3-Dihydroxynaphthalene) is a fluorescent dye (λex=330 nm, λem=380 nm) that can react with the NPPD (a tracer) and concentrated HCl and develop a red color. Naphthoresorcinol could be used as a background electrolyte (BGE) to determine the carbohydrates.
    Naphthoresorcinol
  • HY-W011618
    N-(9-Acridinyl)maleimide
    		99.97%
    N-(9-Acridinyl)maleimide is a maleimide type fluorescent thiol reagent. N-(9-Acridinyl)maleimide shows no substantial fluorescence but its coupling products with thiol compounds exhibit strong blue fluorescence. N-(9-Acridinyl)maleimide is used for fluorometrical analysis of cysteine and glutathione.
    N-(9-Acridinyl)maleimide
  • HY-147309
    16-Azidohexadecanoic acid
    		≥98.0%
    16-Azidohexadecanoic acid, a synthetic fatty acid, can be used as a modification marker for nucleotides and a molecular probe for fatty acid metabolism. 16-Azidohexadecanoic acid is a click chemistry reagent, 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.
    16-Azidohexadecanoic acid
  • HY-155640
    5-FAM maleimide
    		98.54%
    5-FAM maleimide is a 5-FAM (HY-66022) derivative. 5-FAM maleimide can be used to label proteins.
    5-FAM maleimide
  • HY-D1254
    Trx-red
    Trx-red (NBL-SS perchlorate) is a red-emitting fluorescent probe derivatized from the nile blue fluorophore. Trx-red is used for selectively imaging thioredoxin (Trx) in live cells and in vivo (λex=615 nm, λem=661 nm).
    Trx-red
  • HY-133876
    4-Di-16-ASP
    		99.76%
    4-Di-16-ASP is a green fluorescent membrane dye. 4-Di-16-ASP is a lipophilic aminostyryl probe with a broad emission spectrum (can be detected with green, orange or even red filters). It is commonly used for neuronal membrane tracing (it diffuses faster than DiO).
    4-Di-16-ASP
  • 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-114907
    4',5'-Dibromofluorescein
    4',5'-Dibromofluorescein (Eosinic acid) is a fluorescein derivative that can used as a ligand for studying of protein properties by spectral analysis.
    4',5'-Dibromofluorescein
  • HY-158082D
    TRITC-dextran, MW 150000
    TRITC-dextran, MW 150000 (Tetramethyl rhodamine isothiocyanate glucan, MW 150000) is a fluorescent dye, with the molecular weight of 150 kD. TRITC-dextran, MW 150000 exhibits an excitation wavelength of 555 nm. TRITC-dextran, MW 150000 is follicular and vessel penetrate, which is dependent on the molecular weight. TRITC-dextran, MW 150000 is utilized in drug delivery for the stability of TRITC over a wide pH range (i.e. pH 2–11) and resistance to photo-bleaching.
    TRITC-dextran, MW 150000
  • HY-154834
    BHQ-1 NHS
    BHQ-1 NHS directly labeled by fluorescently labeled nucleotide.
    BHQ-1 NHS
  • HY-15914
    DHBS
    		99.79%
    DHBS (3, 5-dichloro-2-hydroxybenzenesulfonate) is used in conjunction with 4-aminoantipyrine (4-AAP) (HY-W100990) and hydrogen peroxide (H2O2) for chromogenic quantitation of peroxidase in coupled enzymatic reactions. Component of Trinder reagent for use with peroxidase to measure generation of hydrogen peroxide in automated systems.
    DHBS
  • HY-W038786
    2,4,6-Trimethylphenol
    		99.98%
    2,4,6-Trimethylphenol is a probe compound shown to react mainly with organic matter (3DOM*). 2,4,6-Trimethylphenol is rapidly oxidized by singlet oxygen in aqueous solution.
    2,4,6-Trimethylphenol
  • HY-15562
    HOE 32021
    		99.48%
    HOE 32021 is a marker dye in Hoechst series. Hoechst is A live nuclear marker dye. Hoechst binds to the grooves in the DNA double strand, which tends to be A/ T-rich DNA strand. Although it binds to all nucleic acids, the A/ T-rich double strand DNA significantly enhances fluorescence intensity Therefore,Hoechst dye can be used for living cell labeling. The fluorescence intensity of Hoechst dye increases with the increase of pH of solution.
    HOE 32021
  • HY-41268
    3-Methoxyphenylethylamine
    		99.39%
    3-Methoxyphenylethylamine is an organic compound that is used as an intermediate for pharmaceuticals, dyestuffs, and liquid crystal materials.
    3-Methoxyphenylethylamine
  • HY-D1306
    TAMRA azide, 6-isomer
    TAMRA azide, 6-isomer is an isomer of TAMRA, a xanthene dye with orange emission.
    TAMRA azide, 6-isomer
Cat. No. Product Name / Synonyms Application Reactivity