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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-D1633A
    4-Methylumbelliferyl-β-D-galactopyranoside 6-sulfate sodium
    		99.92%
    4-Methylumbelliferyl-β-D-galactopyranoside 6-sulfate sodium is a fluorescent dye. 4-Methylumbelliferyl-β-D-galactopyranoside 6-sulfate sodium can be used in the diagnosis of mucopolysaccharidosis IV A by detecting activity of galactose-6-sulphate sulphatase.
    4-Methylumbelliferyl-β-D-galactopyranoside 6-sulfate sodium
  • HY-158082H
    TRITC-dextran, MW 2000000
    TRITC-dextran, MW 2000000 (Tetramethyl rhodamine isothiocyanate glucan, MW 2000000) is a fluorescent dye, with the molecular weight of 2000 kD. TRITC-dextran, MW 2000000 exhibits an excitation wavelength of 555 nm. TRITC-dextran, MW 2000000 is follicular and vessel penetrate, which is dependent on the molecular weight. TRITC-dextran, MW 2000000 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 2000000
  • HY-D1323
    Cyanine5.5 maleimide chloride
    		98.09%
    Cyanine5.5 maleimide chloride is a CY dye. CY, short for Cyanine, is a compound consisting of two nitrogen atoms connected by an odd number of methyl units. Cyanine compounds have the characteristics of long wavelength, adjustable absorption and emission, high extinction coefficient, good water solubility and relatively simple synthesis. CY dyes are of en used for the labeling of proteins, antibodies and small molecular compounds. For the labeling of protein antibodies, the combination can be completed through a simple mixing reaction. Below, we introduce the labeling method of protein antibody labeling, which has certain reference significance.
    Cyanine5.5 maleimide chloride
  • HY-154834
    BHQ-1 NHS
    BHQ-1 NHS directly labeled by fluorescently labeled nucleotide.
    BHQ-1 NHS
  • HY-110334
    FFN 206 dihydrochloride
    		99.45%
    FFN 206 dihydrochloride, a fluorescent probe, is used as an excellent Vesicular Monoamine Transporter 2 (VMAT2) substrate with an apparent Km of 1.16 μM. FFN 206 dihydrochloride is capable of detecting VMAT2 activity in intact cells using fluorescence microscopy, with subcellular localization to VMAT2-expressing acidic compartments without apparent labeling of other organelles.
    FFN 206 dihydrochloride
  • 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-15939
    6-FAM SE
    		98.08%
    6-FAM SE (6-carboxyfluorescein succinimidyl ester) is a fluorescent labeling reagent. 6-FAM SE is used for oligonucleotide labeling and DNA sequencing.
    6-FAM SE
  • HY-D2875
    5-FITC tyramide
    		Chemical
    5-FITC tyramide is a green fluorescent dye composed of FITC (HY-66019) and tyramide (Ex=488 nm, Em=525 nm). 5-FITC tyramide is utilized as reporter fluorescent substrate of horseradish peroxidase (HRP)-catalyzed deposition for tyramide signal amplification (TSA). 5-FITC tyramide can be used for multiplex immunohistochemistry (mIHC).
    5-FITC tyramide
  • HY-15627
    Hoechst 33342 analog
    		98.16%
    Hoechst 33342 analog 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.
    Hoechst 33342 analog
  • HY-20794
    8-Hydroxyjulolidine
    		99.08%
    8-Hydroxyjulolidine is a chromophore moiety of a fluorescent probe for the detection of weak acid ions. 8-Hydroxyjulolidine can be used to synthesize the salicylaldehyde derivative 9-formyl-8-hydroxyjulolidine, which exhibits sensitive detection ability to pH changes of hydrogen sulfide and silicate in aqueous solution.
    8-Hydroxyjulolidine
  • HY-D0022A
    6-Aminofluorescein
    		98.84%
    6-Aminofluorescein (6-AF) is a fluorescent labeling reagent. 6-Aminofluorescein can be used to label fullerene-based liposome nanostructures termed ‘buckysomes′ (Ex/Em = 490/515 nm).
    6-Aminofluorescein
  • 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
  • HY-W015996
    4-Nitrophenyl-N-acetyl-α-D-galactosaminide
    		99.92%
    4-Nitrophenyl-N-acetyl-α-D-galactosaminide (pNP-GalNAc) can be used as a chromogenic substrate for N-acetyl-D-galactosaminase. 4-Nitrophenyl-N-acetyl-α-D-galactosaminide is cleaved by N-acetyl-D-galactosaminase to generate a yellow solution. The enzyme activity is quantitatively determined by absorbance detection.
    4-Nitrophenyl-N-acetyl-α-D-galactosaminide
  • HY-D2346
    HBmito Crimson
    HBmito Crimson is a deep red fluorescent probe (λex: 658 nm, λem: 678 nm) for the inner mitochondrial membrane. HBmito Crimson is a cell membrane-permeable probe with high selectivity for the mitochondrial inner membrane, suitable for specific fluorescence staining of the inner mitochondrial membrane in living cells. HBmito Crimson has high photostability and brightness, suitable for long-term dynamic fluorescence imaging.
    HBmito Crimson
  • HY-155640
    5-FAM maleimide
    		98.54%
    Maleimide-5’FAM is a fluorescein. Maleimide-5’FAM can be used for labeling non-transduced cells.
    5-FAM maleimide
  • HY-D2865
    Celltrack Deep Red
    Celltrack Deep Red is a fluorescent dye with a fluorescence signal that can be maintained for at least 72 h and has good stability. Celltrack Deep Red can be used for cell tracing and multi-generation cell movement tracking. Within a cell population, Celltrack Deep Red is only transferred to daughter cells and not to neighboring cells (Ex/Em = 630/650 nm).
    Celltrack Deep Red
  • HY-W753658
    Coppersensor-3
    Coppersensor-3 (CS3) is a bright small-molecule fluorescent probe for selective Cu(I) detection. Coppersensor-3 is selective and sensitive enough to image labile copper pools in living cells at endogenous, basal levels. Coppersensor-3 can be used for the cell biology of copper research.
    Coppersensor-3
  • HY-D1053
    CY7-N3
    CY7-N3 (Sulfo-Cyanine7-N3) is a water-soluble NIR dye azide for Click Chemistry. 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.
    CY7-N3
  • HY-D1030
    Fluorescein Biotin
    Fluorescein Biotin is used as an alternative to radioactive biotin for detecting and quantitating biotin-binding sites by either fluorescence or absorbance; the the fluorescence or absorbance of Fluorescein Biotin is quenched, upon binding to avidin or streptavidin.
    Fluorescein Biotin
  • HY-101876
    Rhodamine 800
    		99.72%
    Rhodamine dyes are membrane-permeable cationic fluorescent probes that specifically recognize mitochondrial membrane potentials, thereby attaching to mitochondria and producing bright fluorescence, and at certain concentrations, rhodamine dyes have low toxicity to cells, so they are commonly used to detect mitochondria in animal cells, plant cells, and microorganisms.
    Rhodamine 800
Cat. No. Product Name / Synonyms Application Reactivity