2. Signaling Pathways
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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-180493
    p-DNSB
    p-DNSB is a bridged compound. p-DNSB shows fluorescence properties (wavelengths in Diethylether: 416 nm (absorption); 574 nm (emission)).
    p-DNSB
  • HY-D2675
    Cy7 HA (MW 10000)
    Cy7 HA (MW 10000) is a hyaluronic acid labeled with CY7 (HY-D0825). Cy7 HA (MW 10000) is widely used for cell imaging and in vivo imaging of shallow tissue (Ex/Em = 740/770 nm).
    Cy7 HA (MW 10000)
  • HY-D2534
    Cy5-PEG3400-N3
    Cy5-PEG3400-N3 is a Cy5 (HY-D0821)-azide fluorescent dye used to label for protein and nucleic acid. Cy5-PEG3400-N3 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.
    Cy5-PEG3400-N3
  • HY-N15829
    Cholyl-Lys-fluorescein sodium
    Cholyl-Lys-fluorescein sodium is a fluorescein-labeled bile acid analog. Cholyl-Lys-fluorescein sodium mimics the physiological hepatobiliary properties of glycocholic acid. Cholyl-Lys-fluorescein sodium is efficiently taken up by the liver and rapidly excreted into bile in intact form in rats. Cholyl-Lys-fluorescein sodium can serve as a liver function assessment agent, bile salt transport probe, and liver-targeted carrier.
    Cholyl-Lys-fluorescein sodium
  • HY-183137
    Neotetrazolium chloride
    Neotetrazolium chloride is a photoreducible tetrazolium dye. Neotetrazolium chloride undergoes photoreduction to form a stable red monoformazan via a transient tetrazolinyl radical-tetrazolium intermediate upon UV exposure. Neotetrazolium chloride can be as a UV dosimeter.
    Neotetrazolium chloride
  • HY-W800700
    BP Fluor 488 azide
    BP Fluor 488 Azide is a multifunctional dye. Dyes are important tools in biological experiments, helping researchers observe and analyze cell structures, track biomolecules, evaluate cell functions, distinguish cell types, detect biomolecules, study tissue pathology, and monitor microorganisms. Their applications cover a wide range of fields from basic scientific research to clinical diagnosis. Dyes are also widely used in traditional fields such as textile dyeing, as well as emerging fields such as functional textile processing, food pigments, and dye-sensitized solar cells.
    BP Fluor 488 azide
  • HY-124324
    4-Nitrophenyl β-D-cellotrioside
    4-Nitrophenyl β-D-cellotrioside (p-Nitopheyl β-D-cellotioside) is a chromogenic substrate for endoglucanases and cellulose biohydrolases. As a fluorescent dye, nitrophenyl β-D-Cellotrioside can be hydrolyzed by enzymes to release 4-nitrophenol, producing a yellow color. The activity of the enzyme can be quantitatively analyzed by monitoring the change in absorbance at 405 nm.
    4-Nitrophenyl β-D-cellotrioside
  • HY-D2262
    BODIPY-cholesterol conjugate-2
    BODIPY-cholesterol conjugate-2 (compound 6) is a BODIPY-cholesterol conjugate. BODIPY-cholesterol conjugate-2 is a useful probe for simultaneous visualization of intracellular cholesterol pools and for monitoring cholesterol efflux from cells to extracellular acceptors. (λex=589 nm, λem=638 nm).
    BODIPY-cholesterol conjugate-2
  • HY-D0486
    C.I. Pigment violet 32
    C.I. Pigment violet 32 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.
    C.I. Pigment violet 32
  • HY-D0442
    C.I. Pigment red 14
    C.I. Pigment red 14 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.
    C.I. Pigment red 14
  • HY-D0697
    Pigment red 95
    Pigment red 95 is a commonly used commercial dye for bulk coloring of plastics and synthetic fibers and for surface coatings such as paints and inks.
    Pigment red 95
  • HY-D0434
    C.I. Acid blue 40 sodium salt
    C.I. Acid blue 40 sodium salt is an acidic blue dye that can be adsorbed and removed by bentone.
    C.I. Acid blue 40 sodium salt
  • HY-W927359
    Fluorescein hydrazide (3,6-Dihydroxyxanthane)
    Fluorescein hydrazide (3,6-Dihydroxyxanthane) is a fluorescein dye that can be used for the fluorophotometric determination of hydrogen peroxide (H2O2) and other reactive oxygen species (ROS).
    Fluorescein hydrazide (3,6-Dihydroxyxanthane)
  • HY-W800696
    BP Fluor 430 azide
    BP Fluor 430 Azide is a water-soluble, green-fluorescent, azide-activated probe that reacts with terminal alkynes via a copper-catalyzed click reaction (CuAAC). It also reacts with strained cyclooctyne via a copper-free click chemistry reaction to form a stable triazole and does not require a Cu-catalyst or elevated temperatures. BP Fluor 430 is a bright, photostable, green-fluorescent probe with excitation near its absorption maximum at 432 nm and emission maximum at 539 nm. This probe is water soluble and pH-insensitive from pH 4 to pH 10. A next generation probe, BP Fluor 430 Picolyl Azide, is also available for detection of low abundance alkyne-tagged biomolecules.
    BP Fluor 430 azide
  • HY-D0233S
    Leucocrystal violet-d6
    Leucocrystal violet-d6 is the deuterium labeled Leucocrystal violet (HY-D0233). Leucocrystal violet is a cationic triarylmethane dye. Leucocrystal violet generates a colored purple product in the presence of hydrogen peroxide and horseradish peroxidase, or when oxidized by periodate under the catalysis of horseradish peroxidase. Leucocrystal violet serves as a chromogenic reagent for the determination of submicrogram-level hydrogen peroxide, with no interference from tryptophan, persulfate or chromate. Leucocrystal violet reacts with blood to produce a purple/violet color in the presence of hydrogen peroxide; it forms a very weak fluorophore when acting with whole blood in an unbuffered solution, with a maximum absorption wavelength of 630 nm and a maximum fluorescence emission wavelength of 665 nm upon excitation at 630 nm. Leucocrystal violet is widely used for staining blood residues on porous and non-porous materials.
    Leucocrystal violet-d<sub>6</sub>
  • HY-W011422
    2,6-Dibromo-4-(chloroimino)cyclohexa-2,5-dienone
    2,6-Dibromo-4-(chloroimino)cyclohexa-2,5-dienone (NSC 528) is a colorimetric dye used for the detection of phenolic compounds. 2,6-Dibromo-4-(chloroimino)cyclohexa-2,5-dienone reacts with phenolic compounds at a pH of about 9.4 to produce an indigo dye. 2,6-Dibromo-4-(chloroimino)cyclohexa-2,5-dienone has been used as a Gibbs reagent for the colorimetric detection of phenolic compounds. 2,6-Dibromo-4-(chloroimino)cyclohexa-2,5-dienone has also been used in a colorimetric reaction for the quantitative colorimetric detection of aflatoxins, turning the colorless aflatoxins green with an absorption band at 673 nm.
    2,6-Dibromo-4-(chloroimino)cyclohexa-2,5-dienone
  • HY-W344938R
    C.I. Acid yellow 3 (Standard)
    C.I. Acid yellow 3 (Standard) is the analytical standard of C.I. Acid yellow 3. This product is intended for research and analytical applications. C.I. Acid yellow 3 is an anionic quinolinone dye that is commonly used as a food additive, but also in the cosmetic and pharmaceutical industries.
    C.I. Acid yellow 3 (Standard)
  • HY-D2559
    Cy5.5-PEG10000-SH
    Cy5.5-PEG10000-SH is a fluorescent labeling reagent that combines Cy5.5 (HY-D0924) 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.
    Cy5.5-PEG10000-SH
  • HY-D0341
    Disperse Red 11
    Disperse Red 11 is a red dye derived from anthraquinone. It is used in plastics, textiles and cosmetics.
    Disperse Red 11
  • HY-D0508
    C.I. Acid red 138
    C.I. Acid red 138 is an acid red dye that can be adsorbed and removed by bentone clay.
    C.I. Acid red 138
Cat. No. Product Name / Synonyms Application Reactivity