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-D0393
    Disperse red 54
    Disperse red 54 is a red dye derived from anthraquinone. It is used in plastics, textiles and cosmetics.
    Disperse red 54
  • HY-D2618
    ICG PEG FA (MW 2000)
    ICG PEG FA (MW 2000) is a fluorescently labeled biomolecule containing Indocyanine green (ICG) (HY-D0711) fluorescent dye, polyethylene glycol (PEG) and Folic acid (FA) (HY-16637). ICG PEG FA (MW 2000) is widely used in drug delivery and biomaterial labeling (Ex/Em = 785/813 nm).
    ICG PEG FA (MW 2000)
  • HY-D2414
    SCOTfluor-89
    SCOTfluor-89 is a small, conjugatable, orthogonal and multi-colored fluorophores for in vivo imaging of cell metabolism.
    SCOTfluor-89
  • HY-D0319
    C.I. Basic Blue 8
    C.I. Basic Blue 8 is a basic dye.
    C.I. Basic Blue 8
  • HY-D0640
    Acid Orange 116
    Acid Orange 116 is an azo dye that can be removed from aqueous solutions by metal ions.
    Acid Orange 116
  • HY-D2562
    Cy5.5-PEG-N3 (MW 5000)
    Cy5.5-PEG-N3 (MW 5000) is a Cy5.5 (HY-D0924)-azide fluorescent dye used to label for protein and nucleic acid. Cy5.5-PEG-N3 (MW 5000) 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.
    Cy5.5-PEG-N3 (MW 5000)
  • HY-D0946
    Azure II
    Azure II is a dye that can be used for nuclear stain.
    Azure II
  • HY-132263
    FAM hydrazide,5-isomer
    FAM hydrazide, 5-isomer is a Fluorescein dye linker containing a hydrazide group. Fluorescein is a universal dye. Hydrazide moieties react with aldehydes to form semi-permanent hydrazone bonds.
    FAM hydrazide,5-isomer
  • HY-D0565
    Disperse blue 291G
    Disperse blue 291G is a blue dye commonly used for fiber dyeing.
    Disperse blue 291G
  • HY-D0533
    Disperse blue 165:1
    Disperse blue 165:1 is a blue dye commonly used for fiber dyeing.
    Disperse blue 165:1
  • HY-D0734
    Pigment yellow 194
    Pigment yellow 194 is a disazomethine dye with solid-state fluorescence.a biologically active chemical.
    Pigment yellow 194
  • HY-D2494
    Sulfo Cy7 bis-NHS ester
    Sulfo Cy7 bis-NHS ester is a derivative of Cy7 (HY-D0825) dye containing sulfonate ions. Sulfo Cy7 bis-NHS ester can be used to label the primary amines (R-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules.
    Sulfo Cy7 bis-NHS ester
  • HY-D2482
    Asante potassium green-1 AM
    Asante potassium green-1 AM (APG-1 AM) is a cell-permeable K+ (potassium) sensitive fluorescent indicator (excitation/emission = 525/545 nm).
    Asante potassium green-1 AM
  • HY-D0390
    Acid green 20
    Acid green 20 is a green dye that can be decolorized by ultrasonic irradiation.
    Acid green 20
  • HY-D2653
    Cy5 HA biotin 3000
    Cy5 HA biotin 3000 is a biotinylated hyaluronic acid labeled with CY5 (HY-D0821). Cy5 HA biotin 3000 is widely used for cell imaging and in vivo imaging of shallow tissues (Ex/Em = 633/670 nm).
    Cy5 HA biotin 3000
  • HY-D0477
    C.I. Acid red 57
    C.I. Acid red 57 is an acid red dye that can be adsorbed and removed by bentone clay.
    C.I. Acid red 57
  • HY-D2685
    Cy7 HA MA (MW 100000)
    Cy7 HA MA (MW 100000) is a hyaluronic acid methacrylate labeled with CY7 (HY-D0825). Cy7 HA MA (MW 100000) is widely used in the fields of biolabeling and imaging, drug delivery and tissue engineering and regenerative medicine (Ex/Em = 740/770 nm).
    Cy7 HA MA (MW 100000)
  • HY-D0150A
    (Z)-Thiazole Orange iodide
    (Z)-Thiazole Orange iodide is an asymmetric cyanine dye whose fluorescence highly depends on the local environment.(Z)-Thiazole Orange iodide is essentially dark in solution; however, its fluorescence increases a thousandfold when (Z)-Thiazole Orange iodide is introduced into double-stranded DNA and RNA (dsDNA or dsRNA). The maximum absorption of Thiazole Orange in complex with DNA is 509 nm, and the maximum emission is 532 nm. Thiazole Orange solution is widely used for determining the percentage of reticulocytes in human peripheral blood with microscopy and flow cytometry.
    (Z)-Thiazole Orange iodide
  • HY-D2531
    Cy5-PEG-SH (MW 5000)
    Cy5-PEG-SH (MW 5000) is a fluorescent labeling reagent that combines Cy5 (HY-D0821) 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-PEG-SH (MW 5000)
  • HY-D2681
    Cy7 HA MA (MW 3000)
    Cy7 HA MA (MW 3000) is a hyaluronic acid methacrylate labeled with CY7 (HY-D0825). Cy7 HA MA (MW 3000) is widely used in the fields of biolabeling and imaging, drug delivery and tissue engineering and regenerative medicine (Ex/Em = 740/770 nm).
    Cy7 HA MA (MW 3000)
Cat. No. Product Name / Synonyms Application Reactivity