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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-D2801
    FITC-PEG-NHS (MW 400)
    FITC-PEG-NHS (MW 400) is a fluorescent dye composed of polyethylene glycol (PEG), FITC (HY-66019) and a hydroxysuccinimide (NHS) group. The NHS group can react with amine-containing groups. FITC-PEG-NHS (MW 400) can be used for fluorescent labeling and imaging.
    FITC-PEG-NHS (MW 400)
  • HY-121075R
    Alizarin complexone (Standard)
    Alizarin complexone (Standard) is the analytical standard of Alizarin complexone (HY-121075). This product is intended for research and analytical applications. Alizarin complexone is a calcium-binding fluorescent dye. Alizarin complexone stains mineralized areas of bone by binding to calcium crystals. Alizarin complexone inhibits the reverse transcriptase activity of RAV-2, HIV-1, and RSV with IC50 values of 3.8 μg/mL, 45 μg/mL, and 100 μg/mL, respectively. Alizarin complexone exhibits antiviral activity against HIV-1 and RSV. Alizarin complexone delays RSV-induced tumor induction in chickens.
    Alizarin complexone (Standard)
  • HY-169754
    BP Fluor 350 NHS ester
    BP Fluor 350 NHS ester is an amine reactive, water soluble, blue emitting dye used to specifically and efficiently modify primary amines at pH 7-9 to form stable covalent amide bonds.
    BP Fluor 350 NHS ester
  • HY-D0346
    Disperse Blue 85
    Disperse Blue 85 is a blue dye commonly used for fiber dyeing.
    Disperse Blue 85
  • HY-D0301
    Vat-brown-3
    Vat-brown-3 is a brown dye.
    Vat-brown-3
  • HY-W800768
    BP Fluor 350 Azide Plus
    BP Fluor 350 Azide Plus is a fluroescent agent with a terminal azide group. The fluroescent compound has a max absorption at 340 nm and emission at 440 nm. BP Fluor 350 Azide Plus is designed with a copper-chelating system within its structure, enabling the formation of strong, active copper complexes that act as both reactant and catalyst in CuAAC reactions.
    BP Fluor 350 Azide Plus
  • HY-D1374
    Sulfo-Cy5 carboxylic acid potassium
    Sulfo-Cy5 carboxylic acid potassium is a water-soluble, inactive Cy5 carboxylic acid.
    Sulfo-Cy5 carboxylic acid potassium
  • HY-D0398
    Acid red 42
    Acid red 42 is an acid dye that can be decolorized when aluminum sulfate is used as a coagulant.
    Acid red 42
  • HY-D0329
    Direct Blue 78
    Direct Blue 78 is a good dyeing agent for cotton fabrics.
    Direct Blue 78
  • HY-126395R
    Patent Blue V calcium salt (Standard)
    Patent Blue V (calcium salt) (Standard) is the analytical standard of Patent Blue V (calcium salt). This product is intended for research and analytical applications. Patent Blue V has been widely used in sentinel lymph node mapping. Patent Blue V is also a food coloring agent and an alternative dye for trypan blue (TB) in descemet membrane endothelial keratoplasty (DMEK).
    Patent Blue V calcium salt (Standard)
  • HY-D2608
    ICG PEG N3 (MW 10000)
    ICG PEG N3 (MW 10000) is a Indocyanine green (ICG) (HY-D0711)-azide fluorescent dye used to label for protein and nucleic acid. ICG PEG N3 (MW 10000) 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 (Ex/Em = 785/813 nm).
    ICG PEG N3 (MW 10000)
  • HY-D2798C
    FITC-PEG-SH (MW 10000)
    FITC-PEG-SH (MW 10000) is a fluorescent dye composed of polyethylene glycol (PEG), FITC (HY-66019) and a sulfhydryl (SH). FITC-PEG-SH (MW 10000) can be used for fluorescent labeling and imaging.
    FITC-PEG-SH (MW 10000)
  • HY-D1215
    Pigment Red 31
    Pigment Red 31 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 31
  • HY-D2652
    Cy5 HA MA (MW 100000)
    Cy5 HA MA (MW 100000) is a hyaluronic acid methacrylate labeled with CY5 (HY-D0821). Cy5 HA MA (MW 100000) is widely used in the fields of biolabeling and imaging, drug delivery and tissue engineering and regenerative medicine (Ex/Em = 633/670 nm).
    Cy5 HA MA (MW 100000)
  • HY-D2680
    Cy7 HA (MW 200000)
    Cy7 HA (MW 200000) is a hyaluronic acid labeled with CY7 (HY-D0825). Cy7 HA (MW 200000) is widely used for cell imaging and in vivo imaging of shallow tissue (Ex/Em = 740/770 nm).
    Cy7 HA (MW 200000)
  • HY-D2541
    Cy5-PEG-DSPE (MW 1000)
    Cy5-PEG-DSPE (MW 1000) is a PEG phospholipid with Cy5 (HY-D0821) dye used in protein/nucelic acid labeling and fluorescence microscopy. Cy5-PEG-DSPE (MW 1000) can self-assemble in aqueous solution to form micelles/lipid bilayer and used to prepare liposomes or nanoparticles for nutrients delivery such as mRNA or DNA vaccine.
    Cy5-PEG-DSPE (MW 1000)
  • HY-D0382
    Disperse Orange 30
    Disperse Orange 30 is an orange-orange dye commonly used for fiber dyeing.
    Disperse Orange 30
  • HY-D0101A
    Fluorescein-diphosphat ammonium
    Fluorescein-diphosphat (ammonium) is a multifunctional dye. Dyes are important tools in biological experiments. They can help researchers observe and analyze cell structures, track biomolecules, evaluate cell functions, distinguish cell types, detect biomolecules, study tissue pathology and monitor microorganisms. Their applications range from basic scientific research to clinical A wide range of diagnostics. Dyes are also widely used in traditional fields such as textile dyeing, as well as in emerging fields such as functional textile processing, food pigments and dye-sensitized solar cells.
    Fluorescein-diphosphat ammonium
  • HY-D2764
    Difluorocarboxyfluorescein cadaverine, 5-isomer
    Difluorocarboxyfluorescein cadaverine, 5-isomer is a carbonyl reactive building block used to modify carboxylic groups in the presence of activators (e.g. EDC, or DCC) or activated esters (e.g. NHS esters) through a stable amide bond.
    Difluorocarboxyfluorescein cadaverine, 5-isomer
  • HY-D2498
    Cy7 maleimide
    Cy7 maleimide is a fluorescent dye containing a Maleimide (HY-W007324) functional group. Maleimide can be used to label thiol groups on antibodies, proteins and peptides.
    Cy7 maleimide
Cat. No. Product Name / Synonyms Application Reactivity