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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-172321
    Etheno-NAADP sodium
    Etheno-NAADP (Nicotinic acid 1,N6-ethenoadenine dinucleotide phosphate) sodium is a fluorescent product of NAADP (HY-103317). Etheno-NAADP sodium could activate Ca2+ release from sea urchin egg homogenates with an EC50 of 5 µM (Ex/Em = 275/410 nm).
    Etheno-NAADP sodium
  • HY-D2598
    Cy7.5-PEG-biotin (MW 5000)
    Cy7.5 HA biotin (MW 5000) is a biotinylated hyaluronic acid labeled with CY7.5 (HY-D0926). Cy7.5 HA biotin (MW 5000) is widely used for cell imaging and in vivo imaging of shallow tissues (Ex/Em = 770/820 nm).
    Cy7.5-PEG-biotin (MW 5000)
  • HY-D2688
    Cy7 HA biotin 10000
    Cy7 HA biotin 10000 is a biotinylated hyaluronic acid labeled with CY7 (HY-D0825). Cy7 HA biotin 10000 is widely used for cell imaging and in vivo imaging of shallow tissues (Ex/Em = 740/770 nm).
    Cy7 HA biotin 10000
  • HY-D2671
    Cy5.5 HA biotin 10000
    Cy5.5 HA biotin 10000 is a biotinylated hyaluronic acid labeled with CY5.5 (HY-D0924). Cy5.5 HA biotin 10000 is widely used for cell imaging and in vivo imaging of shallow tissues (Ex/Em = 680/710 nm).
    Cy5.5 HA biotin 10000
  • HY-D2705
    Cy3 Dextran (MW 2000)
    Cy3 Dextran (MW 2000) is a fluorescent labeling reagent that combines Cy3 (HY-D0822) fluorescent dye and Dextran (HY-112624). The Cy3 fluorophore is commonly used in applications such as immunolabeling, nucleic acid labeling, fluorescence microscopy, and flow cytometry. Dextran has an inhibitory effect on thrombocyte aggregation and coagulation factors and is used as a plasma volume expander (Ex/Em = 550/570 nm).
    Cy3 Dextran (MW 2000)
  • HY-D0648
    Direct red 9
    Direct red 9 is a good dyeing agent for cotton fabrics.
    Direct red 9
  • HY-W800704
    BP Fluor 594 alkyne
    BP Fluor 594 alkyne is a bright, red-fluorescent alkyne-activated probe routinely used for imaging of azide-containing biomolecules. BP Fluor 594 alkyne reacts with azides via a copper-catalyzed click reaction (CuAAC) to form a stable triazole linker.
    BP Fluor 594 alkyne
  • HY-D2796B
    FITC-PEG-OH (MW 5000)
    FITC-PEG-OH (MW 5000) is a fluorescent dye composed of polyethylene glycol (PEG), FITC (HY-66019) and a Hydroxyl group. FITC-PEG-OH (MW 5000) can be used for fluorescent labeling and imaging.
    FITC-PEG-OH (MW 5000)
  • HY-163267
    ZNL0325
    ZNL0325 is a covalent probe based on pyrazolopyrimidine. ZNL0325 features an acrylamide side chain at the C3 position, which is capable of forming covalent bonds with multiple kinases that possess a cysteine at the αD-1 position, including BTK, EGFR, BLK, and JAK3. ZNL0325 can be used in the research of creating structurally distinct covalent kinase inhibitors.
    ZNL0325
  • HY-D2604
    ICG PEG N3 (MW 1000)
    ICG PEG N3 (MW 1000) is a Indocyanine green (ICG) (HY-D0711)-azide fluorescent dye used to label for protein and nucleic acid. ICG PEG N3 (MW 1000) 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 1000)
  • HY-D0603
    Pigment Yellow 183
    Pigment Yellow 183 is a disazomethine dye with solid-state fluorescence.a biologically active chemical.
    Pigment Yellow 183
  • HY-D0323
    Vat Black 27
    Vat Black 27 is a black dye.
    Vat Black 27
  • HY-D1235
    Fluorescent brightener 210
    Fluorescent brightener 210 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.
    Fluorescent brightener 210
  • HY-D2612
    ICG PEG DSPE (MW 5000)
    ICG PEG DSPE (MW 5000) is a PEG phospholipid with Indocyanine green (ICG) (HY-D0711) dye used in protein/nucelic acid labeling and fluorescence microscopy. ICG PEG DSPE (MW 5000) 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 (Ex/Em = 785/813 nm).
    ICG PEG DSPE (MW 5000)
  • HY-D2616
    ICG PEG DBCO (MW 2000)
    ICG PEG DBCO (MW 2000) is a fluorescent probe containing Indocyanine green (ICG) (HY-D0711) dye. ICG PEG DBCO (MW 2000) contains a DBCO group that can undergo strain-promoted alkyne-azide cycloaddition (SPAAC) with molecules containing Azide groups (Ex/Em = 785/813 nm).
    ICG PEG DBCO (MW 2000)
  • HY-D2854C
    FITC-PEG-CL (MW 3400)
    FITC-PEG-CL (MW 3400) is a fluorescent dye composed of FITC (HY-66019), PEG and chlorine (-Cl). The chlorine group is an electrophilic active group that can be used for nucleophilic substitution reactions and facilitate subsequent chemical modification (Ex/Em = 488/525 nm).
    FITC-PEG-CL (MW 3400)
  • HY-D0407
    C.I. Acid black 94
    C.I. Acid black 94 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.
    C.I. Acid black 94
  • HY-D0639
    Reactive Brown 23
    Reactive Brown 23 is common textile dyes that can be adsorbed onto single-walled carbon nanotubes (SWCNTs) through electrostatic interactions, allowing the separation of residual dyes.
    Reactive Brown 23
  • HY-172163B
    FITC-dextran sulfate (MW 40kDa)
    FITC-dextran sulfate, 40kDa is a sodium dextran sulfate labeled with FITC, with an average molecular weight of 40 kDa.
    FITC-dextran sulfate (MW 40kDa)
  • HY-D0482
    C.I. Direct blue 80
    C.I. Direct blue 80 is a good dyeing agent for cotton fabrics.
    C.I. Direct blue 80
Cat. No. Product Name / Synonyms Application Reactivity