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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-D2856B
    FITC-PEG3400-Br
    FITC-PEG3400-Br 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-PEG3400-Br
  • HY-D2634
    Cy3 HA MA (MW 100000)
    Cy3 HA MA (MW 100000) is a hyaluronic acid methacrylate labeled with CY3 (HY-D0822). Cy3 HA MA (MW 100000) is widely used in the fields of biolabeling and imaging, drug delivery and tissue engineering and regenerative medicine (Ex/Em = 550/570 nm).
    Cy3 HA MA (MW 100000)
  • HY-159841A
    Filricianine sodium
    Filricianine sodium is an hydrophilic fluorochrome. It can be conjugated to antibody with higher D/P ratio and widely used applications including western blotting, microscopy, flow cytometry, and cell based assays.
    Filricianine sodium
  • HY-D2421
    DEAE-dex-Cy5
    DEAE-dex-Cy5 is a fluorescent labeling reagent that combines Cy5 (HY-D0821) fluorescent dye, Dextran (dex) and Diethylaminoethyl (DEAE). Cy5 is a Cyanine dye (with a long wavelength about 662nm) that can be used for molecular labeling and microscopy imaging. Dex has an inhibitory effect on thrombocyte aggregation and coagulation factors and is used as a plasma volume expander.
    DEAE-dex-Cy5
  • HY-D2737
    DMT-BH2 amidite
    DMT-BH2 amidite (BHQ-2 DMT amidite) is a black quencher dye for the synthesis of dual-labeled oligonucleotide probes for qPCR bearing 5'-quencher. This quencher is ideal for HEX, JOE, ROX, Cyanine5, and other dyes with emissions in the orange and red parts of the spectrum.
    DMT-BH2 amidite
  • HY-D2855
    Heparin-Cy7.5
    Heparin-Cy7.5 is a fluorescent dye composed of CY7.5 (HY-D0926) and heparin. Heparin-CY7.5 is used to study the localization and distribution of heparin in vivo and its interaction with other biomolecules (Ex/Em = 770/820 nm).
    Heparin-Cy7.5
  • HY-D2684
    Cy7 HA MA (MW 50000)
    Cy7 HA MA (MW 50000) is a hyaluronic acid methacrylate labeled with CY7 (HY-D0825). Cy7 HA MA (MW 50000) 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 50000)
  • HY-D2605
    ICG PEG2000 N3
    ICG PEG2000 N3 is a Indocyanine green (ICG) (HY-D0711)-azide fluorescent dye used to label for protein and nucleic acid. ICG PEG2000 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 (Ex/Em=785/813 nm).
    ICG PEG2000 N3
  • HY-D2694
    Cy7.5 HA (MW 100000)
    Cy7.5 HA (MW 100000) is a hyaluronic acid labeled with CY7.5 (HY-D0926). Cy7.5 HA (MW 100000) is widely used for cell imaging and in vivo imaging of shallow tissue (Ex/Em = 770/820 nm).
    Cy7.5 HA (MW 100000)
  • HY-D1277
    Pigment red 21
    Pigment red 21 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.
    Pigment red 21
  • HY-D2428
    OVA-PEG-Cy3
    OVA-PEG-Cy3 is a Cy3 (HY-D0822)-labeled OVA-PEG conjugate. The Cy3 fluorophore is commonly used in applications such as immunolabeling, nucleic acid labeling, fluorescence microscopy, and flow cytometry. The maximum emission wavelength of Cy3 is approximately 562-570 nm. Ovalbumins (OVA), the main protein found in egg whites, have various biological activities such as anticancer, antihypertensive, antibacterial, antioxidant and immunomodulatory activities. Ovalbumins are the most abundant proteins synthesized in progesterone- or estrogen-treated fallopian tubes and are commonly used as markers to study hormone regulation of gene expression in tissues.
    OVA-PEG-Cy3
  • HY-W835383
    Sulfo Cy5.5-COOH
    Sulfo-Cy5.5-COOH is a sulfonated Cy5.5 fluorescent dye containing a sulfonic acid group and a carboxylic acid group. The fluorescence wavelength of Sulfo-Cy5.5-COOH is in the near-infrared region and has strong penetrating power.
    Sulfo Cy5.5-COOH
  • HY-172717
    TAMRA-PEG4-t-butyl ester
    TAMRA-PEG4-t-butyl ester is a TAMRA red-fluorescent dye linker, with excitation/emission maximum 553/575 nm, containing a t-butyl protected carboxyl group which can be deprotected under acidic conditions.
    TAMRA-PEG4-t-butyl ester
  • HY-D2846B
    m-PEG5000-PEI5000-Cy5
    m-PEG5000-PEI5000-Cy5 is a fluorescent dye composed of CY5 (HY-D0821), methoxypolyethylene glycol (mPEG), and polyethyleneimine (PEI). m-PEG5000-PEI5000-Cy5 is used for gene delivery, nanodrug delivery, cell imaging and biosensing and bioanalysis (Ex/Em=633/670 nm).
    m-PEG5000-PEI5000-Cy5
  • HY-D3304
    Cholyl-L-lysine fluorescein disodium
    Cholyl-L-lysine fluorescein disodium is a Fluorescent substrate. Cholyl-L-lysine fluorescein disodium can be used in organoid research.
    Cholyl-L-lysine fluorescein disodium
  • HY-123727
    Acid blue 120
    Acid blue 120 is an azo dye, which can be utilized in textile dyeing, food and pharmaceutical coloring, photosensitizer, sensor and surface modification.
    Acid blue 120
  • HY-101893R
    Dihydrofluorescein diacetate (Standard)
    Dihydrofluorescein diacetate (Standard) is the analytical standard of Dihydrofluorescein diacetate (HY-101893). This product is intended for research and analytical applications. Dihydrofluorescein diacetate is a fluorimetric probe mainly used for oxidative stress measurements, in both cell-free systems and cellular models.
    Dihydrofluorescein diacetate (Standard)
  • HY-D2431
    Galactose-PEG-Cy3
    Galactose-PEG-Cy3 is a Cy3 (HY-D0822) labeled Galactose-PEG conjugate. The Cy3 fluorophore is commonly used in applications such as immunolabeling, nucleic acid labeling, fluorescence microscopy, and flow cytometry. Cy3 has an emission maximum around 562-570 nm. Galactose-PEG improves drug cellular uptake and reduces endosomal degradation, and can be used in drug delivery.
    Galactose-PEG-Cy3
  • HY-D2686
    Cy7 HA biotin 3000
    Cy7 HA biotin 3000 is a biotinylated hyaluronic acid labeled with CY7 (HY-D0825). Cy7 HA biotin 3000 is widely used for cell imaging and in vivo imaging of shallow tissues (Ex/Em = 740/770 nm).
    Cy7 HA biotin 3000
  • HY-167270
    Rhoduline acid
    Rhoduline acid is an acidic compound that can be used for the synthesis of azo dyes.
    Rhoduline acid
Cat. No. Product Name / Synonyms Application Reactivity