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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-D2844C
    FITC-PEG3400-FA
    FITC-PEG3400-FA is a fluorescent dye composed of Folic acid (HY-16637) (FA), polyethylene glycol (PEG) and FITC (HY-66019). Fluorescent dye is linked to PEG and Folic acid through a specific chemical reaction to form a molecule with special properties. FITC-PEG3400-FA can be used for fluorescent labeling and imaging.
    FITC-PEG3400-FA
  • HY-D2328
    Alexa Fluor 680 NHS ester
    Alexa Fluor 680 NHS ester (Alexa Fluor 680 succinimidyl ester) is a near-infrared (NIR) fluorescent dye. NHS esters can be used to label to the primary amines (R-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules (Ex/Em = 679/702 nm).
    Alexa Fluor 680 NHS ester
  • HY-D3467
    Vari Fluor 650 TSA, 200× (same as mIHC kit)
    Vari Fluor 650 TSA, 200× (same as mIHC kit) (VF 650 mIHC) is suitable for multicolor immunohistochemistry experiments and are compatible with the dyes in multicolor immunohistochemistry kits (Ex/Em = 630/650 nm).
    Vari Fluor 650 TSA, 200× (same as mIHC kit)
  • HY-D1690
    sBADA TFA
    sBADA TFA is a potent green fluorescent dye that targets and labels peptidoglycan in the cell walls of live bacteria(Ex/Em = 490/510 nm).
    sBADA TFA
  • HY-D1354
    Azide MegaStokes dye 673
    Azide MegaStokes dye 673 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.
    Azide MegaStokes dye 673
  • HY-151756
    diSulfo-Cy3 alkyne
    diSulfo-Cy3 alkyne is a water-soluble dye and a Click Chemistry reagent containing an alkyne group. Absorbance and emission of the dye are identical to Cy3 fluorophore. diSulfo-Cy3 alkyne can be used for the labeling of proteins, and even intact biological objects in water phase.
    diSulfo-Cy3 alkyne
  • HY-10939
    (-)-15-Deoxyspergualin
    (-)-15-Deoxyspergualin is a potent antitumor agent. (-)-15-Deoxyspergualin shows strong inhibition against mouse leukemia L-1210.
    (-)-15-Deoxyspergualin
  • HY-153324D
    FAM labled PS220 sodium
    FAM labled PS220 sodiumis a FAM labled PS220 sodium.
    FAM labled PS220 sodium
  • HY-D2038
    ATTO 550 alkyne
    ATTO 550 alkyne is a new fluorescent marker based on the Rhodamine structure. It has strong absorption, high fluorescence quantum yield, high thermal stability and photochemical stability, and is suitable for single molecule detection and high-resolution microscopy. ATTO 550 alkyne is an alkyne derivative of ATTO 550 and can be used to label proteins or antibodies.
    ATTO 550 alkyne
  • HY-D1045A
    Dabcyl acid sodium
    Dabcyl acid sodium (DABCYL sodium) is a nonfluorescent chromophore and a quencher. Dabcyl acid sodium can be used as molecular beacon nucleic acid probes to recognize and report the presence of specific nucleic acids in homogeneous solutions.
    Dabcyl acid sodium
  • HY-D2566
    Cy5.5-PEG3400-DSPE
    Cy5.5-PEG3400-DSPE is a PEG phospholipid with Cy5.5 (HY-D0924) dye used in protein/nucelic acid labeling and fluorescence microscopy. Cy5.5-PEG3400-DSPE 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.
    Cy5.5-PEG3400-DSPE
  • HY-NP066
    Erythrina Cristagalli Lectin
    Erythrina Cristagalli Lectin (ECL) is a plant lectin that can be used as a probe to specifically bind biomolecules (such as polysaccharides, peptides, etc.).Erythrina Cristagalli Lectin (ECL) is a biological material or organic compound that can be used in life science research.
    Erythrina Cristagalli Lectin
  • HY-P4777A
    Dabcyl-RGVVNASSRLA-Edans TFA
    Dabcyl-RGVVNASSRLA-Edans (Dabcyl-CMV-Edans) is a fluorogenic substrate for human cytomegalovirus (HCMV) protease.
    Dabcyl-RGVVNASSRLA-Edans TFA
  • HY-P4408
    Ac-Arg-Gly-Lys-AMC
    Ac-Arg-Gly-Lys-AMC is a fluorogenic substrate for the determination of protease activity. Ac-Arg-Gly-Lys-AMC undergoes hydrolysis and releases the fluorescent product 7-amino-4-methylcoumarin (AMC). AMC is fluorescent under UV light and can emit a fluorescent signal.
    Ac-Arg-Gly-Lys-AMC
  • HY-P10932
    pGk13a
    pGk13a is an amphipathic membrane-labeling probe containing an azide group, which can bind to fluorophores. pGk13a enables high-resolution imaging of cell membranes in the ultrastructure expansion microscopy (umExM) technique, facilitating the observation of membrane-associated structures and proteins. pGk13a is applicable to neuronal structure research.
    pGk13a
  • HY-D2844E
    FITC-PEG10000-FA
    FITC-PEG10000-FA is a fluorescent dye composed of Folic acid (HY-16637) (FA), polyethylene glycol (PEG) and FITC (HY-66019). Fluorescent dye is linked to PEG and Folic acid through a specific chemical reaction to form a molecule with special properties. FITC-PEG10000-FA can be used for fluorescent labeling and imaging.
    FITC-PEG10000-FA
  • HY-D2487
    Sulfo Cy5 bis COOH
    Sulfo Cy5 bis COOH is a derivative of Cy5 (HY-D0821) dye containing sulfonate ions. Sulfo Cy5 bis COOH contains carboxyl groups, which can condense ammonia to form covalent bonds.
    Sulfo Cy5 bis COOH
  • HY-D2835
    m-PEG1000-PEI-Cy5
    mPEG-PEI-Cy5 (MW 1000) is a fluorescent dye composed of polyethylene glycol (PEG), FITC (HY-66019) and a Biotin (HY-B0511). mPEG-PEI-Cy5 (MW 1000) can be used for fluorescent labeling and imaging.
    m-PEG1000-PEI-Cy5
  • HY-D3002
    ONOO-/O2- tracker probe
    ONOO-/O2- tracker probe is a dual-responsive near-infrared fluorescent probe. ONOO-/O2- tracker probe will only emit a strong fluorescence signal when both peroxynitrite (ONOO⁻) and superoxide anion (O₂•⁻), the two key reactive oxygen/nitrogen species, are present simultaneously. ONOO-/O2- tracker probe can be used as a biomarker detection tool for drug-induced liver injury (DILI).
    ONOO-/O2- tracker probe
  • HY-D3157
    Photoactive esterase probe
    Photoactive esterase probe is a photoactivatable fluorescent probe for esterase. Photoactive esterase probe is used for the detection and imaging of esterase activity in living cells.
    Photoactive esterase probe
Cat. No. Product Name / Synonyms Application Reactivity