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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-D0058
    3,3'-Dipropylthiacarbocyanine iodide
    3,3'-Dipropylthiacarbocyanine (iodide) 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.
    3,3'-Dipropylthiacarbocyanine iodide
  • HY-W775174
    Citrus red 2
    		99.57%
    Citrus red 2 (CI Solvent red 80) is a synthetic dye with coloring power and antioxidant activity. Citrus red 2 can be used in food and cosmetics to provide a bright color to the product. Citrus red 2 is also used as a reference substance for testing and analysis in certain situations.
    Citrus red 2
  • HY-D1821
    Vari Fluor 750 Carboxylic acid（free acid）
    Vari Fluor 750 Carboxylic acid (VF 750 Carboxylic acid) free acid is a carboxylic acid derivative of Vari Fluor. Vari Fluor carboxylic acid derivatives are unactivated labeled fluorescent dyes for protein, antibody, and polysaccharide labeling that require carboxylic acid activation for use.
    Vari Fluor 750 Carboxylic acid（free acid）
  • HY-W748361
    Sulfo-Cy3(Me)COOH sodium
    Sulfo-Cy3(Me)COOH sodium is a derivative of Cy3 (Cyanine3) (HY-D0822) dye containing sulfonate ions. Trisulfo-Cy3-acid disodium contains sulfonate ions and has improved water solubility.
    Sulfo-Cy3(Me)COOH sodium
  • HY-D1158
    HKOCl-4m
    		98.27%
    HKOCl-4m is a selective and mitochondria-targeting rhodol-based fluorescent probe for monitoring mitochondrial hypochlorous acid (HOCl).
    HKOCl-4m
  • HY-D1195
    Vat Blue 2
    Vat Blue 2, a indigo (HY-N0335) derivative, is a dark blue 5,5'-dibromo-4,4'-dichloroindigo dye.
    Vat Blue 2
  • HY-149203A
    MQA-P TFA
    MQA-P is a multifunctional near-infrared (NIR) fluorescent probe that simultaneously detects ONOO-, viscosity, and polarity within mitochondria. MQA-P exhibits significant response to ONOO-, λem=645 nm; and NIR channel at λem>704 nm Medium is highly sensitive to viscosity/polarity. MQA-P possesses excited-state intramolecular charge transfer (ESICT) properties that are highly sensitive to polarity by designing the N,N-dimethylamino group as the electron donor and the quinoline cation unit as the electron acceptor. MQA-P is used for ferroptosis or cancer diagnosis in vitro and in vivo via dual-channel images.
    MQA-P TFA
  • HY-147104
    Fmoc-Lys(5-FITC)-OH
    Fmoc-Lys(5-FITC)-OH is a marker for polypeptides or proteins. FITC is a fluorescence probe for the labeling of amines. FITC is a pH- and Cu2+-sensitive fluorescence dye.
    Fmoc-Lys(5-FITC)-OH
  • HY-160279
    DSPE-PEG5000-Fluor 647
    DSPE-PEG5000-Fluor 647 is a fluorescent lipid (Ex/Em=648/671 nm) composed of PEG-lipid-dye conjugation. DSPE is a phospholipid. Fluor 647 is a fluorescent dye. DSPE-PEG5000-Fluor 647 can be used to prepare nanoparticles or liposomes with fluorescent signals.
    DSPE-PEG5000-Fluor 647
  • HY-D0167
    NHS-5(6)Carboxyrhodamine
    NHS-5(6)Carboxyrhodamine is a dye used for fluorescence labeling applications, where accurate dye/protein ratios can be obtained under native conditions.
    NHS-5(6)Carboxyrhodamine
  • HY-NP090
    Ulex Europaeus Agglutinin I
    Ulex Europaeus Agglutinin I (UEA I) is a plant lectin that can be used as a probe to specifically bind biomolecules (such as polysaccharides, peptides, etc.).Ulex Europaeus Agglutinin I (UEA I) is a biological material or organic compound that can be used in life science research.
    Ulex Europaeus Agglutinin I
  • HY-D1258
    AC-green
    		98.04%
    AC-green (VDP-green) is a β-allyl carbamate fluorescent probe for specifically imaging vicinal dithiol proteins (VDPs) in living systems (λex/λem=400/475 nm). AC-green can detect the reduced bovine serum albumin (rBSA) with high sensitivity. AC-green displays low toxicity and features high sensitivity, and is suitable for sensing VDPs in living cells and zebrafishes.
    AC-green
  • HY-148835A
    AzGGK TFA
    		99.77%
    AzGGK TFA is an unnatural amino acid. AzGGK TFA is site-specifically incorporated into proteins via genetic-code expansion. AzGGK TFA can be used as a site-specific probe for ubiquitylation and SUMOylation. AzGGK TFA 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.
    AzGGK TFA
  • HY-D2892D
    Rhodamine-PEG2000
    Rhodamine-PEG2000 a fluorescent PEG derivative composed of Rhodamine B (HY-Y0016) and PEG. Rhodamine-PEG2000 can be used for fluorescent labeling and imaging (Ex/Em=546/610 nm).
    Rhodamine-PEG2000
  • HY-W027857
    Coumarin 314
    		98.0%
    Coumarin 314 is a dye which has an intense absorption in the visible and additionally presents a large solvent dependence.
    Coumarin 314
  • HY-145576
    2-Amino-8-oxononanoic acid
    2-Amino-8-oxononanoic acid is an amino acid, incorporation into proteins in E.coli in genetic. 2-Amino-8-oxononanoic acid is efficient in labeling of proteins with different probes with a site-specific manner under a mild condition close to the physiological pH.
    2-Amino-8-oxononanoic acid
  • HY-W540972
    Primulin
    Primulin is a versatile fluorescent dye and bioactive compound widely used in analytical, biological, botanical and virological studies. Primulin acts as a versatile stain that labels plant cell walls and differentiates live and dead spermatozoa via distinct fluorescence patterns. Primulin exhibits strong albumin‑binding capacity. Primulin acts as a retrograde axonal tracer in neurobiological investigations. Primulin and its derivatives inhibit HCV NS3, block dengue virus NS3-mediated ATP hydrolysis, and disrupt HCV replicase assembly.
    Primulin
  • HY-148407
    lucPpy-IN-1
    		99.48%
    lucPpy-IN-1 (compound 9) is an ATP-dependent luciferase from Photinus pyralis (lucPpy) inhibitor with an IC50 value of 4.0 μM. lucPpy-IN-1 can be used for the research of target’s agentgability.
    lucPpy-IN-1
  • HY-D2003
    ATTO 565 biotin
    ATTO 565 biotin is a biotin derivative of ATTO 565 with maximum excitation/emission wavelengths: 564/590 nm.
    ATTO 565 biotin
  • HY-D1699
    PFB-FDG
    		98.19%
    PFB-FDG is a non-fluorescent galactosidase substrate that can be hydrolysed to green fluorescent PFB-F (Ex=485 nm, Em=535 nm). PFB-FDG can be used for the determination of β-galactosidase activity.
    PFB-FDG
Cat. No. Product Name / Synonyms Application Reactivity