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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-D2217
    Cy7 tetrazine
    Cy7 tetrazine is a near infrared dye that can be used for in vivo imaging.
    Cy7 tetrazine
  • HY-W097777
    Anisoin
    Anisoin (4,4'-Dimethoxybenzoin) is a pre-chromatographic fluorogenic labelling reagent for (liquid chromatography) analysis of guanidino compounds (Ex/Em = 325/435 nm).
    Anisoin
  • HY-D0315
    Disperse red 74
    Disperse red 74 is a red dye derived from anthraquinone. It is used in plastics, textiles and cosmetics.
    Disperse red 74
  • HY-160269
    DSPE-PEG-Fluor 488,MW 2000
    DSPE-PEG-Fluor 488,MW 2000 is a PEG-dye-lipid conjugate consisting of a DSPE phospholipid and a Fluor 488 dye. DSPE is a phospholipid that spontaneously forms micelles in a water medium, and Fluor 488 is a cyanine dye that is widely used in fluorescence microscopy. Fluor 488 has excitation and emission maxima at 499 nm and 520 nm. Polyethylene glycol lipids are commonly used for the stabilization of lipid nanoparticles.
    DSPE-PEG-Fluor 488,MW 2000
  • HY-119987
    Sudan orange G
    Sudan orange G is an azo dye. Sudan orange G, after enzymatic oxidation, generates oligomers and even polymers through free radical coupling reactions.
    Sudan orange G
  • HY-160485
    G-4'G-7S
    G-4'G-7S is a endogenous metabolite of genistein (HY-14596). G-4'G-7S can be used for the research of estrogenic activity.
    G-4'G-7S
  • HY-D0310
    Fluorescent Brightener 135
    Fluorescent Brightener 135 is an optical brightener dye.
    Fluorescent Brightener 135
  • HY-116157
    Pyranthrone
    Pyranthrone (Pyranthrenedione) is a vat dye.
    Pyranthrone
  • HY-D0027R
    7-Amino-4-methylcoumarin (Standard)
    7-Amino-4-methylcoumarin (Standard) is the analytical standard of 7-Amino-4-methylcoumarin. This product is intended for research and analytical applications. 7-Amino-4-methylcoumarin belongs to the coumarin class, can be isolated from the endophytic fungus Xylaria sp. and has a broad spectrum of antibacterial activity. 7-Amino-4-methylcoumarin is also commonly used as an important laser dye that emits in the blue region, capable of analyzing glycoprotein monosaccharides and N-linked oligosaccharides, and is also utilized in tissue pathology analysis, enzyme activity measurement, and copper ion detection. The excitation wavelength and emission wavelength are 351 nm and 430 nm, respectively.[4]
    7-Amino-4-methylcoumarin (Standard)
  • HY-D0488
    C.I. Pigment orange 36
    C.I. Pigment orange 36 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.
    C.I. Pigment orange 36
  • HY-D0578
    Basic yellow 28
    Basic yellow 28 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.
    Basic yellow 28
  • HY-D0412
    C.I. Acid yellow 48
    C.I. Acid yellow 48 is an acidic yellow dye that can be adsorbed and removed by bentone.
    C.I. Acid yellow 48
  • HY-D0499
    Pigment yellow 73
    Pigment yellow 73 is a disazomethine dye with solid-state fluorescence.a biologically active chemical.
    Pigment yellow 73
  • HY-D2601
    ICG PEG NH2 (MW 3400)
    ICG PEG NH2 (MW 3400) is a polyethylene glycol derivative containing Indocyanine green (ICG) (HY-D0711) fluorescent dye and polyethylene glycol (PEG) and an amino group. The Indocyanine green fluorophore is commonly used in applications such as immunolabeling, nucleic acid labeling, fluorescence microscopy, and flow cytometry. ICG PEG NH2 (MW 3400) can be used for fluorescence imaging, fluorescence tracing and fluorescence labeling (Ex/Em = 785/813 nm).
    ICG PEG NH2 (MW 3400)
  • HY-D2742
    DMT-BH1 amidite
    DMT-BH1 amidite (BHQ-1 DMT amidite) is a true dark quencher with broad absorption curve which covers the visible spectrum with maximum in green to yellow region. It is used for the synthesis of dual labeled oligonucleotide probes for qPCR bearing 5'-quencher DusQ 1 and other FRET applications for multiplexing assays.
    DMT-BH1 amidite
  • HY-W419044A
    Calcein calcium potassium
    Calcein calcium potassium is the calcium potassium salt form of Calcein (HY-D0040). Calcein calcium potassium is a fluorescent dye and self-quenching probe, that can used as an indicator of lipid vesicle leakage, and also as a complexometric indicator for titration of calcium ions with EDTA, and for fluorometric determination of calcium. Calcein calcium potassium can also be used as a model drug for evaluating efficiency and bioavailability of drug delivery systems.
    Calcein calcium potassium
  • HY-D0401
    Direct brown 44
    Direct brown 44 is a good dyeing agent for cotton fabrics.
    Direct brown 44
  • HY-D2844C
    FITC-PEG-FA (MW 3400)
    FITC-PEG-FA (MW 3400) 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-PEG-FA (MW 3400) can be used for fluorescent labeling and imaging.
    FITC-PEG-FA (MW 3400)
  • HY-W879228
    Disulfo-ICG-DBCO disodium
    Disulfo-ICG-DBCO disodium is a double sulfonic acid-modified indocyanine green. Disulfo-ICG-DBCO disodium can react with d-AzAla modified bacteria to detect the bacteria by copper-free click chemistry-mediated photothermal lysis and measurement of ATP bioluminescence.
    Disulfo-ICG-DBCO disodium
  • HY-D2566
    Cy5.5-PEG-DSPE (MW 3400)
    Cy5.5-PEG-DSPE (MW 3400) is a PEG phospholipid with Cy5.5 (HY-D0924) dye used in protein/nucelic acid labeling and fluorescence microscopy. Cy5.5-PEG-DSPE (MW 3400) 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-PEG-DSPE (MW 3400)
Cat. No. Product Name / Synonyms Application Reactivity