2. Signaling Pathways
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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-D1894
    5-Br-PAPS
    5-Br-PAPS is a highly specific Zn2+ metallochromic indicator. 5-Br-PAPS is used in assays for measuring free Zn2+ by forming a deeply colored red Zn2+ complex.
    5-Br-PAPS
  • HY-D0683
    Direct yellow 28
    Direct yellow 28 is a good dyeing agent for cotton fabrics.
    Direct yellow 28
  • HY-D0388
    Acid Brown 5
    Acid Brown 5 is a brown dye whose staining effects can be removed by the electrocoagulation (EC) process.
    Acid Brown 5
  • HY-172284
    6-TAMRA cadaverine
    6-TAMRA cadaverine has achieved prominence as a dye for oligonucleotide labeling and automated DNA sequencing applications. The amino group (NH2) is reactive with carboxylic acids, activated NHS esters, carbonyls (ketone, aldehyde), etc.
    6-TAMRA cadaverine
  • HY-D2520
    Cy3-PEG-biotin (MW 5000)
    Cy3-PEG-biotin (MW 5000) is a polyethylene glycol derivative containing Cy3 (HY-D0822) fluorescent dye and polyethylene glycol (PEG) and a Biotin. Biotin can bind with high affinity to streptavidin or avidin. Cy3-PEG-biotin (MW 5000) plays an important role in the specific capture and detection of biomolecules.
    Cy3-PEG-biotin (MW 5000)
  • HY-D0387
    Pigment Yellow 93
    Pigment Yellow 93 is a disazomethine dye with solid-state fluorescence.a biologically active chemical.
    Pigment Yellow 93
  • HY-D2623
    Cy3 HA (MW 7000)
    Cy3 HA (MW 7000) is a hyaluronic acid labeled with CY3 (HY-D0822). Cy3 HA (MW 7000) is widely used for cell imaging and in vivo imaging of shallow tissue (Ex/Em = 550/570 nm).
    Cy3 HA (MW 7000)
  • HY-D0451
    C.I. Direct orange 102
    C.I. Direct orange 102 is a good dyeing agent for cotton fabrics.
    C.I. Direct orange 102
  • HY-D2443
    AF594 DBCO
    AF594 DBCO is a fluorescent labeling reagent that combines AF594 red fluorescent dye and DBCO (dibenzocyclooctyne). DBCO is a commonly used chemical biomarker group. AF594 DBCO (Excitation wavelength about 590 nm, emission wavelength about 617 nm) can be used to label proteins, cells and other biomolecules for fluorescence imaging and flow cytometry detection.
    AF594 DBCO
  • HY-D2422A
    Cy5.5-Paclitaxel
    Cy5.5-Paclitaxel is a Cy5.5 (HY-D0821) labeled Paclitaxel (HY-B0015).
    Cy5.5-Paclitaxel
  • HY-D2667
    Cy5.5 HA MA (MW 50000)
    Cy5.5 HA MA (MW 50000) is a hyaluronic acid methacrylate labeled with CY5.5 (HY-D0924). Cy5.5 HA MA (MW 50000) is widely used in the fields of biolabeling and imaging, drug delivery and tissue engineering and regenerative medicine (Ex/Em = 680/710 nm).
    Cy5.5 HA MA (MW 50000)
  • HY-D2697
    Cy7.5 HA MA (MW 3000)
    Cy7.5 HA MA (MW 3000) is a hyaluronic acid methacrylate labeled with CY7.5 (HY-D0926). Cy7.5 HA MA (MW 3000) is widely used in the fields of biolabeling and imaging, drug delivery and tissue engineering and regenerative medicine (Ex/Em = 770/820 nm).
    Cy7.5 HA MA (MW 3000)
  • HY-W800807
    R6G azide, 5-isomer
    R6G azide, 5-isomer is a xanthene dye with a terminal azide. The azide group can react with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage.
    R6G azide, 5-isomer
  • HY-D0542
    Disperse orange 25
    Disperse orange 25 is an orange-orange dye commonly used for fiber dyeing.
    Disperse orange 25
  • HY-176031
    Fluo-2 potassium
    Fluo-2 potassium is a cell-impermeant fluorescent calcium indicator. Fluo-2 potassium binds calcium (Kd: 0.37 μM) with excitation/emission wavelengths of 493/518 nm, respectively.
    Fluo-2 potassium
  • HY-D0487
    C.I. Pigment yellow 97
    C.I. Pigment yellow 97 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. Pigment yellow 97
  • HY-D2017
    ATTO 550
    ATTO 550 is a new type of fluorescent dye with high fluorescence yield, which can be used for most labeling applications, maximum excitation/emission wavelength: 554/576 nm.
    ATTO 550
  • HY-160270
    DSPE-PEG-Fluor 488,MW 5000
    DSPE-PEG-Fluor 488,MW 5000 is a PEG-dye-lipid conjugate consists of a DSPE phospholipid which is an unsaturated phospholipid, a Fluor 488 dye which is a cyanine dye that is prominently used in fluorescence microscopy with excitation and emission maxima at 499 nm and 520 nm and a large PEG spacer which links the former substance together.
    DSPE-PEG-Fluor 488,MW 5000
  • HY-D2511
    Cy3-PEG-SH (MW 3400)
    Cy3-PEG-SH (MW 3400) (Cy3-PEG-Thiol) is a near infrared fluorescent labeling reagent that combines Cy3 fluorescent dye, polyethylene glycol (PEG) and sulfhydryl (SH) polyethylene glycol derivatives, and is suitable for molecular coupling. Cy3-PEG-SH (MW 3400) is absorbed at 550nm and has high solubility and end-group substitution rate.
    Cy3-PEG-SH (MW 3400)
  • HY-W739603
    Cy5-bifunctional dye potassium
    Cy5-bifunctional dye potassium is a water soluble bifunctional dye possessing two terminal NHS ester functions. The NHS esters can react specifically and efficiently with primary amines such as the side chain of lysine residue or aminosilane-coated surfaces at neutral or slight basic conditions to form a covalent bond. The dye is useful for the cross-conjugation of amines, and for other advanced labeling applications.
    Cy5-bifunctional dye potassium
Cat. No. Product Name / Synonyms Application Reactivity