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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-D1541
    Sulfo-Cyanine5.5 alkyne
    Sulfo-Cyanine5.5 alkyne, a near-infrared (NIR) fluorescent dye, is an alkyne modified Sulfo-Cyanine5.5 (Ex=67 8nm, Em=694 nm). Sulfo-Cyanine5.5 alkyne can react with azides for Click Chemistry labeling.
    Sulfo-Cyanine5.5 alkyne
  • HY-D1135
    Pigment yellow 81
    Pigment yellow 81 is a disazomethine dye with solid-state fluorescence.a biologically active chemical.
    Pigment yellow 81
  • HY-D2172
    AF488 carboxylic acid
    AF488 carboxylic acid is a non-reactive AF 488 form. AF488 exhibits the λem and λex wavelength of 520 nm and 470 nm, respectively.
    AF488 carboxylic acid
  • HY-D2883H
    RB-PEG-SH (MW 10000)
    RB-PEG-SH (MW 10000) (Rhodamine B-PEG-SH (MW 10000)) is a fluorescent dye composed of Rhodamine B (HY-Y0016), PEG and sulfhydryl (SH). SH is highly reactive and can react with a variety of functional groups (such as maleimide) to form stable thioether bonds (Ex/Em = 546/610 nm).
    RB-PEG-SH (MW 10000)
  • HY-D2804
    Chitosan-Cy7 (MW 10000)
    Chitosan-Cy7 (MW 10000) is a Chitosan labeled with Cy7 (HY-D0825). Chitosan-Cy7 (MW 10000) can be used for fluorescent labeling and imaging.
    Chitosan-Cy7 (MW 10000)
  • HY-P10590
    Talogreptide mesaroxetan
    Talogreptide mesaroxetan is a diagnostic imaging agent, with antineoplastic effect.
    Talogreptide mesaroxetan
  • HY-D2893B
    RB-PEG-RB (MW 1000)
    RB-PEG-RB (MW 1000) (Rhodamine B-PEG-Rhodamine B (MW 1000)) a fluorescent dye composed of two Rhodamine B (HY-Y0016) and PEG. RB-PEG-RB (MW 1000) can be used for fluorescent labeling and imaging (Ex/Em = 546/610 nm).
    RB-PEG-RB (MW 1000)
  • HY-D1771
    Thionin perchlorate
    Thionin perchlorate is a general nuclear stain for chromatin and mucin.
    Thionin perchlorate
  • HY-D1573
    C6 NBD Phytoceramide
    C6 NBD Phytoceramide is a fluorescently labeled short-chain ceramide analog that can be recognized by mammalian GlcCer synthase (GCS).
    C6 NBD Phytoceramide
  • HY-D2893C
    RB-PEG-RB (MW 3400)
    RB-PEG-RB (MW 3400) (Rhodamine B-PEG-Rhodamine B (MW 3400)) a fluorescent dye composed of two Rhodamine B (HY-Y0016) and PEG. RB-PEG-RB (MW 3400) can be used for fluorescent labeling and imaging (Ex/Em = 546/610 nm).
    RB-PEG-RB (MW 3400)
  • HY-D1978
    ATTO 610 biotin
    ATTO 610 Biotin is a biotin derivative of ATTO 610 with maximum excitation/emission wavelengths: 616/633 nm.
    ATTO 610 biotin
  • HY-D1294
    SY-21 NHS ester
    SY-21 NHS ester is a QSY-21 analog. QSY-21 is a specific quencher against A647. QSY-21 labels polymer. QSY-21 can be used in colon cancer research.
    SY-21 NHS ester
  • HY-NP0170
    Wheat Germ Agglutinin (Agarose)
    Wheat Germ Agglutinin (Agarose) is a plant lectin that can be used as a probe to specifically bind biomolecules (such as polysaccharides, peptides, etc.).Wheat Germ Agglutinin (Agarose) is a biological material or organic compound that can be used in life science research.
    Wheat Germ Agglutinin (Agarose)
  • HY-D2061
    ATTO 740 carboxy
    ATTO 740 carboxy is a carboxyl derivative of ATTO 740, the maximum excitation/emission wavelength is: 743/763 nm.
    ATTO 740 carboxy
  • HY-P10240
    Ac-WVAD-AMC
    Ac-WVAD-AMC is a fluorogenic substrate for caspase 1.
    Ac-WVAD-AMC
  • HY-D1514
    NIR-641 N-succinimidyl ester
    NIR-641 N-succinimidyl ester is a fluorescent dye.
    NIR-641 N-succinimidyl ester
  • HY-D1680
    LysoSR-549
    LysoSR-549 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.
    LysoSR-549
  • HY-D1667
    BDP 558/568 hydrazide
    BDP 558/568 hydrazide is a carbonyl reactive hydrazide derivative of BDP 558/568 (BDP 558/568: Ex=558 nm, Em=568 nm). BDP 558/568 hydrazide can be used for the labeling of aldehydes or ketones.
    BDP 558/568 hydrazide
  • HY-125452
    DiSBAC10
    DiSBAC10 is a voltage-sensitive fluorescent probe used to study cell membrane electrical activity in FRET assays. In a resting polarized cell, DiSBAC10 resides on the outer leaflet of the membrane where it accepts photons from excited fluorescein-labeled proteins and re-emits the photons at a higher wavelength. Depolarization of the cell causes rapid translocation of DiSBAC10 to the inner leaflet of the membrane, thereby increasing the distance between fluorophores and reducing the FRET signal.
    DiSBAC10
  • HY-D1918
    ATTO 390 maleimide
    ATTO 390 maleimide is a maleimide ester derivative of ATTO 390, which can be used to label proteins or antibodies. The maximum excitation/emission wavelength: 390/476 nm.
    ATTO 390 maleimide
Cat. No. Product Name / Synonyms Application Reactivity