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-D2802D
    FITC-PEG-N3 (MW 10000)
    FITC-PEG-N3 (MW 10000) is an azide fluorescent dye containing polyethylene glycol (PEG) and FITC (HY-66019). FITC-PEG-N3 (MW 10000) 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.
    FITC-PEG-N3 (MW 10000)
  • HY-W776847
    3-(2-Iodoacetamido)-proxyl
    3-(2-Iodoacetamido)-proxyl serves as a free radical spin probe employed in spin labeling techniques, which facilitate the exploration of the dynamic interactions among molecules, proteins, lipids, and cell membranes.
    3-(2-Iodoacetamido)-proxyl
  • HY-D2625
    Cy3 HA (MW 50000)
    Cy3 HA (MW 50000) is a hyaluronic acid labeled with CY3 (HY-D0822). Cy3 HA (MW 50000) is widely used for cell imaging and in vivo imaging of shallow tissue (Ex/Em = 550/570 nm).
    Cy3 HA (MW 50000)
  • HY-D0543
    Pigment yellow 151
    Pigment yellow 151 is a disazomethine dye with solid-state fluorescence.a biologically active chemical.
    Pigment yellow 151
  • HY-W749072
    BP Fluor 568 NHS ester
    BP Fluor 568 NHS ester is an amine-reactive, orange fluorescent dye routinely used to label proteins or antibodies through the primary amines (Lys), amine-modified oligonucleotides, and other amine-containing biomolecules (Ex/Em: 578 nm/602 nm).
    BP Fluor 568 NHS ester
  • HY-172164A
    FITC-lysine-dextran (MW 10kDa)
    FITC-lysine-dextran, 10kDa is a dextran with lysine coupling with a fluorescent group FITC (HY-66019). Lysine-dextran exhibits higher Glu-plasminogen binding ability than dextran alone.
    FITC-lysine-dextran (MW 10kDa)
  • HY-D0690
    Pigment orange 64
    Pigment orange 64 is a pyrazolone dye commonly used in industry.
    Pigment orange 64
  • HY-D0643
    C.I. Disperse orange 33
    C.I. Disperse orange 33 is an orange-orange dye commonly used for fiber dyeing.
    C.I. Disperse orange 33
  • HY-D1311
    R110 azide, 6-isomer
    R110 azide, 6-isomer is an isomer of rhodamine dye with an azide group that labels DNA fragments. It enables visualization of the results of capillary electrophoresis genotyping experiments and gel shift experiments.
    R110 azide, 6-isomer
  • HY-D0248
    Acid Blue 45
    Acid Blue 45 is an acid dye.
    Acid Blue 45
  • HY-D0484
    C.I. Disperse yellow 70
    C.I. Disperse yellow 70 is a yellow dye commonly used for fiber dyeing.
    C.I. Disperse yellow 70
  • HY-D0517
    Disperse brown 4
    Disperse brown 4 is a brown dye commonly used for fiber dyeing.
    Disperse brown 4
  • HY-D2650
    Cy5 HA MA (MW 10000)
    Cy5 HA MA (MW 10000) is a hyaluronic acid methacrylate labeled with CY5 (HY-D0821). Cy5 HA MA (MW 10000) is widely used in the fields of biolabeling and imaging, drug delivery and tissue engineering and regenerative medicine (Ex/Em = 633/670 nm).
    Cy5 HA MA (MW 10000)
  • HY-D1386
    JF526-Taxol TFA
    JF526-Taxol (TFA) is a versatile scaffold for fluorogenic probes including ligands for self-labeling tags, stains for endogenous structures, and spontaneously blinking labels for super-resolution immunofluorescence.
    JF526-Taxol TFA
  • HY-D0448
    C.I. Acid red 154
    C.I. Acid red 154 is an acid red dye that can be adsorbed and removed by bentone clay.
    C.I. Acid red 154
  • HY-D2495
    Cy7 SE (nosulfo)
    Cy7 SE (nosulfo) is a fluorescent dye for the labeling of amino-groups in peptides, proteins, and oligonucleotides.
    Cy7 SE (nosulfo)
  • HY-D2748
    5-JOE azide
    5-JOE azide is a fluorescent dye with the emission in yellow region of the spectrum. The azide group can react with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage.
    5-JOE azide
  • HY-D2180
    Preactivated APC-Cy5.5 Maleimide
    Preactivated APC-Cy5.5 Maleimide is a sulfhydryl reactive dye that reacts with free sulfhydryl groups on proteins. Preactivated APC-Cy5.5 Maleimide binds easily to proteins or antibodies, and does not change the spectral characteristics of APC-Cy/YF after activation.
    Preactivated APC-Cy5.5 Maleimide
  • HY-D0571
    Pigment yellow 75
    Pigment yellow 75 is a disazomethine dye with solid-state fluorescence.a biologically active chemical.
    Pigment yellow 75
  • HY-172508
    Perylene dU phosphoramidite
    Perylene dU phosphoramidite is a bright and extremely photostable fluorescent polycyclic aromatic hydrocarbon (PAH) label with a quantum yield approaching quantitative. Due to the low lifetime of fluorescence, this probe does not form excimers.With this phosphoramidite, perylene can be introduced into DNA by automated oligonucleotide synthesis.
    Perylene dU phosphoramidite
Cat. No. Product Name / Synonyms Application Reactivity