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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-D2852
    Heparin-Cy7
    Heparin-Cy7 is a fluorescent dye composed of CY7 (HY-D0825) and heparin. Heparin-CY7 is used to study the localization and distribution of heparin in vivo and its interaction with other biomolecules (Ex/Em = 740/770 nm).
    Heparin-Cy7
  • HY-W998662
    Coumarin 343 X carboxylic acid
    Coumarin 343 X carboxylic acid is a blue emitting fluorophore used as a laser dye. The fluorophore can serve as a FRET donor for FAM (fluorescein).
    Coumarin 343 X carboxylic acid
  • HY-120512
    5-Phenyl-4E-pentenol
    5-Phenyl-4E-pentenol is a product of the peroxidase-catalyzed reduction of PPHP. 5-Phenyl-4E-pentenol can be rapidly isolated by solid phase extraction and quantified by isocratic reversed-phase high performance liquid chromatography (HPLC) with UV detection. 5-Phenyl-4E-pentenol is a fluorescent dye that can be used to determine the kinetic properties of heme-containing and non-heme peroxidases and to evaluate the ability of oxidative compounds to serve as substrates for peroxidase reduction..
    5-Phenyl-4E-pentenol
  • HY-D2661
    Cy5.5 HA (MW 100000)
    Cy5.5 HA (MW 100000) is a hyaluronic acid labeled with CY5.5 (HY-D0924). Cy5.5 HA (MW 100000) is widely used for cell imaging and in vivo imaging of shallow tissue (Ex/Em = 680/710 nm).
    Cy5.5 HA (MW 100000)
  • HY-D2537
    Cy3-PEG-N3 (MW 2000)
    Cy3-PEG-N3 (MW 2000) is a Cy3 (HY-D0822)-azide fluorescent dye used to label for protein and nucleic acid. Cy3-PEG-N3 (MW 2000) 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.
    Cy3-PEG-N3 (MW 2000)
  • HY-D0280
    Pigment red 57-1
    Pigment red 57-1 is a commonly used commercial dye for bulk coloring of plastics and synthetic fibers and for surface coatings such as paints and inks.
    Pigment red 57-1
  • HY-163098
    JJ-OX-007
    JJ-OX-007 is a fluorescent probe which selectively for FphE in live S.aureus cells.
    JJ-OX-007
  • HY-D1683A
    NBD-X PE
    NBD-X PE is a derivative of NBD-PE, where the NBD part is replaced by NBD-X acid.
    NBD-X PE
  • HY-D2758
    TAMRA DBCO, 5-isomer
    TAMRA DBCO, 5-isomer is a derivative of tetramethylrhodamine (TMR, TAMRA) containing a cyclooctyne moiety (dibenzocyclooctyne, DBCO). Pure 5-isomer. DBCO reacts quickly and efficiently with azides by simply mixing the components without the need for a copper catalyst (so-called sterically promoted cycloaddition reaction (SPAAC)). TAMRA DBCO can be used for the labeling of proteins, peptides, nucleic acids, and other molecules containing azide groups.
    TAMRA DBCO, 5-isomer
  • HY-138111
    4-Nitrophenyl β-D-cellotetraoside
    4-Nitrophenyl β-D-cellotetraoside (p-Nitopheyl β-D-cellotetaoside) is a small molecule cellulose mimetic consisting of a tetramer of D-glucose units linked by β-1-4 glycosidic bonds. The fragmentation pattern of 4-Nitrophenyl β-D-cellotetraoside after enzymatic hydrolysis can be analyzed by TLC or by the release of 4-nitrophenol, which has a strong absorbance at 395 nm in alkaline solutions. 4-Nitrophenyl β-D-cellotetraoside can be used in cellulose degradation studies to determine the specificity of cellulases.
    4-Nitrophenyl β-D-cellotetraoside
  • HY-D2371
    3-BTMD
    3-BTMD is obtained by COMT enzyme specifically catalyzing the substrate 3-BTD (Ex=390 nm, Em=510 nm).
    3-BTMD
  • HY-172557
    2'(3')-Br-ANT-GTP tetrasodium
    2'(3')-Br-ANT-GTP tetrasodium is a derivative of GTP. 2'(3')-Br-ANT-GTP tetrasodium can be excited at 350 nm and emit at 380-550 nm.
    2'(3')-Br-ANT-GTP tetrasodium
  • HY-D0512
    Fluorescent brightener 251
    Fluorescent brightener 251 is an optical brightener dye.
    Fluorescent brightener 251
  • HY-D2642
    Cy5 HA (MW 10000)
    Cy5 HA (MW 10000) is a hyaluronic acid labeled with CY5 (HY-D0821). Cy5 HA (MW 10000) is widely used for cell imaging and in vivo imaging of shallow tissue (Ex/Em = 633/670 nm).
    Cy5 HA (MW 10000)
  • HY-D0496
    C.I. Mordant green 17
    C.I. Mordant green 17 is an azo dye.
    C.I. Mordant green 17
  • HY-147172
    Ru(bpy)2(dcbpy)NHS dihexafluorophosphate
    Ru(bpy)2(dcbpy)NHS (dihexafluorophosphate) combines with gold nanoparticle amplification can be used for the determination of lysozyme with electrochemiluminescence.
    Ru(bpy)2(dcbpy)NHS dihexafluorophosphate
  • HY-172168A
    Orange Fluorescent PLGA nanoparticles, 200nm
    Orange Fluorescent PLGA nanoparticles, 200nm a nanoparticle made from the polymer PLGA and labeled with an orange fluorescent dye. Orange Fluorescent PLGA nanoparticles, 200nm can be used for drug delivery and for tracing.
    Orange Fluorescent PLGA nanoparticles, 200nm
  • HY-D0409
    C.I. Mordant yellow 8
    C.I. Mordant yellow 8 is an azo dye.
    C.I. Mordant yellow 8
  • HY-D1204
    Pigment Yellow 65
    Pigment Yellow 65 is a disazomethine dye with solid-state fluorescence.a biologically active chemical.
    Pigment Yellow 65
  • HY-D2615
    ICG PEG biotin (MW 5000)
    ICG PEG biotin (MW 5000) is a fluorescent dye composed of Indocyanine green (ICG) (HY-D0711), PEG and biotin. Indocyanine green provides it with fluorescent labeling function, PEG enhances its biocompatibility and stability, and biotin can bind to target molecules containing streptavidin to achieve targeted imaging or targeted delivery (Ex/Em = 785/813 nm).
    ICG PEG biotin (MW 5000)
Cat. No. Product Name / Synonyms Application Reactivity