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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-W800831
    Tetra-sulfo-Cy7 DBCO
    Tetra-sulfo-Cy7 DBCO is a bright and photostable near-IR probe. The Cy7 DBCO is water-soluble, hydrophilic dye often a reagent of choice for assay where minimal non-specific binding and exceptional brightness is required. The fluorescence of Cy7 DBCO is pH insensitive from pH 4 to pH 10 and produces minimal autofluorescence of biological specimens in this region of the spectrum. Fluorescence of this long-wavelength Cyanine dye is not visible to the human eye but is readily detected by most imaging systems.
    Tetra-sulfo-Cy7 DBCO
  • HY-D2255
    BDP FL ceramide
    BDP FL ceramide, a highly fluorescent lipid, is a conjugate of green-emitting BDP FL fluorophore with sphingosine. BDP FL ceramide can be used for the visualization of the Golgi apparatus via fluorescence microscopy.The excitation wavelength is 503 nm and the emission wavelength is 509 nm.
    BDP FL ceramide
  • HY-D0774
    Direct Black 168
    Direct Black 168 is a good dyeing agent for cotton fabrics.
    Direct Black 168
  • HY-172309
    UBQ-3 NHS ester
    UBQ-3 NHS Ester is a fluroescent agent with a terminal NHS ester group. UBQ-3 NHS Ester has a wide quenching range from 620-730 nm, which makes the compound useful as an acceptor in fluorescence resonance energy transfer (FRET) applications in conjunction with far-red to near-IR emitting dyes such as Cy5, Cy5.5, Alexa Fluor 633, 647, 700. The NHS ester can be applied to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules.
    UBQ-3 NHS ester
  • HY-D2137
    Cy3-PEG3-Azide
    Cy3-PEG3-Azide is a Cyanine 3 (Cy3) (HY-D0822) dye derivative containing 3 PEG units. Cy3-PEG3-Azide contains an azide group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing alkyne groups. It can also undergo ring strain-promoted alkyne-azide cycloaddition (SPAAC) with molecules containing DBCO or BCN groups.
    Cy3-PEG3-Azide
  • HY-134308
    8-NBD-cAMP sodium
    8-NBD-cAMP sodium is a fluorescently labeled cyclic adenosine phosphate (cAMP) analogue. 8-NBD-cAMP sodium retains a similar biological activity to cAMP, regulating their activity by binding to specific proteins such as EPACs or PKA. 8-NBD-cAMP sodium can be used in fluorescent competitive binding experiments to evaluate the binding affinity of newly synthesized EPAC1 agonists to EPAC1 proteins.
    8-NBD-cAMP sodium
  • HY-D0314
    Solvent Red 1 (C.I.)
    Solvent Red 1 (C.I.) is a red dye. Its series of products, such as Solvent orange 60 (HY-D1177), has been used in dyeing applications of plastic materials.
    Solvent Red 1 (C.I.)
  • HY-D2574
    Cy5.5-PEG-FA (MW 5000)
    Cy5.5-PEG-FA (MW 5000) is a fluorescently labeled biomolecule consisting of Cy5.5 (HY-D0924) fluorescent dye, polyethylene glycol (PEG), and Folic acid (FA) (HY-16637). Cy5.5 is commonly used in applications such as immunolabeling and nucleic acid labeling. The maximum emission wavelength of Cy5.5 is approximately 710 nm.
    Cy5.5-PEG-FA (MW 5000)
  • HY-W026772R
    Fluorene (Standard)
    Fluorene (Standard) is the analytical standard of Fluorene. This product is intended for research and analytical applications. Fluorene, a polycyclic aromatic hydrocarbon (PAH), is a precursor to other fluorene compounds. Fluorene and its derivative?can be used as a precursor to fluorene-based dyes.
    Fluorene (Standard)
  • HY-D2865
    Celltrack Deep Red
    Celltrack Deep Red is a fluorescent dye with a fluorescence signal that can be maintained for at least 72 h and has good stability. Celltrack Deep Red can be used for cell tracing and multi-generation cell movement tracking. Within a cell population, Celltrack Deep Red is only transferred to daughter cells and not to neighboring cells (Ex/Em = 630/650 nm).
    Celltrack Deep Red
  • HY-B1335R
    Pentetic acid (Standard)
    Pentetic acid (Standard) is the analytical standard of Pentetic acid. This product is intended for research and analytical applications. Pentetic acid is a compound used to construct magnetic adsorbent, which can simultaneously remove heavy metal and dye from complex wastewater.
    Pentetic acid (Standard)
  • HY-D2446
    BDP 650/665 azide
    BDP 650/665 azide is a BDP 650/665 labeled azide group. BDP 650/665 is the BODIPY dye with a maximal excitation wavelength of 650 nm, and a maximal emission wavelength of 665 nm. BDP 650/665 azide can be used for click chemistry.
    BDP 650/665 azide
  • HY-D2514
    Cy3-PEG-DSPE (MW 1000)
    Cy3-PEG-DSPE (MW 1000) is a compound for the labeling and visualization of nanoparticles or other materials. Cy3-PEG-DSPE (MW 1000) has a variety of applications including drug delivery, cellular imaging, tracing of bioprocesses, and the study of interactions at the molecular level.
    Cy3-PEG-DSPE (MW 1000)
  • HY-D2524
    Cy3-PEG-FA (MW 5000)
    Cy3-PEG-FA (MW 5000) is a fluorescently labeled biomolecule consisting of Cy3 (HY-D0822) fluorescent dye, polyethylene glycol (PEG), and Folic acid (FA) (HY-16637). Cy3 is commonly used in applications such as immunolabeling and nucleic acid labeling. The maximum emission wavelength of Cy3 is approximately 562-570 nm.
    Cy3-PEG-FA (MW 5000)
  • HY-D0420
    C.I. Acid red 151
    C.I. Acid red 151 is an acid red dye that can be adsorbed and removed by bentone clay.
    C.I. Acid red 151
  • HY-D2430
    Chitosan-PEG-Cy3
    Chitosan-PEG-Cy3 is a fluorescent labeling reagent that combines Cy3 (HY-D0822) fluorescent dye, Chitosan and polyethylene glycol (PEG). The Cy3 fluorophore is commonly used in applications such as immunolabeling, nucleic acid labeling, fluorescence microscopy, and flow cytometry. Cy3 has an emission maximum around 562-570 nm. Chitosan exhibits antimicrobial activity against various bacteria and fungi.
    Chitosan-PEG-Cy3
  • HY-D2842E
    FITC-PEG-biotin (MW 10000)
    FITC-PEG-biotin (MW 10000) is a fluorescent dye composed of polyethylene glycol (PEG), FITC (HY-66019) and a Biotin (HY-B0511). FITC-PEG-biotin (MW 10000) can be used for fluorescent labeling and imaging.
    FITC-PEG-biotin (MW 10000)
  • HY-D0322
    Vat Red 10
    Vat Red 10 is a red dye.
    Vat Red 10
  • HY-D0395
    C.I. Mordant Orange 29
    C.I. Mordant Orange 29 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. Mordant Orange 29
  • HY-D2801C
    FITC-PEG-NHS (MW 5000)
    FITC-PEG-NHS (MW 5000) is a fluorescent dye composed of polyethylene glycol (PEG), FITC (HY-66019) and a hydroxysuccinimide (NHS) group. The NHS group can react with amine-containing groups. FITC-PEG-NHS (MW 5000) can be used for fluorescent labeling and imaging.
    FITC-PEG-NHS (MW 5000)
Cat. No. Product Name / Synonyms Application Reactivity