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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-155438
    Mal-Cz
    Mal-Cz is a maltose-derived fluorescence-on imaging probe for the detection of E. coli and Staphylococcus aureus. 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.
    Mal-Cz
  • HY-136784A
    Rhod-2 sodium
    Rhod-2 sodium is a cell impermeant, red fluorescent calcium indicator. Rhod-2 sodium exhibits a significant shift in fluorescence intensity upon calcium binding (ex max=549 nm; calcium-free v. ex/em max=552/581 nm; calcium-bound). Unlike the UV-excitable indicators Fura-2 and Indo-1 (HY-D0121), there is no accompanying spectral shift.
    Rhod-2 sodium
  • HY-157322
    SAV13
    SAV13 is an inhibitor of SaeR. SAV13 is an analogue of HR3744. SAV13 inhibits SaeR-DNA probe binding and has antivirulence properties.
    SAV13
  • HY-D0428
    C.I. Pigment red 9
    C.I. Pigment red 9 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.
    C.I. Pigment red 9
  • HY-D2695
    Cy7.5 HA (MW 200000)
    Cy7.5 HA (MW 200000) is a hyaluronic acid labeled with CY7.5 (HY-D0926). Cy7.5 HA (MW 200000) is widely used for cell imaging and in vivo imaging of shallow tissue (Ex/Em = 770/820 nm).
    Cy7.5 HA (MW 200000)
  • 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-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-D2729
    Cy3-NO2-Tre
    Cy3-NO2-Tre is a nitroreductase-responsive cyanine-based fluorescent probe that specifically labels Mycobacterium tuberculosis (Mtb). Cy3-NO2-tre generated fluorescence after activation by a specific nitroreductase, Rv3368c, which is conserved in the Mycobacteriaceae. Cy3-NO2-tre effectively imaged mycobacteria within infected host cells, tracked the infection process, and visualized Mycobacterium smegmatis being endocytosed by macrophages (Ex/Em= 540-550/575-625 nm).
    Cy3-NO2-Tre
  • 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-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-D2854
    FITC-PEG400-CL
    FITC-PEG400-CL is a fluorescent dye composed of FITC (HY-66019), PEG and chlorine (-Cl). The chlorine group is an electrophilic active group that can be used for nucleophilic substitution reactions and facilitate subsequent chemical modification (Ex/Em=488/525 nm).
    FITC-PEG400-CL
  • HY-D2514
    Cy3-PEG1000-DSPE
    Cy3-PEG1000-DSPE is a compound for the labeling and visualization of nanoparticles or other materials. Cy3-PEG1000-DSPE has a variety of applications including drug delivery, cellular imaging, tracing of bioprocesses, and the study of interactions at the molecular level.
    Cy3-PEG1000-DSPE
  • 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-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-D2856D
    FITC-PEG10000-Br
    FITC-PEG10000-Br is a fluorescent dye composed of FITC (HY-66019), PEG and chlorine (-Cl). The chlorine group is an electrophilic active group that can be used for nucleophilic substitution reactions and facilitate subsequent chemical modification (Ex/Em=488/525 nm).
    FITC-PEG10000-Br
  • HY-175132
    C12 NBD L-threo ceramide (d18:1/12:0)
    C12 NBD L-threo Ceramide (d18:1/12:0) (NBD L-threo cer (d18:1/12:0); NBD L-threo ceramide (d18:1/12:0); N-Dodecanoyl-NBD L-threo-sphingosine) is an NBD fluorescently labeled ceramide analog. C12 NBD L-threo Ceramide (d18:1/12:0) is an isomer of C12 NBD ceramide. C12 NBD L-threo Ceramide (d18:1/12:0) can be used for fluorescence detection, imaging, and kinetic analysis.
    C12 NBD L-threo ceramide (d18:1/12:0)
Cat. No. Product Name / Synonyms Application Reactivity