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-123727
    Acid blue 120
    Acid blue 120 is an azo dye, which can be utilized in textile dyeing, food and pharmaceutical coloring, photosensitizer, sensor and surface modification.
    Acid blue 120
  • HY-D2431
    Galactose-PEG-Cy3
    Galactose-PEG-Cy3 is a Cy3 (HY-D0822) labeled Galactose-PEG conjugate. 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. Galactose-PEG improves drug cellular uptake and reduces endosomal degradation, and can be used in drug delivery.
    Galactose-PEG-Cy3
  • HY-D2686
    Cy7 HA biotin 3000
    Cy7 HA biotin 3000 is a biotinylated hyaluronic acid labeled with CY7 (HY-D0825). Cy7 HA biotin 3000 is widely used for cell imaging and in vivo imaging of shallow tissues (Ex/Em = 740/770 nm).
    Cy7 HA biotin 3000
  • HY-167270
    Rhoduline acid
    Rhoduline acid is an acidic compound that can be used for the synthesis of azo dyes.
    Rhoduline acid
  • HY-D2657
    Cy5.5 HA (MW 5000)
    Cy5.5 HA (MW 5000) is a hyaluronic acid labeled with CY5.5 (HY-D0924). Cy5.5 HA (MW 5000) is widely used for cell imaging and in vivo imaging of shallow tissue (Ex/Em = 680/710 nm).
    Cy5.5 HA (MW 5000)
  • HY-D2682
    Cy7 HA MA (MW 5000)
    Cy7 HA MA (MW 5000) is a hyaluronic acid methacrylate labeled with CY7 (HY-D0825). Cy7 HA MA (MW 5000) is widely used in the fields of biolabeling and imaging, drug delivery and tissue engineering and regenerative medicine (Ex/Em = 740/770 nm).
    Cy7 HA MA (MW 5000)
  • HY-D2543
    Cy5-PEG-DSPE (MW 3400)
    Cy5-PEG-DSPE (MW 3400) is a PEG phospholipid with Cy5 (HY-D0821) dye used in protein/nucelic acid labeling and fluorescence microscopy. Cy5-PEG-DSPE (MW 3400) can self-assemble in aqueous solution to form micelles/lipid bilayer and used to prepare liposomes or nanoparticles for nutrients delivery such as mRNA or DNA vaccine.
    Cy5-PEG-DSPE (MW 3400)
  • HY-D0103
    Fluorescein diacetate 5-maleimide
    Fluorescein diacetate 5-maleimide is a colorimetric probe formed by the reaction of adipic acid dihydrazide and fluorescein isothiocyanate.
    Fluorescein diacetate 5-maleimide
  • HY-D0236R
    Congo Red (Standard)
    Congo Red (Standard) is the analytical standard of Congo Red. This product is intended for research and analytical applications. Congo Red is an azo dye. Congo Red (CR) binding been used as a diagnostic test for the presence of amyloid in tissue sections.
    Congo Red (Standard)
  • HY-107864A
    Erythrosine B aluminum
    Erythrosine B aluminum is a visibly red dye with colorimetric and fluorescent properties that serves as an important dye for many Gram-positive and -negative bacteria. Erythrosine B aluminum can be used for live/dead determination in both colorimetric and fluorescence-based assays for low, medium and high-throughput experimentation.
    Erythrosine B aluminum
  • HY-D2646
    Cy5 HA (MW 200000)
    Cy5 HA (MW 200000) is a hyaluronic acid labeled with CY5 (HY-D0821). Cy5 HA (MW 200000) is widely used for cell imaging and in vivo imaging of shallow tissue (Ex/Em = 633/670 nm).
    Cy5 HA (MW 200000)
  • HY-D0524
    Disperse black 9
    Disperse black 9 is a violet dye commonly used for fiber dyeing.
    Disperse black 9
  • HY-D2358
    Glucosamine-CY5.5
    Glucosamine-CY5.5 is CY5.5-labeled Glucosamine (HY-B1125). Glucosamine-CY5.5 can be used to localize Glucosamine in living cells.
    Glucosamine-CY5.5
  • HY-D2648
    Cy5 HA MA (MW 3000)
    Cy5 HA MA (MW 3000) is a hyaluronic acid methacrylate labeled with CY5 (HY-D0821). Cy5 HA MA (MW 3000) 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 3000)
  • HY-D1415
    Cyanine 5 Bisfunctional MTSEA Dye potassium
    Cyanine 5 Bisfunctional MTSEA Dye potassium belongs to the cyanine dye series and is a common fluorescent marker for biomolecules that can interact with biomolecules. Cyanine dyes may also bind to double-helical DNA through intercalation and exhibit enhanced fluorescence upon binding.
    Cyanine 5 Bisfunctional MTSEA Dye potassium
  • HY-D0426
    C.I. Pigment red 8
    C.I. Pigment red 8 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 8
  • HY-D2802C
    FITC-PEG-N3 (MW 5000)
    FITC-PEG-N3 (MW 5000) is an azide fluorescent dye containing polyethylene glycol (PEG) and FITC (HY-66019). FITC-PEG-N3 (MW 5000) 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 5000)
  • HY-D2573
    Cy5.5-PEG-FA (MW 2000)
    Cy5.5-PEG-FA (MW 2000) 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 2000)
  • HY-D0555
    C.I. Disperse orange 73
    C.I. Disperse orange 73 is an orange-orange dye commonly used for fiber dyeing.
    C.I. Disperse orange 73
  • HY-160280
    DOPE-PEG-Fluor 647,MW 2000
    DOPE-PEG-Fluor 647,MW 2000 is a PEG-lipid-dye conjugate. composed of a DOPE phospholipid and a Fluor 647 dye.
    DOPE-PEG-Fluor 647,MW 2000
Cat. No. Product Name / Synonyms Application Reactivity