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-D2554
    Cy5.5-PEG-NH2 (MW 5000)
    Cy5.5-PEG-NH2 (MW 5000) is a polyethylene glycol derivative containing Cy5.5 (HY-D0924) fluorescent dye and polyethylene glycol (PEG) and an amino group. The Cy5.5 fluorophore is commonly used in applications such as immunolabeling, nucleic acid labeling, fluorescence microscopy, and flow cytometry. Cy5.5 has an emission maximum around 710 nm. Cy5.5-PEG-NH2 (MW 5000) can be used for fluorescence imaging, fluorescence tracing and fluorescence labeling.
    Cy5.5-PEG-NH2 (MW 5000)
  • HY-D0427
    C.I. Pigment red 12
    C.I. Pigment red 12 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 12
  • HY-D2422B
    Cy5-Paclitaxel
    Cy5-Paclitaxel is a Cyanine5 carboxylic acid bromide (HY-D1319) labeled Paclitaxel (HY-B0015) conjugate. Cyanine5 carboxylic acid bromide is a fluorescent dye containing a non-activated carboxylic acid (Ex=646 nm, Em=662 nm) that can be used for molecular labeling and microscopy imaging. Paclitaxel stabilizes tubulin polymerization. Paclitaxel can cause both mitotic arrest and apoptotic cell death. Paclitaxel also induces autophagy.
    Cy5-Paclitaxel
  • HY-D0518
    Direct red 227
    Direct red 227 is a good dyeing agent for cotton fabrics.
    Direct red 227
  • HY-D2731
    Cy3-NO2
    Cy3-NO2 is a cyanine-based probe. Cy3-NO2 can be excited by using a 554 nm laser and filtered with a 568 nm laser.
    Cy3-NO2
  • HY-W800770
    MB 543 DBCO
    MB 543 DBCO is a fluroescent agent with a terminal DBCO group. The DBCO group is commonly used for copper-free Click Chemistry reactions due to its strain promoted high energy. MB 543 Alkyne is a very hydrophilic, water-soluble, orange fluorescent dye that has a maximal absorption of 543 nm and emission at 566 nm. The compound is also pH insensitive from pH 3 to pH 10.
    MB 543 DBCO
  • HY-D0456
    C.I. Direct violet 66
    C.I. Direct violet 66 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. Direct violet 66
  • HY-136672
    (E)-HBT-O
    (E)-HBT-O is an isomer of HBT-O. HBT-O is a fluorescent probe used to monitor subtle pH fluctuations in living cells.
    (E)-HBT-O
  • HY-D0249R
    Sunset Yellow FCF (Standard)
    Sunset Yellow FCF (Standard) is the analytical standard of Sunset Yellow FCF. This product is intended for research and analytical applications. Sunset Yellow FCF (Orange Yellow S) is an orange azo dye with a maximum absorption wavelength of 480 nm. Sunset Yellow FCF can be used in food, cosmetics and pharmaceuticals.
    Sunset Yellow FCF (Standard)
  • HY-D2658
    Cy5.5 HA (MW 7000)
    Cy5.5 HA (MW 7000) is a hyaluronic acid labeled with CY5.5 (HY-D0924). Cy5.5 HA (MW 7000) is widely used for cell imaging and in vivo imaging of shallow tissue (Ex/Em = 680/710 nm).
    Cy5.5 HA (MW 7000)
  • HY-D0549
    Pigment red 266
    Pigment Red 266 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 266
  • HY-D2624
    Cy3 HA (MW 10000)
    Cy3 HA (MW 10000) is a hyaluronic acid labeled with CY3 (HY-D0822). Cy3 HA (MW 10000) is widely used for cell imaging and in vivo imaging of shallow tissue (Ex/Em = 550/570 nm).
    Cy3 HA (MW 10000)
  • HY-D2440
    cRGD-PEG-Cy3
    cRGD-PEG-Cy3 is a Cy3 (HY-D0822) labeled cRGD-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. cRGD can be used to modify lipid for improved stability.
    cRGD-PEG-Cy3
  • HY-D0459
    C.I. Pigment brown 25
    C.I. Pigment brown 25 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 brown 25
  • HY-D2664
    Cy5.5 HA MA (MW 3000)
    Cy5.5 HA MA (MW 3000) is a hyaluronic acid methacrylate labeled with CY5.5 (HY-D0924). Cy5.5 HA MA (MW 3000) is widely used in the fields of biolabeling and imaging, drug delivery and tissue engineering and regenerative medicine (Ex/Em = 680/710 nm).
    Cy5.5 HA MA (MW 3000)
  • HY-D0632
    Pigment Red 147
    Pigment Red 147 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 147
  • HY-D2357
    Lactat-CY5
    Lactat-CY5 is Cy5-labeled Lactat (HY-B2227). Lactat-CY5 can be used to localize Lactat in living cells.
    Lactat-CY5
  • HY-D2602
    ICG PEG NH2 (MW 5000)
    ICG PEG NH2 (MW 5000) is a polyethylene glycol derivative containing Indocyanine green (ICG) (HY-D0711) fluorescent dye and polyethylene glycol (PEG) and an amino group. The Indocyanine green fluorophore is commonly used in applications such as immunolabeling, nucleic acid labeling, fluorescence microscopy, and flow cytometry. ICG PEG NH2 (MW 5000) can be used for fluorescence imaging, fluorescence tracing and fluorescence labeling (Ex/Em = 785/813 nm).
    ICG PEG NH2 (MW 5000)
  • HY-137858
    H-Gly-Arg-pNA hydrochloride
    H-Gly-Arg-pNA hydrochloride (GR-pNA hydrochloride) is a colorimetric substrate for thrombin. H-Gly-Arg-pNA is preferentially bound by thrombin and cleaves the Gly-Arg (GR) peptide sequence, releasing p-nitroaniline (pNA) that can be detected colorimetrically at 405 nm. H-Gly-Arg-pNA hydrochloride is used as a fluorescent dye to measure thrombin activity.
    H-Gly-Arg-pNA hydrochloride
  • HY-D0584
    Reactive orange 86
    Reactive orange 86 is common textile dyes that can be adsorbed onto single-walled carbon nanotubes (SWCNTs) through electrostatic interactions, allowing the separation of residual dyes.
    Reactive orange 86
Cat. No. Product Name / Synonyms Application Reactivity