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-D1277
    Pigment red 21
    Pigment red 21 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.
    Pigment red 21
  • HY-130783
    LysoFP-NO2
    LysoFP-NO2 is a turn-on fluorescent probe for carbon monoxide (CO) that localizes to the lysosome. In the presence of lysosomal CO, lysoFP-NO2 is transformed into lysoFP-NH2, which is highly fluorescent. LysoFP-NO2 is selective for CO over various reactive nitrogen, oxygen, and sulfur species. It displays excitation/emission maxima of 440/528 nm, respectively, and is not cytotoxic to HepG2 cells for up to five hours when used at a concentration of 30 μM.
    LysoFP-NO2
  • HY-D2428
    OVA-PEG-Cy3
    OVA-PEG-Cy3 is a Cy3 (HY-D0822)-labeled OVA-PEG conjugate. The Cy3 fluorophore is commonly used in applications such as immunolabeling, nucleic acid labeling, fluorescence microscopy, and flow cytometry. The maximum emission wavelength of Cy3 is approximately 562-570 nm. Ovalbumins (OVA) (HY-W250978), the main protein found in egg whites, have various biological activities such as anticancer, antihypertensive, antibacterial, antioxidant and immunomodulatory activities. Ovalbumins are the most abundant proteins synthesized in progesterone- or estrogen-treated fallopian tubes and are commonly used as markers to study hormone regulation of gene expression in tissues.
    OVA-PEG-Cy3
  • HY-W835383
    Sulfo Cy5.5-COOH
    Sulfo-Cy5.5-COOH is a sulfonated Cy5.5 fluorescent dye containing a sulfonic acid group and a carboxylic acid group. The fluorescence wavelength of Sulfo-Cy5.5-COOH is in the near-infrared region and has strong penetrating power.
    Sulfo Cy5.5-COOH
  • 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-167270
    Rhoduline acid
    Rhoduline acid is an acidic compound that can be used for the synthesis of azo dyes.
    Rhoduline acid
  • 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-D2447
    BDP 650/665 DBCO
    BDP 650/665 DBCO is a BDP 650/665 labeled DBCO. BDP 650/665 is the BODIPY dye with a maximal excitation wavelength of 650 nm, and a maximal emission wavelength of 665 nm. DBCO interacts with azide group for a click chemistry. BDP 650/665 DBCO can be used for lipid labeling.
    BDP 650/665 DBCO
  • 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-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-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-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
  • HY-D1209
    Acid Red 35
    Acid Red 35 is an acid dye that can be decolorized when aluminum sulfate is used as a coagulant.
    Acid Red 35
Cat. No. Product Name / Synonyms Application Reactivity