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-D2698
    Cy7.5 HA MA (MW 5000)
    Cy7.5 HA MA (MW 5000) is a hyaluronic acid methacrylate labeled with CY7.5 (HY-D0926). Cy7.5 HA MA (MW 5000) is widely used in the fields of biolabeling and imaging, drug delivery and tissue engineering and regenerative medicine (Ex/Em = 770/820 nm).
    Cy7.5 HA MA (MW 5000)
  • HY-D2701
    Cy7.5 HA MA (MW 100000)
    Cy7.5 HA MA (MW 100000) is a hyaluronic acid methacrylate labeled with CY7.5 (HY-D0926). Cy7.5 HA MA (MW 100000) is widely used in the fields of biolabeling and imaging, drug delivery and tissue engineering and regenerative medicine (Ex/Em = 770/820 nm).
    Cy7.5 HA MA (MW 100000)
  • HY-D2523
    Cy3-PEG-FA (MW 2000)
    Cy3-PEG-FA (MW 2000) is a fluorescent folate-PEG derivative with excitation/emission wavelengths of ~550 nm/~570 nm. Cy3-PEG-FA (MW 2000) can be readily traced by its intense red fluorescent signal. Cy3-PEG-FA (MW 2000) can be used for cell imaging, folate receptor targeting and detection.
    Cy3-PEG-FA (MW 2000)
  • HY-D2683
    Cy7 HA MA (MW 10000)
    Cy7 HA MA (MW 10000) is a hyaluronic acid methacrylate labeled with CY7 (HY-D0825). Cy7 HA MA (MW 10000) 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 10000)
  • HY-D0700
    Reactive red 24:1
    Reactive red 24:1 is common textile dyes that can be adsorbed onto single-walled carbon nanotubes (SWCNTs) through electrostatic interactions, allowing the separation of residual dyes.
    Reactive red 24:1
  • HY-139404
    C10 AV Ceramide (d18:1/10:0)
    C10 AV Ceramide (d18:1/10:0) is a fluorescent probe. Anthrylvinyl (AV) acts as the fluorescent label positioned on the amide linked acyl chain on the Ceramide molecule to measure the CERT-mediated transfer. The anthrylvinyl moiety of C10 AV Ceramide (d18:1/10:0) localizes to the hydrophobic region of the bilayer.
    C10 AV Ceramide (d18:1/10:0)
  • HY-D2851
    FITC-PEG-CHOL (MW 2000)
    FITC-PEG-CHOL (MW 2000) is a fluorescent dye composed of FITC (HY-66019), PEG and cholesterol. FITC-PEG-CHOL (MW 2000) is widely used in cell membrane-related studies, liposome and nanoparticle modification, and biomolecule labeling (Ex/Em = 488/525 nm).
    FITC-PEG-CHOL (MW 2000)
  • HY-D0650
    Acid violet 54
    Acid violet 54 is an acidic dye that is adsorbed by Musa extract.
    Acid violet 54
  • HY-D2563
    Cy5.5-PEG-N3 (MW 10000)
    Cy5.5-PEG-N3 (MW 10000) is a Cy5.5 (HY-D0924)-azide fluorescent dye used to label for protein and nucleic acid. Cy5.5-PEG-N3 (MW 10000) 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.
    Cy5.5-PEG-N3 (MW 10000)
  • HY-D1366A
    Sulfo-Cyanine5.5 carboxylic acid potassium
    Sulfo-Cyanine5.5 carboxylic acid potassium is a fluorescent dye with excitation/emission wavelengths at 673/707 nm. The introduction of the sulfite group enhances the hydrophilic properties of the compound. The terminal carboxylic acid can react with primary amine groups in the presence of activators such as EDC and HATU, to form stable amide bonds.
    Sulfo-Cyanine5.5 carboxylic acid potassium
  • HY-D0211R
    Phenolphthalein (Standard)
    Phenolphthalein (Standard) is the analytical standard of Phenolphthalein. This product is intended for research and analytical applications. Phenolphthalein is a widely applied but toxic indicator dye.
    Phenolphthalein (Standard)
  • HY-D2432
    Mannose-PEG-Cy3
    Mannose-PEG-Cy3 is a Cy3 (HY-D0822) labeled Mannose-PEG.
    Mannose-PEG-Cy3
  • HY-D2848
    Chitosan-Cy5.5 (MW 2000)
    Chitosan-Cy5.5 (MW 2000) is a fluorescent dye composed of CY5.5 (HY-D0924) and chitosan. Chitosan-Cy5.5 (MW 2000) can be used for bioimaging, drug delivery and biomaterial research (Ex/Em = 680/710 nm).
    Chitosan-Cy5.5 (MW 2000)
  • HY-158726
    Complex 3
    Complex 3 is a fluorescent dithiocarbazate-copper complex with anticancer activity, which localizes to mitochondria. Complex 3 displays excitation/emission maxima of 455-495/535 nm, respectively. Complex 3 inhibits the growth of BxPC-3, AsPC-1, PANC-1, and WI38 pancreatic cancer cells with IC50 values of 0.74, 0.41, 0.62, and 2.06 µM, respectively. Complex 3 induces lipid peroxidation and mitochondrial rupture and shrinkage in AsPC-1 cells. Complex 3 also induces mitochondrial apoptosis and cytokine-cytokine receptor interaction dysfunction in AsPC-1 cells. Complex 3 reduces tumor volume in an AsPC-1 mouse xenograft model.
    Complex 3
  • HY-D2635
    Cy3 HA biotin 3000
    Cy3 HA biotin 3000 is a biotinylated hyaluronic acid labeled with CY3 (HY-D0822). Cy3 HA biotin 3000 is widely used for cell imaging and in vivo imaging of shallow tissues (Ex/Em = 550/570 nm).
    Cy3 HA biotin 3000
  • HY-D0660
    Acid red 131
    Acid red 131 is an acid dye that can be decolorized when aluminum sulfate is used as a coagulant.
    Acid red 131
  • HY-D2485
    Sulfo Cy3 bis COOH
    Sulfo Cy3 bis COOH is a derivative of Cy3 (HY-D0822) dye containing sulfonate ions. Sulfo Cy3 bis COOH contains carboxyl groups, which can condense ammonia to form covalent bonds.
    Sulfo Cy3 bis COOH
  • HY-D2735
    QSY-9-succinimidyl ester
    QSY-9-succinimidyl ester is a nonfluorescent acceptor molecule with a terminal NHS ester group. QSY-9-succinimidyl ester has a wide and intense quenching range from 500-600 nm that makes it useful as an acceptor in fluorescence resonance energy transfer (FRET) applications in conjunction with fluorescent dyes at 500 nm to 600 nm. The NHS ester can be applied to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules.
    QSY-9-succinimidyl ester
  • HY-130785
    LysoFP-NH2
    LysoFP-NH2 is a lysosomal-targeted fluorescent probe with amino acid functionalized derivatives. LysoFP-NH2 can be used to detect lysosomal NO levels in living cells.
    LysoFP-NH2
  • HY-137073
    Cy7 alkyne chloride
    Cy7 alkyne chloride is a dye derivative of Cyanine 7 (Cy7) containing an alkyne functional group (Ex/Em = 740/770 nm). The alkyne functionality of Cy7 alkyne chloride can react with molecules containing the azide functionality to form covalent bonds.
    Cy7 alkyne chloride
Cat. No. Product Name / Synonyms Application Reactivity