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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-138159
    Boc-Lys(Ac)-AMC
    		99.53%
    Boc-Lys(Ac)-AMC is a cell-permeable fluorometric HDAC substrate (Ex/Em = 355 nm/460 nm).
    Boc-Lys(Ac)-AMC
  • HY-120601
    Alizarin Red S sodium
    Alizarin Red S sodium is an anthraquinone derivative dye. When combined with cations such as calcium ions, the functional group of Alizarin Red S sodium can form a coordination bond with the cation through the oxygen atom to show orange-red fluorescence. Alizarin Red S sodium can be used for screening of calcium compounds in synovial fluid and detecting osteoblast differentiation, and can also be used for bone staining in mice. Excitation/emission wavelength: 500/570 nm.
    Alizarin Red S sodium
  • HY-139579
    Pafolacianine
    		99.04%
    Pafolacianine (OTL 38) is a fluorescent imaging agent made of near-infrared dye used in detecting tumor lesions during surgical procedures. Pafolacianine excites at 774 to 775 nm and emits at 794 to 796 nm.
    Pafolacianine
  • HY-D0259
    Erythrosine B
    		98.0%
    Erythrosine B is an artificial dye widely used in the food and textile industries. Erythrosine B is also a novel photosensitizer which has been used to develop animal models.
    Erythrosine B
  • HY-D0935A
    4-Methylumbelliferyl-β-D-glucuronide hydrate
    		99.92%
    4-Methylumbelliferyl-β-D-glucuronide hydrate is a fluorogenic substrat (λex=362 nm, λem=445 nm). 4-Methylumbelliferyl-β-D-glucuronide hydrate has potential applications in detecting the activity of β-glucuronidase and the number of Escherichia coli.
    4-Methylumbelliferyl-β-D-glucuronide hydrate
  • HY-W010042
    L-Glucose
    		99.88%
    L-Glucose (L-(-)-Glucose) is a stereoisomer of D-Glucose (HY-B0389), which does not readily enter the brain. L-Glucose can promote food intake. L-glucose is combined with a fluorescence detector to produce a fluorescent probe that can be used to visualize and characterize cancer cells. L-Glucose also can be used in the research to enhance memory in mice.
    L-Glucose
  • HY-D0823
    CY3-SE
    Cy3-SE (Sulfo-Cy3 NHS ester; Sulfo Cyanine3 NHS ester) is a sulfonated cyanine dye-derived fluorescent labeling reagent with λex of about 515 nm and λem of about 568 nm. Cy3-SE can interact with the π-π stacking of biomolecules (e.g., nucleoside monophosphates, proteins), inhibiting the photoisomerization process and increasing the fluorescence quantum yield and lifetime.
    CY3-SE
  • HY-W247131
    DASPEI
    		99.91%
    DASPEI is a cationic styrenyl mitochondrial dye with large Stokes shift. DASPEI has excitation and emission wavelength at 550/573 nm, which has good light chromogenic property. DASPEI can stain mitochondria in living cells with good labeling property. And DASPEI can also be used to stain presynaptic nerve endings independently of neuronal activity.
    DASPEI
  • HY-15940
    5(6)-Carboxyfluorescein
    		99.66%
    5(6)-Carboxyfluorescein (5(6)-FAM) is an amine-reactive pH-sensitive green fluorescent probe. 5(6)-Carboxyfluorescein (5(6)-FAM) can be used to label proteins, peptides and nucleotides. 5(6)-Carboxyfluorescein can be used for the detection of tumour areas in vivo.
    5(6)-Carboxyfluorescein
  • HY-136865
    MeOSuc-AAPV-AMC
    		98.07%
    MeOSuc-AAPV-AMC is a fluorogenic substrate for human leukocyte and porcine pancreatic elastase (Km: 362 μM, Ex=380 nm, Em=460 nm).
    MeOSuc-AAPV-AMC
  • HY-D1601
    N-Aminofluorescein
    		99.91%
    N-Aminofluorescein is a fluorescein hydrazide with spiro form, a highly selective and sensitive fluorescence probe for Cu2+. N-Aminofluorescein has no selective fluorescence response to other common metal ions, can be used for direct detection of Cu2+ in biological systems with λex/em=495/516 nm. N-Aminofluorescein can be used to measure the concentration of copper ions in cells.
    N-Aminofluorescein
  • HY-D1159
    HKOH-1r
    		98.43%
    HKOH-1r is a highly sensitive green fluorescent probe for the specific detection of ·OH in living cells with a maximum excitation wavelength and emission wavelength of 500 nm and 520 nm, respectively.
    HKOH-1r
  • HY-D0961
    Gallocyanine chloride
    Gallocyanine chloride is a synthetic blue dyestuff that can be used as a potential agent for the research of Alzheimer's disease and related neurodegenerative tauopathies. Gallocyanine chloride inhibits DKK1/LRP6 interaction (IC50=6.38 μM), activates Wnt signaling pathway, and causes β-catenin accumulation. Gallocyanine chloride exhibits anti-metastasis, anti-inflammatory and anti-fibrosis activities. Gallocyanine chloride can be used as a fluorescent probe for detection of superoxide anion radicals.
    Gallocyanine chloride
  • HY-D0006
    Bathophenanthroline
    		99.59%
    Bathophenanthroline is a nitrogen-containing organic ligand that can form stable complexes with transition metal ions such as Ru2+. In proteomics, Bathophenanthroline is often used for in-gel protein staining. The negatively charged sulfonic acid groups of Bathophenanthroline interact electrostatically with the positively charged amino acid residues of proteins, thereby achieving specific binding to proteins and enhancing the fluorescent signal of detection. Bathophenanthroline can be used for protein separation and detection in SDS-PAGE gels in the field of proteomics, as well as other fluorescence studies[1]. Ex/Em=532 nm/610 nm[1].
    Bathophenanthroline
  • HY-130735
    Janelia Fluor® 646, SE
    		99.67%
    Janelia Fluor 646, SE (JF646, SE) is a red fluorescent dye can be used in cellular imaging. Janelia Fluor products are licensed under U.S. Pat. Nos. 9,933,417, 10,018,624 and 10,161,932 and other patents from Howard Hughes Medical Institute.
    Janelia Fluor® 646, SE
  • HY-D1458
    Peroxyfluor 1
    Peroxyfluor 1 is a cell-permeable probe for H2O2. Peroxyfluor 1 represents a first-generation, green-fluorescent probe.
    Peroxyfluor 1
  • HY-D0893
    NSP-SA-NHS
    		99.65%
    NSP-SA-NHS is an acridinium ester that can be used for chemiluminescent immunoassay. A rapid and sensitive chemiluminescent immunoassay of Bisphenol A (BPA) with NSP-SA-NHS-labeled has been developed.
    NSP-SA-NHS
  • HY-W088075
    Acriflavine hydrochloride
    		99.4%
    Acriflavine (Acriflavinium chloride) hydrochloride is a fluorescent acridine dye that can be used to label nucleic acid. Acriflavine hydrochloride is an antiseptic agent. Acriflavine hydrochloride is a potent HIF-1 inhibitor that prevents the dimerization of HIF-1α and HIF-1β subunits. Acriflavine hydrochloride inhibits the interaction between monocarboxylate transporter 4 (MCT4) and Basigin. Acriflavine hydrochloride is used in cancer research, such as breast cancer, brain tumor and chronic myeloid leukemia. Acriflavine hydrochloride is a potent papain-like protease (PLpro) inhibitor, which inhibits SARS-CoV-2.
    Acriflavine hydrochloride
  • HY-D0926
    Cy7.5
    		99.94%
    Cy7.5 is a CY dye. CY, short for Cyanine, is a compound consisting of two nitrogen atoms connected by an odd number of methyl units. Cyanine compounds have the characteristics of long wavelength, adjustable absorption and emission, high extinction coefficient, good water solubility and relatively simple synthesis. CY dyes are of en used for the labeling of proteins, antibodies and small molecular compounds. For the labeling of protein antibodies, the combination can be completed through a simple mixing reaction. Below, we introduce the labeling method of protein antibody labeling, which has certain reference significance.
    Cy7.5
  • HY-118135
    4-Methylumbelliferyl-α-D-galactopyranoside
    		99.76%
    4-Methylumbelliferyl-α-D-galactopyranoside (4MU-α-Gal), a substrate for α-galactosidase A (GLA), is a blue pro-fluorogenic substrate. 4-Methylumbelliferyl-α-D-galactopyranoside forms two products, galactose and fluorescent 4MU, upon cleavage by GLA.
    4-Methylumbelliferyl-α-D-galactopyranoside
Cat. No. Product Name / Synonyms Application Reactivity