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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-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-D1806
    Vari Fluor 594-Streptavidin
    Vari Fluor 594-Streptavidin is a dye marker of Vari Fluor-streptavidin consisting of labeling streptavidin with a Vari Fluor series of fluorescent probes. Streptavidin is a high-affinity tetramer protein, each tetramer consisting of four identical streptavidin subunits. Streptavidin binds to biotin specifically via a reversible non-covalent effect. Streptavidin can achieve rapid and efficient detection of biotin markers, and is often used in immunofluorescence (IF), enzyme-linked immunosorbent assay (ELISA), immunohistochemical staining (IFH), in situ hybridization (ISH) and other experiments. Ex/Em=590 nm/617 nm.
    Vari Fluor 594-Streptavidin
  • 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-123629
    TAMRA-PEG3-Azide
    TAMRA-PEG3-Azide is a dye derivative of TAMRA (HY-135640) containing 3 PEG units. TAMRA-PEG3-Azide 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.
    TAMRA-PEG3-Azide
  • HY-D1491A
    Fast Red Violet LB Zinc chloride
    		98.86%
    Fast Red Violet LB Zinc chloride is a stain that stains tartrate-resistant acid phosphatase (TRAP) and Fast Red Violet LB Zinc chloride can be used to stain alkaline phosphatase (ALP) activity.
    Fast Red Violet LB Zinc chloride
  • 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-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-D2295
    Mito-FerroGreen
    Mito-FerroGreen is a mitochondria-specific ferrous ion detection probe with an excitation wavelength of 488nm.
    Mito-FerroGreen
  • 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-139109
    IR-783
    		99.87%
    IR-783 (ADS 780WS) is a near-infrared (NIR) heptamethine cyanine fluorescent probe. IR-783 significantly inhibits tumour growth and induces apoptosis in MDA-MB-231 xenograft model. IR-783 can be used to study breast cancer.
    IR-783
  • HY-D1450
    IR-1048
    IR-1048 is a nitroreductase (NTR)-responsive near-infrared fluorescence (NIR)/photoacoustic (PA) imaging probe and photothermal agent. IR-1048 is coupled with a nitroimidazole group to form IR-1048-MZ. IR-1048-MZ is catalytically reduced by NTR in a hypoxic environment, restoring strong near-infrared absorption and fluorescence emission (NIR II window), while activating the photothermal effect. IR-1048 relies on NTR-mediated electron transfer to relieve intramolecular fluorescence quenching, achieving specific imaging and photothermal ablation of tumor hypoxic areas. IR-1048 is mainly used for high-contrast NIR II/photoacoustic imaging and photothermal therapy research and tumor diagnosis of the tumor hypoxic microenvironment.
    IR-1048
  • 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-D0022
    5-Aminofluorescein
    		99.66%
    5-Aminofluorescein (5-AF) is a fluorescence marker, covalently bound to human serum albumin. The excitation wavelength is 495 nm and the emission wavelength is 535 nm.
    5-Aminofluorescein
  • HY-132969
    SBP-3264
    		98.50%
    SBP-3264 is a valuable chemical probe for understanding the roles of STK3 and STK4 in acute myeloid leukemia (AML).
    SBP-3264
  • HY-W094758A
    4-Di-1-ASP
    		99.95%
    4-Di-1-ASP is a styryl dye used to stain glioma cells in living brain tissue for analysis of cell structure, viability, proliferation and endocytosis, cytokinesis and phagocytosis, as well as for observation of mitochondrial structures in living cells. 4-Di-1-ASP fluoresces green when imaged microscopically (λex /λem = 475/606 nm) .
    4-Di-1-ASP
Cat. No. Product Name / Synonyms Application Reactivity