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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-D1738
    DAPI dilactate
    		99.0%
    DAPI (4',6-Diamidino-2-phenylindole) dilactate is a DAPI dye. DAPI is a fluorescent dye that binds strongly to DNA. It binds to the AT base pair of the double-stranded DNA minor groove, and one DAPI molecule can occupy three base pair positions. The fluorescence intensity of DAPI molecules bound to double-stranded DNA is increased by about 20 times, and it is commonly observed with fluorescence microscopy, and the amount of DNA can be determined based on the intensity of fluorescence. DAPI cannot penetrate intact cell membranes and is commonly used for staining both live and fixed cells. DAPI (Compound 3) is an acid-sensing ion channel 3 (ASIC3) inhibitor. DAPI binds to ASIC3 and blocks the channel function. DAPI can be used in the study of chronic pain treatment (Ex/Em = 356/451 nm).
    DAPI dilactate
  • HY-D0832
    CY5-N3
    		98.07%
    CY5-N3 (Sulfo-Cyanine5-azide) is a Cy5-azide, which is a fluorescent dye (ex/em: 646/662 nm). CY5-N3 is cell membrane permeable and can be used for live cell imaging. CY5-N3 can be used in cell imagine by Click reaction.
    CY5-N3
  • HY-D1627
    CellTracker CM-DiI
    CellTracker CM-DiI (CM-DiI) is a lipophilic fluorochrome that can be used for tracking the migration of lymphocytes. CellTracker CM-DiI is feasible to detect labeled cells in histological sections (excitation 553 nm; emission 570 nm).
    CellTracker CM-DiI
  • HY-D0001
    Alcian Blue 8GX
    Alcian Blue 8GX is a commonly used phthalocyanine dye that binds to glycoproteins and glycosaminoglycans. Alcian Blue 8GX has a wide range of applications in biological staining, including proteins in brain tumors and DNA in cells and tissues.
    Alcian Blue 8GX
  • HY-66022
    5-FAM
    		99.58%
    5-FAM (5-Carboxyfluorescein) is a green fluorescent reagent used for in situ labeling peptides, proteins and nucleotides. 5-FAM is a single isomer with Ex/Em of 490 nm/520 nm.
    5-FAM
  • HY-D0169
    Phenol Red
    		98.0%
    Phenol red (Phenolsulfonephthalein) is a pH indicator dye, relying on a distinct color change from pink to yellow in case of a positive reaction .
    Phenol Red
  • HY-D1837
    Vari Fluor 488 TSA（200×）
    Vari Fluor 488 TSA（200×） (VF 488 Tyramide) is a fluorescent probe belonging to the Vari Fluor TSA series. Vari Fluor TSA series fluorescent probes can be used for high-density in situ labeling of target antigens using horseradish peroxidase (HRP) assays, which are widely used in ELISA, IF, IHC and other techniques with high detection sensitivity.
    Vari Fluor 488 TSA（200×）
  • HY-D1069
    DBCO-Cy3
    		98.00%
    DBCO-Cy3 (DBCO-Sulfo-Cy3) is the derivative of Cyanine3 fluorophore, a pH insensitive from pH (4-10) orange fluorescent dyewith excitation maximum 555 nm and emission maximum of 580nm. DBCO-Cy3 has fast reaction kinetics and good stability, and is productive to use in many standard fluorescent instrumentations. DBCO-Cy3 is a click chemistry reagent, it contains a DBCO group that can undergo strain-promoted alkyne-azide cycloaddition (SPAAC) with molecules containing Azide groups.
    DBCO-Cy3
  • HY-D1314
    FAM azide, 6-isomer
    		99.80%
    FAM azide, 6-isomer (6-FAM azide) is a 6-carboxyfluorescein derivative with an azide functional group and coupling partner in copper-catalyzed azide-alkyne cycloaddition. FAM azide, 6-isomer participates in synthesis of fluorescently tagged disparlure enantiomers for pheromone-binding protein binding assays. FAM azide, 6-isomer is widely used for labeling oligonucleotides (Ex/Em = 493/517 nm).
    FAM azide, 6-isomer
  • HY-100575
    Acriflavine
    		98.0%
    Acriflavine (Acriflavinium chloride) is a fluorescent acridine dye that can be used to label nucleic acid. Acriflavine is an antiseptic agent. Acriflavine is a potent HIF-1 inhibitor that prevents the dimerization of HIF-1α and HIF-1β subunits. Acriflavine inhibits the interaction between monocarboxylate transporter 4 (MCT4) and Basigin. Acriflavine is used in cancer research, such as breast cancer, brain tumor and chronic myeloid leukemia. Acriflavine is a potent papain-like protease (PLpro) inhibitor, which inhibits SARS-CoV-2.
    Acriflavine
  • HY-D1094
    Carboxy-SNARF 1 (5/6-mixture)
    Carboxy-SNARF 1 (5/6-mixture) (SNARF 1) is a fluorescent probe that is sensitive to pH (Ex: 488 nm). Carboxy-SNARF 1 (5/6-mixture) can be used for measurement pH. Carboxy-SNARF 1 (5/6-mixture) exhibits a significant emission shift from yellow-orange (Em: 580 nm) to deep red fluorescence (Em: 640 nm) under acidic and basic conditions (pH=7-8), respectively.
    Carboxy-SNARF 1 (5/6-mixture)
  • HY-D0505
    Eosin Y
    		99.47%
    Eosin Y (Acid Red 87 free base) is a soluble acid red dye molecule. Eosin Y has a wide application in organic synthesis as a photoredox catalyst.
    Eosin Y
  • HY-136886
    IR-820
    IR-820 (New Indocyanine Green) is an infrared blood pool contrast agent. IR-820 also is normally used as a laser and near-infrared dye to detect and quantify diseased tissue in live animals.
    IR-820
  • HY-D0716
    Fluo-3AM
    		≥99.0%
    Fluo-3 AM is a fluorecent Ca2+ chelator, with high affinity for calcium. Fluo-3 AM can specifically identify intracellular calcium ions, with high sensitivity, low cytotoxicity, increased AM acetylmethyl ester can enter the cell well, after being sheared by the intracellular esterase stay in the cell to bind to calcium ions, produce strong fluorescence.
    Fluo-3AM
  • HY-D1594
    BODIPY TR Cadaverine
    		99.05%
    BODIPY TR Cadaverine, a cadaverine derivative, is a red fluorescent dye. BODIPY TR Cadaverine can be used in a a highly sensitive and robust fluorescent displacement assay, which binds to native LPS strongly, specifically recognizing lipid A, and is competitively displaced by compounds displaying an affinity for lipid A.
    BODIPY TR Cadaverine
  • HY-148242
    BAY-069
    		99.54%
    BAY-069 is a potent branched-chain amino acid transaminases 1 (BCAT1) and BCAT2 inhibitor with IC50 values of 31 nM and 153 nM, respectively. BAY-069 also can be used as a chemical probe. BAY-069 can be used tor research anticancer.
    BAY-069
  • HY-D1816
    Vari Fluor 555-Phalloidin
    Vari Fluor 555-Phalloidin is a fluorescent derivative of Phalloidin that specifically labels myofilament proteins and exhibits red fluorescence when labeled, allowing for fluorescence imaging using the PE channel (Ex/Em=550 nm/561 nm).
    Vari Fluor 555-Phalloidin
  • HY-131498
    MOCAc-PLGL(Dpa)AR
    		99.86%
    MOCAc-PLGL (Dpa) AR (Mca-Pro-Leu-Gly-Leu-Dpa-Ala-Arg-NH2) is a synthetic fluorescent substrate mainly used for in vitro enzymatic activity assays of MMP-7 (detection at 393 nm after excitation at 328 nm). MOCAc-PLGL (Dpa) AR is specifically cleaved and hydrolyzed by MMP-7 at the Gly-Leu peptide bond, allowing enzymatic activity to be monitored via fluorometry or HPLC (DMSO is usually added to ensure sufficient dissolution when determining kinetic parameters). MOCAc-PLGL (Dpa) AR is used to accurately evaluate the catalytic activity and pH dependence of recombinant mature human MMP-7 in vitro. MOCAc-PLGL (Dpa) AR is suitable for research on the mechanisms of tumor metastasis and invasion, particularly in fields such as prostate cancer, colon cancer, lung cancer and breast cancer.\n
    MOCAc-PLGL(Dpa)AR
  • HY-DY1022
    BODIPY 581/591 C11 (solution)
    BODIPY 581/591 C11 (solution) is a BODIPY borofluoroprene derivative with good light stability and low fluorescence artifacts. BODIPY 581/591 C11 can be used for study lipid peroxidation and antioxidant properties in living cells, or detect ferroptosis by reaction with hydroxyl radicals. BODIPY 581/591 C11 is emitted at 591 nm (reduced prototype) , or redshifted to 510 nm (oxidized type). The excitation wavelengths were 581 nm (reduced prototype) and 500 nm (oxidized type) .
    Solvent and concentration: DMSO: 2 mM
    BODIPY 581/591 C11 (solution)
  • HY-DY1040
    LysoTracker Red (solution)
    LysoTracker Red (solution) is a Red fluorescently labeled lysosomal probe with a maximum excitation/emission wavelength of 577/590 nm. The structure is composed of a fluorescein group and linked weak bases, which can freely cross the cell membrane and gather on spherical organelles. It is suitable for observing the internal biosynthesis and related pathogenesis of lysosomes.
    Solvent and concentration: DMSO: 1 mM
    LysoTracker Red (solution)
Cat. No. Product Name / Synonyms Application Reactivity