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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-148242
    BAY-069
    		99.27%
    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-101897
    Fura-2 AM
    		≥99.0%
    Fura-2 AM is a high affinity, intracellular, UV light-excitable and ratiometric fluorescent Ca2+ (calcium ion) indicator.
    Fura-2 AM
  • HY-D0056
    5-Carboxyfluorescein diacetate N-succinimidyl ester
    		99.30%
    5-Carboxyfluorescein diacetate N-succinimidyl ester is a cell permeable dye (Ex=492 nm, Em=517 nm). 5-Carboxyfluorescein diacetate N-succinimidyl ester can label cells by covalently binding to intracellular molecules. 5-Carboxyfluorescein diacetate N-succinimidyl ester is used to track lymphocyte migration and proliferation.
    5-Carboxyfluorescein diacetate N-succinimidyl ester
  • HY-D1041
    ICG-OSu
    ICG-OSu (ICG NHS ester) is a near-infrared fluorescent agent ICG derivative. ICG-OSu is amine-reactive and has been widely used to design in vivo imaging probes.
    ICG-OSu
  • HY-D0309
    Rhodamine 6G
    		98.0%
    Rhodamine dyes are membrane-permeable cationic fluorescent probes that specifically recognize mitochondrial membrane potentials, thereby attaching to mitochondria and producing bright fluorescence, and at certain concentrations, rhodamine dyes have low toxicity to cells, so they are commonly used to detect mitochondria in animal cells, plant cells, and microorganisms.
    Rhodamine 6G
  • HY-D0974
    Sulforhodamine B sodium salt
    		99.43%
    Sulforhodamine B sodium salt is a fluorescent dye with uses spanning from laser-induced fluorescence (LIF) to the quantification of cellular proteins of cultured cells.
    Sulforhodamine B sodium salt
  • HY-130412
    FlAsH-EDT2
    		≥99.0%
    FlAsH-EDT2 is a protein labeling reagent. FlAsH-EDT2 binds to Cys4 with high affinity and emits fluorescence. FlAsH-EDT2 can cross the cell membrane and enter the interior of the cell. FlAsH-EDT2 can only be used for labeling proteins with high concentration.
    FlAsH-EDT2
  • HY-66021
    6-FAM
    		99.72%
    6-FAM (6-Carboxyfluorescein) is an isomer of carboxyfluorescein and is mainly used for sequencing and labeling of nucleic acids.
    6-FAM
  • HY-D1730A
    AF488 NHS ester TEA
    AF488 NHS ester TEA is an amine specific fluorescence probe (λem=525 nm=525 nm). AF488 NHS ester reacts with sulfhydryl groups and amines in aqueous and biological samples then change their chemical structure and fluorescence properties after derivatization. AF488 exhibits the λem and λex wavelength of 520 nm and 470 nm, respectively.
    AF488 NHS ester TEA
  • HY-D0824A
    CY7-SE triethylamine
    		≥98.0%
    CY7-SE triethylamine 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-SE triethylamine
  • HY-137592
    Nicotinamide 1,N6-ethenoadenine dinucleotide
    		≥99.0%
    Nicotinamide 1,N6-ethenoadenine dinucleotide (ε-NAD) , a fluorescent analogue of NAD, is able to serve as a substrate for the bacterial toxincatalyzed G-ADP ribosylation of signal-transducing G-proteins. Nicotinamide 1,N6-ethenoadenine dinucleotide can be used as a fluorescent substrate for the studies of the ADP ribosylation reaction.
    Nicotinamide 1,N6-ethenoadenine dinucleotide
  • HY-D0213
    Sudan Black B
    		99.13%
    Sudan Black B, a fat-soluble diazo dye, is a histochemical stain. Sudan Black B can be used for staining of neutral triglycerides and lipids.
    Sudan Black B
  • 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-D1416
    HMBR
    		98.43%
    HMBR is an analogue with an additional methyl group on the aromatic ring and is non-fluorescent. HMBR conjugated with Y-FAST emits yellow fluorescence under blue light excitation (Ex= 419 nm; Em= 525–539 nm). HMBR is non-toxic to zebrafish embryos. HMBR has high cell permeability.
    HMBR
  • 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-118462
    Coelenteramine 400a
    		99.70%
    Coelenteramine 400a (Coelenterazine 400a), a derivative of Coelenterazine, is a Renilla luciferase (RLuc) substrate. In the presence of Coelenteramine 400a, RLuc can emit blue light at 395 nm. Coelenterazine 400a will causes color change in the bioluminescence reaction of Rluc by replacing the sulfur and oxygen heteroatoms of the methylene bridge. Coelenterazine 400a provides higher signal resolution and can be used in the research of bioluminescence resonance energy transfer (BRET).
    Coelenteramine 400a
  • HY-D0505
    Eosin Y
    		99.42%
    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-D1314
    FAM azide, 6-isomer
    		98.21%
    FAM azide, 6-isomer (6-FAM azide), a fluorescent dye, is a click chemistry reagent containing an azide group. It contains an azide group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing alkyne groups. It can also undergo ring strain-promoted alkyne-azide cycloaddition (SPAAC) with molecules containing DBCO or BCN groups.
    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
Cat. No. Product Name / Synonyms Application Reactivity