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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-D2306
    DBCO-PEG-SH
    DBCO-PEG-SH is a multifunctional dye. Dyes are important tools in biological experiments. They can help researchers observe and analyze cell structures, track biomolecules, evaluate cell functions, distinguish cell types, detect biomolecules, study tissue pathology and monitor microorganisms. Their applications range from basic scientific research to clinical A wide range of diagnostics. Dyes are also widely used in traditional fields such as textile dyeing, as well as in emerging fields such as functional textile processing, food pigments and dye-sensitized solar cells.
    DBCO-PEG-SH
  • HY-D1801
    Vari Fluor 488 SE
    Vari Fluor 488 SE (VF 488 SE) is a dye marker of the Vari Fluor SE series (Ex/Em=488 nm/513 nm). The Vari Fluor SE series of dyes are a class of fluorescent dyes containing NHS ester groups used to label free amines (-NHX) on antibodies, proteins, peptides, amine-modified oligonucleotides and other biomolecules.
    Vari Fluor 488 SE
  • HY-DY1042
    TMRM Perchlorate (solution)
    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.
    Solvent and concentration: DMSO: 10 mM
    TMRM Perchlorate (solution)
  • HY-148835
    AzGGK
    		99.72%
    AzGGK is an unnatural amino acid. AzGGK is site-specifically incorporated into proteins via genetic-code expansion. AzGGK can be used as site-specific probe for ubiquitylation and SUMOylation. AzGGK 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.
    AzGGK
  • HY-137333
    4-Methylumbelliferyl β-D-cellobioside
    		99.43%
    4-Methylumbelliferyl β-D-cellobioside is a substrate of Cellulase (HY-B2220). 4-Methylumbelliferyl β-D-cellobioside can be hydrolyzed and produces fluorescent 4-methylumbelliferone, which can be used to study the kinetics of cellulases.
    4-Methylumbelliferyl β-D-cellobioside
  • HY-W250928C
    Biotin-PEG2000-azide
    		98.69%
    Biotin-PEG2000-azide is a biotin labeled PEG derivative. Biotin is an enzyme co-factor, can be used for labeling protein; PEG is a hydrophilic and water-soluble polymer with low toxicity; azide, is a moderately good leaving group, can react with alkyne by Cu-catalyzation, which improve the efficiency of biotin binding targets. 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.
    Biotin-PEG2000-azide
  • HY-W011618
    N-(9-Acridinyl)maleimide
    		98.43%
    N-(9-Acridinyl)maleimide is a maleimide type fluorescent thiol reagent. N-(9-Acridinyl)maleimide shows no substantial fluorescence but its coupling products with thiol compounds exhibit strong blue fluorescence. N-(9-Acridinyl)maleimide is used for fluorometrical analysis of cysteine and glutathione.
    N-(9-Acridinyl)maleimide
  • HY-147309
    16-Azidohexadecanoic acid
    		≥98.0%
    16-Azidohexadecanoic acid, a synthetic fatty acid, can be used as a modification marker for nucleotides and a molecular probe for fatty acid metabolism. 16-Azidohexadecanoic acid 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.
    16-Azidohexadecanoic acid
  • HY-P4125A
    FITC-LC-TAT (47-57) acetate
    		99.06%
    FITC-LC-TAT (47-57) acetate is a FITC-labeled TAT peptide (HY-P0281) (λex: 493 nm, λem: 522 nm). Derived from the trans-activator of transcription (TAT) of immunodeficiency virus (HIV-1), TAT enhances the yield of heterologous proteins.
    FITC-LC-TAT (47-57) acetate
  • HY-D2001
    ATTO 488 NHS ester
    ATTO 488 NHS ester is a new fluorescent marker based on the Rhodamine structure. It has strong absorption, high fluorescence quantum yield, high thermal stability and photochemical stability, and is suitable for single molecule detection and high-resolution microscopy. ATTO 488 NHS ester is an NHS ester derivative of ATTO 488 that can be used to label proteins or antibodies.
    ATTO 488 NHS ester
  • HY-D2479
    DMANI
    		99.81%
    DMANI is an intramolecular charge transfer (ICT)-based mitochondria-targeted ratiometric fluorescent probe. DMANI can monitor mitochondrial peroxynitrite (ONOO−) in living cells.
    DMANI
  • HY-154834
    BHQ-1 NHS
    BHQ-1 NHS is a quencher and fluorescent dye. BHQ-1 NHS enables direct labeling via fluorescently labeled nucleotides.
    BHQ-1 NHS
  • HY-W267364
    Coumarin 343
    Coumarin 343 (C343) is a hydrophilic fluorescent probe for the micro water pool. λem is approximately 425 nm andλem is approximately from 425 nm to 550 nm by RF-1500.
    Coumarin 343
  • HY-D1581
    BODIPY 505/515-8-C3-COOH
    		99.92%
    BODIPY 505/515-8-C3-COOH is a green fluorescing derivative, as a fluorescent dye for imaging lipid droplets in nannochloropsis. BODIPY 505/515-8-C3-COOH can be used for the research of flow cytometric high-throughput screening and cell sorting.
    BODIPY 505/515-8-C3-COOH
  • HY-15627
    Hoechst 33342 analog
    		98.16%
    Hoechst 33342 analog is a marker dye in Hoechst series. Hoechst is A live nuclear marker dye. Hoechst binds to the grooves in the DNA double strand, which tends to be A/ T-rich DNA strand. Although it binds to all nucleic acids, the A/ T-rich double strand DNA significantly enhances fluorescence intensity Therefore,Hoechst dye can be used for living cell labeling. The fluorescence intensity of Hoechst dye increases with the increase of pH of solution.
    Hoechst 33342 analog
  • HY-D0830
    Calcein (tetraethyl ester)
    		99.52%
    Calcein tetraethyl ester is a tetraethylated derivative of calcein, with its core function serving as a live cell-specific fluorescent tracer. Calcein tetraethyl ester can diffuse between human periodontal ligament cells via gap junctions, thus enabling the evaluation of gap junction intercellular communication function, and its diffusion is enhanced under hydrogen peroxide induction. Calcein tetraethyl ester can be applied in the fields of cell biology and fluorescent labeling.
    Calcein (tetraethyl ester)
  • HY-126220A
    KMG-301AM TFA
    KMG-301AM TFA is the acetoxy methyl esterified form of KMG-301. KMG-301AM TFA successfully accumulates in mitochondria and then it is hydrolyzed to KMG-301. KMG-301 is an Mg2+-selective fluorescent probe functional in mitochondria in intact cells. Since the mitochondrial membrane is impermeable to KMG-301, it is not released upon depolarization of the mitochondrial membrane potential. KMG-301 can indicate changes in mitochondrial Mg2+ concentration and shows Mg2+ transport across the mitochondrial membrane in the early phases of a cellular model.
    KMG-301AM TFA
  • HY-D0967
    Cy5-bifunctional dye
    		98.0%
    Cy5-bifunctional dye is a bifunctional dye used for covalent labeling of primary amines on proteins or oligonucleotides (Ex/Em = 649 nm/670 nm). Cy5-bifunctional dye can label recombinant annexin-V to assess phosphatidylserine exposure on the cell surface via flow cytometry. Cy5-bifunctional dye can label anti-human IgG (H + L) secondary antibodies. Cy5-bifunctional dye is applicable to studies of glanders and melioidosis.
    Cy5-bifunctional dye
  • HY-D1464
    CH1055
    CH1055 is a near-infrared II (NIR-II) fluorescent dye that can be used as a fluorescent probe for in vivo imaging. CH1055 can be conjugated with antibodies or ligands for specific imaging (for example the tumor imaging).
    CH1055
  • HY-W273413
    4-Hydrazino-7-nitro-benzofurazan hydrazine adduct
    		99.83%
    4-Hydrazino-7-nitro-benzofurazan hydrazine adduct (NBD-H) is a fluorescent reagent used for protein labeling.
    4-Hydrazino-7-nitro-benzofurazan hydrazine adduct
Cat. No. Product Name / Synonyms Application Reactivity