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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-D0017
    Dansyl chloride
    		99.97%
    Dansyl chloride is a reagent that produces stable blue or blue-green fluorescent sulfonamide adducts in the reaction of aliphatic and aromatic amines with primary amino groups, and is widely used for modified amino acids, protein sequencing and amino acid analysis.
    Dansyl chloride
  • HY-N7131
    Coumarin 6
    		99.93%
    Coumarin 6, a fluorescent dye, is used as a fluorescent probe in a microparticle drug delivery system to conduct in vivo tracking, cell uptake, and transport mechanism studies of drug delivery systems (λexc=450 nm, λem=505 nm).
    Coumarin 6
  • HY-D0034
    9,10-Anthracenediyl-bis(methylene)dimalonic acid
    9,10-Anthracenediyl-bis(methylene)dimalonic acid (ABMDMA) is a biological dye and indicator used to detect singlet oxygen generation (SOG). 9,10-Anthracenediyl-bis(methylene)dimalonic acid is water-soluble derivative of anthracene. 9,10-Anthracenediyl-bis(methylene)dimalonic acid can be photobleached by singlet oxygen to its corresponding endoperoxide. This reaction can be monitored spectrophotometrically by recording the decrease of absorbance at 400 nm.
    9,10-Anthracenediyl-bis(methylene)dimalonic acid
  • HY-D0257
    Tartrazine
    		99.85%
    Tartrazine (Acid Yellow 23; FD&C Yellow No. 5) is an orally active azo acid dye, orange-yellow powder, soluble in water and turns yellow. Tartrazine is mainly used as a synthetic lemon yellow azo dye for food coloring. Tartrazine is the most stable colorant.Tartrazine induces mitochondria-mediated Apoptosis. Tartrazine can cause neurodevelopmental toxicity, cytotoxicity, and genotoxicity.
    Tartrazine
  • HY-15922
    Luminol
    		99.68%
    Luminol is a chemical that exhibits chemiluminescence with pKa values of 6.74 and 15.1. Luminol exhibits chemiluminescence (CL) at 425 nm λmax. Luminol is commonly used in forensics as a diagnostic tool for the detection of blood stains.
    Luminol
  • HY-15558
    Hoechst 33258
    		99.93%
    Hoechst 33258 is a blue to blue-green fluorescent live cell dye that can label DNA. Hoechst 33258 can specifically bind to the minor groove of DNA (and tends to bind to A/T-rich DNA), resulting in a significant increase in fluorescence intensity. Hoechst 33258 can cross the cell membrane and cause changes in DNA structure, such as G2/M phase arrest. Hoechst 33258 can bind to live or fixed cells, and the fluorescence intensity increases with increasing solution pH. As a DNA-specific probe, Hoechst 33258 can be used to detect DNA content, analyze cell cycle, etc. The excitation wavelength of Hoechst 33258 is 350-365 nm, and the emission wavelength is 460-490 nm.
    Hoechst 33258
  • HY-D1431
    ER-Tracker Red
    		98.08%
    ER-Tracker dye is a derivative of BODIPY series dyes coupled with Glibenclamide (HY-15206), highly selective binding to the endoplasmic reticulum, non-toxic to cells at low concentrations, this type of dye is an environmentally sensitive probe, and formaldehyde treatment can still retain part of the fluorescence, with high fluorescence life, good extinction coefficient and other characteristics. Glibenclamide is an atp-dependent K+ channel blocker (Kir6, KATP) and CFTR Cl-channel blocker that binds in the endoplasmic reticulum. ER-Tracker is not suitable for staining cells after fixation. Ex/Em=587/615 nm.
    ER-Tracker Red
  • HY-112498
    Cy3 NHS ester
    		99.45%
    Cy3 NHS ester 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.
    Cy3 NHS ester
  • HY-158082C
    TRITC-dextran, MW 70000
    TRITC-dextran, MW 70000 (Tetramethyl rhodamine isothiocyanate glucan, MW 70000) is a fluorescent dye, with the molecular weight of 70 kD. TRITC-dextran, MW 70000 exhibits an excitation wavelength of 555 nm. TRITC-dextran, MW 70000 is utilized in drug delivery for the stability of TRITC over a wide pH range (i.e. pH 2–11) and resistance to photo-bleaching.
    TRITC-dextran, MW 70000
  • HY-D1373
    HBC
    		99.69%
    HBC (HBC 530) is a GFP fluorophore-like synthetic dye, with a structurally rigid electron acceptor and a strong electron donor. HBC is nonfluorescent in solution, and when combined with Pepper (RNA aptamer), HBC forms a tight complex and activates and emits bright fluorescence (Kd of ~3.5 nM). HBC emission peaks vary in different complexes and covers the spectrum from cyan to red. HBC can be used in the live cell imaging of RNA (Em/Ex = 530/485 nm).
    HBC
  • HY-100041
    Bromobimane
    		99.31%
    Bromobimane (Monobromobimane) is a nonfluorescent and converts into fluorescent products when reacts with thiols. Bromobimane has potential applications in labeling thiols.
    Bromobimane
  • HY-D1583
    Cyanine5 DBCO hexafluorophosphate
    		99.65%
    Cyanine5 DBCO (DBCO-Cy5) hexafluorophosphate is a low-toxicity azide reactive probe (NIR fluorescent dye), for imaging azide-labeled biomolecules via a copper-free "click-through" reaction. Cyanine5 DBCO hexafluorophosphate has no apparent cytotoxicity or animal toxicity and shows no damage to the physiological functions of cells other than the target cells (azide-labeled cells). Cyanine5 DBCO hexafluorophosphate can be used to label and track cells in vitro and in vivo (Ex=635 nm, Em=650-700 nm).
    Cyanine5 DBCO hexafluorophosphate
  • HY-D0155
    Zinpyr-1
    Zinpyr-1, a zinc-responsive fluorescent indicator that has found wide applicability for the detection of biological mobile zinc. Zinpyr-1 undergoes a shift in excitation from 515 to 507 nm with increasing zinc concentrations using an emission filter over 513-558 nm.
    Zinpyr-1
  • HY-D1063
    IR-780
    		99.82%
    IR780 is a prototypic NIR heptamethine cyanine agent, with a high molar extinction coefficient. The maximum excitation wavelength of IR780 was 777-780 nm, and the maximum emission wavelength was 798-823 nm. IR780 can be used in cancer PTT/PDT and imaging.
    IR-780
  • HY-D0970
    Diphenyl Blue
    Diphenyl Blue (Trypan Blue) is a cell active dye, the most commonly used dye for the identification of dead cells, of en used to test cell membrane integrity and cell viability. Diphenyl Blue staining is one of the methods for tissue and cell culture. When cells are deactivated or have incomplete cell membranes, Diphenyl Blue can stain them Blue. Normal living cells with intact cell membranes reject Diphenyl blue and do not stain them blue. However, macrophages are capable of phagocytosis of Diphenyl Blue, so it can be used as a living stain for macrophages.
    Diphenyl Blue
  • HY-D0720
    Lucigenin
    		99.12%
    Lucigenin is a chemiluminescence probe. Lucigenin can be used to detect the production of endogenous superoxide anion radical (O2-). Lucigenin is extremely sensitive to chloride ions, while it combined with chloride ions, the fluorescence will be quenched. Lucigenin also can be used as a chloride indicator. Ex/Em=455/505 nm.
    Lucigenin
  • HY-D2449
    DQ-BSA-RED
    DQ-BSA-Red is a bovine serum albumin labeled with a red fluorescent dye that can be used to detect lysosomal activity. The excitation wavelength and emission wavelength of DQ-BSA-Red are 590 nm and 620 nm, respectively. The BSA molecule in DQ-BSA-Red is labeled with high concentration of red fluorescent dye in multiple sites, which shows high fluorescence self-inhibition. Once DQ-BSA-RED enters the lysosome, DQ-BSA is cleaved by lysosomal proteases, resulting in unquenched and released fluorescent fragments, emitting bright fluorescence. Inactivated lysosomes are unable to degrade the BSA protein and thus have a lower or even no fluorescent signal.
    DQ-BSA-RED
  • HY-D0027
    7-Amino-4-methylcoumarin
    		99.91%
    7-Amino-4-methylcoumarin belongs to the coumarin class, can be isolated from the endophytic fungus Xylaria sp. and has a broad spectrum of antibacterial activity. 7-Amino-4-methylcoumarin is also commonly used as an important laser dye that emits in the blue region, capable of analyzing glycoprotein monosaccharides and N-linked oligosaccharides, and is also utilized in tissue pathology analysis, enzyme activity measurement, and copper ion detection. The excitation wavelength and emission wavelength are 351 nm and 430 nm, respectively.
    7-Amino-4-methylcoumarin
  • HY-D0286
    Fluorol Yellow 088
    		≥98.0%
    Fluorol Yellow 088 is a fluorescent dye that can be used as a biological material or an organic compound for life science research. Fluorol Yellow 088 is suitable for lipid staining in plant tissues, particularly for the fluorescence imaging of suberized cell walls and hydrophobic structures, with an excitation wavelength of 365 nm and an emission wavelength of ≥420 nm.
    Fluorol Yellow 088
  • HY-D0251
    Fluorescein
    Fluorescein (Uranine) is widely used as a fluorescent tracer in medicinal and biological applications and tumor infected tissues tracer. Fluorescein (Uranine) is a representative green fluorophore that has been widely used as a scaffold of practically useful green fluorescent probes.
    Fluorescein
Cat. No. Product Name / Synonyms Application Reactivity