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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.

Fluorescent Dye Related Products (2679):

Cat. No. Product Name Effect Purity
  • HY-12591B
    D-Luciferin potassium
    D-luciferin is the natural substrate of the enzyme luciferase (Luc) that catalyzes the production of the typical yellowgreen light of fireflies. The 560 nm chemiluminescence from this reaction peaks within seconds, with light output that is proportional to luciferase concentration when the substrate luciferin is present in excess. The luciferase (luc) gene is a popular reporter gene for research and agent screening. Chemiluminescent techniques are virtually background-free, making the luc reporter gene ideal for detecting low-level gene expression. As little as 0.02 pg of luciferase can be reliably measured in a standard scintillation counter. In addition to its role as a reporter of gene expression, luciferase is commonly used in an extremely sensitive assay for ATP[1]. We offer the firefly luciferase (HY-P1004), luciferin free acid (HY-12591A), as well as its water-soluble sodium salts (HY-12591) and potassium salts (HY-12591B) .
  • HY-D1055
    MitoSOX Red
    MitoSOX Red is a live cell fluorescent probe that specifically targets mitochondria and is cell membrane permeable. MitoSOX Red enters mitochondria and is oxidized by superoxide but not by other ROS or RNS generating systems. The oxidized MitoSOX Red then binds to nucleic acids in mitochondria/nucleus, producing strong red fluorescence. MitoSOX Red can be used as a fluorescent indicator to specifically detect superoxide. In addition, superoxide dismutase (SOD) can prevent the oxidation of MitoSOX Red.
    Excitation/emission wavelength: 510/580 nm.
  • HY-D0718
    Nile Red 98.15%
    Nile red (Nile blue oxazone) is a lipophilic stain. Nile red has environment-sensitive fluorescence. Nile red is intensely fluorescent in a lipid-rich environment while it has minimal fluorescence in aqueous media. Nile red is an excellent vital stain for the detection of intracellular lipid droplets by fluorescence microscopy and flow cytof uorometry. Nile red stains intracellular lipid droplets red. The fluorescence wavelength is 559/635 nm[1].
  • HY-W090090
    BODIPY 493/503
    BODIPY493/503 is a BODIPY dye. BODIPY dye is a small molecule dye with strong ultraviolet absorption ability, its fluorescence peak is relatively sharp, and the quantum yield is high. They are relatively insensitive to the polarity and pH of the environment and are relatively stable under different physiological conditions. Due to its structural asymmetry, BODIPY derives a variety of structural products. BODIPY lipid droplet dyes can well pass through the cell membrane into the cell, and localize the neutral lipids in the cell to specifically stain the lipid droplets, which can be used for labeling of live cells and fixed cells[1]. Maximum excitation/emission wavelength: 493/503 nm[1].
  • HY-66019
    FITC 98.60%
    FITC (Fluorescein Isothiocyanate), is one of the green fluorescein derivatives widely used in biology. FITC has the characteristics of high absorptivity and excellent fluorescence quantum yield. The isothiocyanate group of FITC can be combined with amino, sulfhydryl, imidazole, tyrosyl, carbonyl and other groups on the protein, so as to achieve protein labeling including antibodies and lectins. In addition to its use as a protein marker, FITC can also be used as a fluorescent protein tracer to rapidly identify pathogens by labeling antibodies, or for microsequencing of proteins and peptides (HPLC). The maximum excitation wavelength of FITC is 494 nm. Once excited, it fluoresces yellow-green at a maximum emission wavelength of 520 nm.
  • HY-W926978
    Bromophenol red sodium
    Bromophenol red sodium is a chemical indicator. Bromophenol red sodium binds to lysozyme and inhibits its activity against the bacterial cell wall, but not the polysaccharide component of peptidoglycan[1].
  • HY-136672
    (E)-HBT-O
    (E)-HBT-O is an isomer of HBT-O. HBT-O is a fluorescent probe used to monitor subtle pH fluctuations in living cells[1].
  • HY-W750458
    Acid Violet 7
    Acid Violet 7 is an azo dye that can be used to determine the degradation of dyes by various microorganisms[1].
  • HY-D1269
    Rhodamine-N3 chloride
    Rhodamine-N3 chloride is an azide-rhodamine fluorescent dye that can be used to label biomolecules containing alkyne groups[1][2]. Rhodamine-N3 (chloride) 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. Strain-promoted alkyne-azide cycloaddition (SPAAC) can also occur with molecules containing DBCO or BCN groups.
  • HY-151701
    DiSulfo-Cy5 alkyne
    DiSulfo-Cy5 alkyne is a fluorescent dye can be used as a click chemistry reagent[1].
  • HY-135636
    Ponatinib Acid
    Ponatinib Acid, an analogue of Ponatinib, is usually used as a labeled chemical or fluorescent probe. Ponatinib Acid is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.
  • HY-133424A
    Trisulfo-Cy3-acid disodium
    Trisulfo-Cy3-acid disodium is a derivative of Cy3 (Cyanine3) dye. Trisulfo-Cy3-acid disodium contains three sulfonate ions and has improved water solubility.
  • HY-D1029A
    Biotin-11-dUTP trisodium
    Biotin-11-dUTP trisodium is a fluorescent substitute for dTTP.
  • HY-D0066
    7-Diethylaminocoumarin-3-carbohydrazide
    7-Diethylaminocoumarin-3-carbohydrazide is a coumarin. 7-Diethylaminocoumarin-3-carbohydrazide can be used to detect sugar chains and quantify biological carbonyl compounds[1].
  • HY-W151206
    Hydroxy naphthol blue disodium
    Hydroxy naphthol blue disodium, an azo dye, is a metal indicator for calcium and a colorimetric reagent for alkaline earth metal ions ( λmax = 650 nm). In the pH range between 12 and 13, the solution of the indicator is reddish pink in the presence of calcium ion and to deep blue in the presence of disodium EDTA[1].
  • HY-D1030
    Fluorescein Biotin
    Fluorescein Biotin is used as an alternative to radioactive biotin for detecting and quantitating biotin-binding sites by either fluorescence or absorbance; the the fluorescence or absorbance of Fluorescein Biotin is quenched, upon binding to avidin or streptavidin.
  • HY-D2025
    ATTO 550 biotin
    ATTO 550 biotin is a biotin derivative of ATTO 550 with maximum excitation/emission wavelengths: 554/576 nm.
  • HY-D1925
    ATTO 425 maleimide
    ATTO 425 Maleimide is a maleimide ester derivative of ATTO 425, which can be used to label proteins or antibodies. The maximum excitation emission wavelength: 439/489 nm.
  • HY-D1646
    BDP TR methyltetrazine
    BDP TR methyltetrazine is a BDP dye linker containing a methyltetrazine group. BDP TR methyltetrazine is a click chemistry reagent, it contains a Tetrazine group that can undergo an inverse electron demand Diels-Alder reaction (iEDDA) with molecules containing TCO groups.
  • HY-D0099
    Fluorescein-5-thiosemicarbazide
    Fluorescein-5-thiosemicarbazide is a amine containing fluorescent probe that can be used for labeling saccharides and protein carbonyl derivatives[1][2].