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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-W400925
    Sulfo-Cy5-N3
    		98.88%
    Sulfo-Cy5-N3 is a click chemistry reagent containing an azide group. Cy5 is a red fluorescent label dye for imaging (Ex/Em=642/670 nm). 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.
    Sulfo-Cy5-N3
  • HY-D0047
    5-CFDA
    		98.22%
    5-CFDA is a common aliphatic luciferin-line organism. CFDA conducts free diffusion into cells, and then it is hydrolyzed into carboxyl fluorescein (CF) by intracellular non-specific lipase. CF containing portion contains an additional negative charge so that it is better retained in cells, compared to fluorescein dyes.
    5-CFDA
  • HY-W116606
    Coumarin boronic acid
    		99.93%
    Coumarin boronic acid is a fluorescent probe. The excitation and emission wavelengths of coumarin boronic acid are set to 360 nm and 430 nm, respectively. Coumarin boronic acid can be used to monitor the formation of amino acid and protein hydroxyl peroxides in real time, which is beneficial for understanding the mechanisms of oxidative stress and protein post-translational modification.
    Coumarin boronic acid
  • HY-129109
    NBD-Pen
    		99.94%
    NBD-Pen is the first fluorescence probe for lipid radicals with high selectivity and sensitivity (λex: 470 nm, λem: 530 nm). NBD-Pen specifically detects lipid derived radicals over other reactive species present in biological systems, including H2O2, ClO-, O2-?, and ?OH. NBD-Pen directly detects lipid radicals in living cells by turn-on fluorescence. NBD-Pen decreases inflammation, apoptosis, and oxidative stress markers. NBD-Pen can be studied in various disease models such as hepatic carcinoma.
    NBD-Pen
  • HY-D0826
    Cy2-SE (iodine)
    		98.11%
    Cy2-SE iodine 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.
    Cy2-SE (iodine)
  • HY-119977
    APF
    		≥99.0%
    APF is a cell-permeable fluorogenic probe to measure hydroxyly radical of ROS. APF is nonfluorescent and produces bright green fluorescence upon reaction with hydroxyl radical. APF can be used to detect intracellular reactive oxygen species (ROS) (Ex/Em=490/525 nm).
    APF
  • HY-W040144
    Bromocresol green
    		99.59%
    Bromocresol green is a pH-sensitive triphenylmethane dye commonly used for the determination of protein and albumin in serum. Bromocresol green is a bio-based dye with a yellow-green to blue-green color. Bromocresol green turns yellow (λmax=435 nm, protonated form) when placed in acidic solution (e.g. pH=4.15), and turns blue in basic solution (λmax=615 nm, deprotonated form). Bromocresol green is widely used as a pH indicator in the field of biochemical analysis. In addition, Bromocresol green is also used to detect the concentration of molecules such as creatinine, and to judge the viability of cells.
    Bromocresol green
  • HY-D1445
    LysoSensor PDMPO
    		98.05%
    PDMPO, a lysosome pH indicator, is an excellent fluorescent acidotropic reagent for fluorescence imaging. PDMPO is a potent tool with which to study acidic organelles of live cells. PDMPO exhibits pH-dependent dual-excitation and dual-emission spectral peaks. PDMPO produces a blue fluorescence in weakly acidic organelles and shifts to yellow in more acidic lysosomes. (Abs=329 nm; Em=440/540 nm).
    LysoSensor PDMPO
  • HY-D1304
    Alexa fluor 488 azide ditriethylamine
    		99.71%
    Alexa fluor 488 azide ditriethylamine 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.
    Alexa fluor 488 azide ditriethylamine
  • HY-D1106
    Py-BODIPY-NHS ester
    		98.98%
    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.
    Py-BODIPY-NHS ester
  • HY-129096
    IDT307
    		99.74%
    IDT307, an analog of the organic cation MPP+, is a specific fluorescent substrate for DAT (fluorescent substrate APP+).
    IDT307
  • HY-D0913
    1-Methyl-7-nitroisatoic anhydride
    		98.0%
    1-Methyl-7-nitroisatoic anhydride (1M7) is a reagent that detects local nucleotide flexibility, for probing 2'-hydroxyl reactivity, can be used for RNA structure analysis.
    1-Methyl-7-nitroisatoic anhydride
  • HY-118315
    L-012
    		99.63%
    L-012 is a luminal-based chemiluminescent probe. L-012 sodium salt can detect NADPH oxidase (Nox)-derived superoxide and nitrogen species (reactive oxygen species (ROS) and reactive nitrogen species (RNS)).
    L-012
  • HY-DY1043
    ER-Tracker Green (solution)
    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.
    Solvent and concentration: DMSO: 1 mM
    ER-Tracker Green (solution)
  • HY-N0335
    Indigo
    		98.0%
    Indigo is a blue dye. Indigo stains cellulose fibers such as cotton. Indigo stains food or biological samples to visualize and quantify the uptake or distribution of substances by organisms.
    Indigo
  • HY-118135
    4-Methylumbelliferyl-α-D-galactopyranoside
    		99.82%
    4-Methylumbelliferyl-α-D-galactopyranoside (4MU-α-Gal), a substrate for α-galactosidase A (GLA), is a blue pro-fluorogenic substrate. 4-Methylumbelliferyl-α-D-galactopyranoside forms two products, galactose and fluorescent 4MU, upon cleavage by GLA.
    4-Methylumbelliferyl-α-D-galactopyranoside
  • HY-D0944
    Giemsa stain
    Giemsa stain is a composite dye composed of methylene azure, methylene blue, eosin and other components. Giemsa stain stains chromatin, nuclear membranes, specific cytoplasmic components and microorganisms. Giemsa stain is used in research on cytological and parasitological staining.
    Giemsa stain
  • HY-DY1004
    BODIPY 493/503 (solution)
    BODIPY 493/503 (solution) 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. Maximum excitation/emission wavelength: 493/503 nm.
    Solvent and concentration: DMSO: 5 mM.
    BODIPY 493/503 (solution)
  • HY-137296
    Lumogallion
    		99.79%
    Lumogallion is a highly sensitive fluorescent reagent for the detection of aluminum, gallium and other metals. Lumogallion has an excitation wavelength of 490 nm and an emission spectrum in the range of 520 nm to 650 nm, with a peak near 580 nm.
    Lumogallion
  • HY-D1375
    Sulfo-Cy5 amine
    		98.06%
    Sulfo-Cy5 amine is a dye derivative of Cyanine 5 (Cy5) (HY-D0821) bearing an amine group. The sulfonate ion increases the water solubility of the compound, making it suitable for use in aqueous solutions. Cy5 is a near-infrared fluorescent dye commonly used in biolabeling and cell imaging. The amine functionality of Sulfo-Cy5 amine can react with carboxyl groups to form covalent bonds. Sulfo-Cy5 amine can bind to biomolecules such as proteins and antibodies to track their location and dynamic changes in biological samples.
    Sulfo-Cy5 amine
Cat. No. Product Name / Synonyms Application Reactivity