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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-101882
    BCECF
    BCECF is a pH-sensitive fluorescent dye. BCECF allows measurements in the physiological pH range 6.0–8.0. Excitation ratio: 490/440 nm; Emission intensity: 535 nm.
    BCECF
  • HY-D1617
    BODIPY 500/510 C1, C12
    		99.16%
    BODIPY 500/510 C1, C12 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: 500/510 nm. Protect from light, stored at -20℃.
    BODIPY 500/510 C1, C12
  • HY-N1389
    Carmine
    Carmine (Carmine red), a natural red dye extracted from the dried females of the insect Dactylopius coccus var. Costa (cochineal). Carmine is a widely used food additive. Carmine provokes both an immediate hypersensitivity and a delayed systemic response with cutaneous expression.
    Carmine
  • HY-W127703
    Octadecyl Rhodamine B chloride
    		99.58%
    Octadecyl Rhodamine B chloride is an amphiphilic fluorescent probe with both membrane-binding ability and fluorescent properties, which easily forms aggregates in aqueous phase leading to self-quenching. Octadecyl Rhodamine B chloride can be used for cell membrane staining and further applied in membrane biology research. The maximum absorption/emission wavelengths of Octadecyl Rhodamine B chloride monomer in Triton X-100 are 565 nm/585 nm; the absorption peaks of aggregates in water are blue-shifted to 524 nm and 574 nm, with significantly quenched fluorescence.
    Octadecyl Rhodamine B chloride
  • HY-13615A
    EC-17 disodium salt
    EC-17 disodium salt is a folate receptor alpha (FRα) targeting contrast agent with fluorescent properties in the visible light spectrum. The EC-17 maximum excitation and emission wavelengths are 490 nm and 520 nm, respectively.
    EC-17 disodium salt
  • HY-D1122
    Janus green B
    		98.75%
    Janus green B is a supravital stain. Janus green B staining reaction is oxygen dependent, and is reversibly inhibited by cyanide. Janus green B has been used for staining peripheral nerves in live insects, lymphatic vessels of rabbits and mitochondria.
    Janus green B
  • HY-110210
    BODIPY-FL NHS ester
    		99.80%
    BODIPY FL NHS ester (BODIPY FL, SE) is a cell membranes-penatrable amine-reactive fluorescent probe. The maximum excitation/emission wavelength of the BODIPY-FL NHS ester are 502/511 nm, respectively. BODIPY-FL NHS ester has high stability and is insensitive to the polarity, pH and type of solvent, and can maintain stable fluorescence properties under different environmental conditions. BODIPY-FL NHS ester can be used for the synthesis of protease substrates, live cell imaging, protein labeling and immunoassay.
    BODIPY-FL NHS ester
  • HY-P2528
    Enhanced Green Fluorescent Protein (EGFP) (200-208)
    		98.97%
    Enhanced Green Fluorescent Protein (EGFP) (200-208) is a marker gene product derived from the jellyfish Aequorea Victoria. Enhanced Green Fluorescent Protein (EGFP) (200-208) is a common reporter protein and is easy to detect.
    Enhanced Green Fluorescent Protein (EGFP) (200-208)
  • HY-D1249
    Calcein (mixture of isomers)
    Calcein mixture of isomers is a calcium-dependent fluorescent molecule. Calcein mixture of isomers can be used to study bone metabolism (in vivo) and to stain depressed areas (in vitro). Calcein mixture of isomers can also be used for fluorometry and EDTA titration of calcium ion.
    Calcein (mixture of isomers)
  • HY-125623
    MitoPerOx
    		98.14%
    MitoPerOx is a mitochondrial-targeted, lipid peroxidation-indicating fluorescent probe with BODIPY581/591 fluorophores. The triphenylphosphine cation (TPP+) of MitoPerOx can be selectively enriched in mitochondria (depending on membrane potential) and can be used to detect lipid peroxidation in the inner mitochondrial membrane. Under the action of lipid peroxides, the BODIPY581/591 fluorophores of MitoPerOx shift their emission wavelength from 590 nm (reduced state) to 520 nm (oxidized state), and ratiometric detection can be performed at an excitation wavelength of 488 nm. MitoPerOx can specifically monitor the peroxidation of mitochondrial phospholipids (especially cardiolipin) and is used in the study of oxidative stress-related diseases (such as aging, neurodegenerative diseases, and mitochondrial dysfunction)[1][2].
    MitoPerOx
  • HY-15937
    5(6)-FAM SE
    5(6)-FAM SE is a green fluorescent dye widely used for protein labeling.
    5(6)-FAM SE
  • HY-D1491A
    Fast Red Violet LB Zinc chloride
    		99.17%
    Fast Red Violet LB Zinc chloride is a stain that stains tartrate-resistant acid phosphatase (TRAP) and Fast Red Violet LB Zinc chloride can be used to stain alkaline phosphatase (ALP) activity.
    Fast Red Violet LB Zinc chloride
  • HY-D0995
    7-Methyl-6-thioguanosine
    		≥99.0%
    7-Methyl-6-thioguanosine (MESG) is a chromogenic substrate that can be converted to 7-methyl-6-thioguanine in the presence of purine nucleoside phosphorylase and inorganic phosphate. 7-Methyl-6-thioguanosine can be used to quantify inorganic phosphate. 7-Methyl-6-thioguanosine can also be used to determine the activities of purine nucleoside phosphorylase and protein phosphatases.
    7-Methyl-6-thioguanosine
  • HY-D1744
    ICG Maleimide
    ICG Maleimide is thiol reactive near infrared (NIR) fluorescent dye and used to generate a stable fluorescence signal in bioimaging (Ex/Em = 789/813 nm).
    ICG Maleimide
  • HY-108166A
    Hydroxystilbamidine bis(methanesulfonate)
    Hydroxystilbamidine bis(methanesulfonate) is a dye that can bind to DNA and RNA; it's a fluorescent cationic dye, often used as a retrograde neuronal tracer and has also been found to be a potent inhibitor of cellular ribonucleases.
    Hydroxystilbamidine bis(methanesulfonate)
  • HY-D0042
    NBD-Cl
    		99.52%
    NBD-Cl is a nonfluorescent reagent which becomes highly fluorescent after reaction with thiol or amino groups.
    NBD-Cl
  • HY-110250
    DFHBI
    		99.13%
    DFHBI is a small molecule that resembles the chromophore of green fluorescent protein (GFP). DFHBI can be used for imaging RNA in living cells. . Spinach and DFHBI are essentially nonfluorescent when unbound, whereas the Spinach-DFHBI complex is brightly fluorescent both in vitro and in living cells (Ex/Em = 469/501 nm).
    DFHBI
  • HY-121608
    Lumiflavin
    		99.79%
    Lumiflavin (Lumiflavine), a riboflavine analog, causes significant inhibition of riboflavine uptake. Lumiflavin can effectively reduce the riboflavin enrichment in cancer stem-like cells (CSCs) and sensitize the effect of cisplatin Diamminedichloroplatinum (DDP) on CSCs. Lumiflavin is promising for research of ovarian cancer.
    Lumiflavin
  • HY-43520
    BODIPY-FL
    		99.98%
    BODIPY-FL is a green fluorescent dye that can be used to label probes or primers. BODIPY-FL fluorescence can be quenched after interacting with uniquely positioned guanine, making it useful for quantifying specific DNA or RNA molecules. BODIPY-FL-labeled sphingolipid analogs can be used to investigate sphingolipid internalization, transport, and endocytosis in mouse embryonic stem cells. BODIPY-FL-labeled monoterpenes can quickly penetrate bacteria, mammalian, and fungal cells, allowing for the detection of characteristics of a broad spectrum of Gram-positive and Gram-negative bacteria, as well as pathogenic fungi. The maximum absorption wavelength of BODIPY-FL is 505 nm, and the maximum emission wavelength is 513 nm.
    BODIPY-FL
  • HY-B0171
    Antipyrine
    		99.98%
    Antipyrine (Phenazone) is an orally active antipyretic and analgesic. Antipyrine can be used as a probe agent for oxidative agent metabolism. Antipyrine also delays gastric emptying (GE) in rats.
    Antipyrine
Cat. No. Product Name / Synonyms Application Reactivity