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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-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-D1808
    Vari Fluor 488-Streptavidin
    Vari Fluor 488-Streptavidin is a dye marker of Vari Fluor-streptavidin consisting of labeling streptavidin with a Vari Fluor series of fluorescent probes. Streptavidin is a high-affinity tetramer protein, each tetramer consisting of four identical streptavidin subunits. Streptavidin binds to biotin specifically via a reversible non-covalent effect. Streptavidin can achieve rapid and efficient detection of biotin markers, and is often used in immunofluorescence (IF), enzyme-linked immunosorbent assay (ELISA), immunohistochemical staining (IFH), in situ hybridization (ISH) and other experiments. Ex/Em=490 nm/515 nm.
    Vari Fluor 488-Streptavidin
  • HY-D0914
    Fast Green FCF
    		99.95%
    Fast Green FCF is a sea green triarylmethane food dye, with absorption maximum ranging from 622 to 626 nm. Fast Green FCF is widely used as a staining agent like quantitative stain for histones at alkaline pH after acid extraction of DNA, and as a protein stain in electrophoresis. Fast Green FCF is carcinogenic and acts as a presynaptic locus by inhibiting the release of neurotransmitters in the nervous system.
    Fast Green FCF
  • HY-D1314
    FAM azide, 6-isomer
    		99.21%
    FAM azide, 6-isomer (6-FAM azide), a fluorescent dye, is a click chemistry reagent containing an azide group. 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.
    FAM azide, 6-isomer
  • HY-136277
    DFHO
    		99.83%
    DFHO is a fluorogenic ligand of Corn fluorogenic aptamer. The RNA aptamer, Corn binds DFHO with a Kd value of 70 nM and converts it to a fluorescent form, enabling RNA imaging in cells.
    DFHO
  • HY-D0169
    Phenol Red
    		≥98.0%
    Phenol red (Phenolsulfonephthalein) is a pH indicator dye, relying on a distinct color change from pink to yellow in case of a positive reaction .
    Phenol Red
  • HY-D1269
    Rhodamine-N3 chloride
    		99.85%
    Rhodamine-N3 chloride is an azide-rhodamine fluorescent dye that can be used to label biomolecules containing alkyne groups. 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. It can also undergo strain-promoted alkyne-azide cycloaddition (SPAAC) reactions with molecules containing DBCO or BCN groups.
    Rhodamine-N3 chloride
  • HY-110250
    DFHBI
    		99.39%
    DFHBI is a small molecule that resembles the chromophore of green fluorescent protein (GFP). Spinach and DFHBI are essentially nonfluorescent when unbound, whereas the Spinach-DFHBI complex is brightly fluorescent both in vitro and in living cells.
    DFHBI
  • HY-130412
    FlAsH-EDT2
    		≥99.0%
    FlAsH-EDT2 is a protein labeling reagent. FlAsH-EDT2 also is a membrane-permeant fluorogenic biarsenicals. FlAsH-EDT2 binds to CCXXCC motifs and non-specifically to endogenous cysteine-rich proteins. FlAsH-EDT2 can be useful only for labeling those recombinant proteins that express at a very high level.
    FlAsH-EDT2
  • HY-153006
    2,7-Dichlorodihydrofluorescein
    		99.14%
    2,7-Dichlorodihydrofluorescein (DCFH2) is a non-fluorescent probe. 2,7-Dichlorodihydrofluorescein yields the highly fluorescent 2′,7′-dichlorofluorescein (DCF) that can be used for reactive oxygen species measurement.
    2,7-Dichlorodihydrofluorescein
  • 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-D0819A
    CY5-SE triethylamine salt
    		≥98.0%
    Cy5-SE (Cy5 NHS Ester) triethylamine salt is a reactive dye for the labeling of amino-groups in peptides, proteins, and oligonucleotides. Cy5-SE triethylamine salt is ideal for very cost-efficient labeling of soluble proteins, as well as all kinds of peptides and oligonucleotides Ex=649 nm; Em=670 nm).
    CY5-SE triethylamine salt
  • HY-D1594
    BODIPY TR Cadaverine
    		99.05%
    BODIPY TR Cadaverine, a cadaverine derivative, is a red fluorescent dye. BODIPY TR Cadaverine can be used in a a highly sensitive and robust fluorescent displacement assay, which binds to native LPS strongly, specifically recognizing lipid A, and is competitively displaced by compounds displaying an affinity for lipid A.
    BODIPY TR Cadaverine
  • HY-137276
    5-Bromo-3-indolyl β-D-galactopyranoside
    		99.73%
    5-Bromo-3-indolyl β-D-galactopyranoside (Bluo-Gal) is a chromogenic substrate to detect bacterial β-D-galactosidase activity. 5-Bromo-3-indolyl β-D-galactopyranoside is used both to recognize labelled myofibers, and beta-gal positive organelles inside single myofibers.
    5-Bromo-3-indolyl β-D-galactopyranoside
  • 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-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-D1449
    IR-1061
    IR-1061 is a near infrared fluorescent organic dye for in vivo OTN-NIR imaging.
    IR-1061
  • HY-P1005
    Ac-DEVD-AFC
    		99.59%
    Ac-DEVD-AFC is a fluorogenic substrate (λex=400 nm, λem=530 nm).
    Ac-DEVD-AFC
  • HY-D1820
    Vari Fluor 594-Phalloidin
    Vari Fluor 594-Phalloidin is a fluorescent derivative of Phalloidin that specifically labels myofilament proteins and exhibits red fluorescence at 585/609 nm when labeled.
    Vari Fluor 594-Phalloidin
  • HY-D1063
    IR-780
    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
Cat. No. Product Name / Synonyms Application Reactivity