2. Signaling Pathways
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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-D2155
    Texas red-X 4-succinimidyl ester
    Texas red-X 4-succinimidyl ester is a derivative of Texas Red (HY-101878), an amphoteric rhodamine red fluorescent dye. Texas Red is widely used to study neuronal morphology and as a cell type-selective fluorescent marker for astrocytes, both in vivo and in slice preparations.
    Texas red-X 4-succinimidyl ester
  • HY-NP068
    Griffonia (Bandeiraea) Simplicifolia Lectin I
    Griffonia (Bandeiraea) Simplicifolia Lectin I (GSL I) is a plant lectin that can be used as a probe to specifically bind biomolecules (such as polysaccharides, peptides, etc.).Griffonia (Bandeiraea) Simplicifolia Lectin I (GSL I) is a biological material or organic compound that can be used in life science research.
    Griffonia (Bandeiraea) Simplicifolia Lectin I
  • HY-D1791
    Vari Fluor 750 SE
    Vari Fluor 750 SE (VF 750 SE) is a dye marker of the Vari Fluor SE series (Ex/Em=747 nm/770 nm). The Vari Fluor SE series of dyes are a class of fluorescent dyes containing NHS ester groups used to label free amines (-NHX) on antibodies, proteins, peptides, amine-modified oligonucleotides and other biomolecules.
    Vari Fluor 750 SE
  • HY-D2289
    CalFluor 647 azide
    CalFluor 647 azide is a fluorogenic azide probe that is activated by Cu-catalyzed or metal-free click reaction. CalFluor 647 azide is not fluorescent until it is reacted with alkynes.
    CalFluor 647 azide
  • HY-W111907
    3,3-Diethylthiacarbocyanine iodide
    		99.57%
    3,3-Diethylthiacarbocyanine iodide is a cyanine dye. 3,3-Diethylthiacarbocyanine iodide can be used in photochemical methods.
    3,3-Diethylthiacarbocyanine iodide
  • HY-W040209
    2-(Naphthalen-1-yl)-5-phenyloxazole
    		99.73%
    2-(Naphthalen-1-yl)-5-phenyloxazole (α-NPO) is an organic fluorescent dye. 2-(Naphthalen-1-yl)-5-phenyloxazole has a nitrogen atom in its structure that can interfere with the nitrogen content from the amination step.
    2-(Naphthalen-1-yl)-5-phenyloxazole
  • HY-110393
    CLR1501
    		98.62%
    CLR1501, a fluorescently labeled CLR1404 analog, is a cancer cell-selective fluorescence compound.
    CLR1501
  • HY-D1886
    Vari Fluor 647 SE
    Vari Fluor 647 SE is a fluorescent dye, SE stands for "succinimidyl ester". Vari Fluor 647 SE belongs to the Vari Fluor family of labeling reagents used in cell and molecular biology research. Vari Fluor 647 SE can react with an amino group to form a covalent bond, thereby introducing Vari Fluor 647 dye into the target molecule or cell. Vari Fluor 647 SE is a reactive dye that produces a fluorescent signal after binding to a target molecule or cell.
    Vari Fluor 647 SE
  • HY-NP0155
    Griffonia (Bandeiraea) Simplicifolia Lectin I (Rhodamine)
    Griffonia (Bandeiraea) Simplicifolia Lectin I (GSL I) Rhodamine is a plant lectin that can be used as a probe to specifically bind biomolecules (such as polysaccharides, peptides, etc.).Griffonia (Bandeiraea) Simplicifolia Lectin I (GSL I) Rhodamine is a biological material or organic compound that can be used in life science research.
    Griffonia (Bandeiraea) Simplicifolia Lectin I (Rhodamine)
  • HY-D0626
    Pigment Yellow 154
    		98.89%
    Pigment Yellow 154 is a fluorescent dye. Pigment Yellow 154 can be used as biological dye.
    Pigment Yellow 154
  • HY-D1257
    Msr-Ratio
    		99.13%
    Msr-Ratio (Msr-green) is a ratiometric fluorescent probe of methionine sulfoxide reductase (λex=375 nm, λem=550 nm). Msr-Ratio is used for monitoring the enzyme activity in vitro and in live cells.
    Msr-Ratio
  • HY-DY1077
    Rhodamine B (solution)
    Rhodamine B (solution) is a staining fluorescent dye, commonly used for dyeing textiles, paper, soap, leather, and agents.
    Solvent and concentration: DMSO: 10 mM
    Rhodamine B (solution)
  • HY-D2546
    Cy5-PEG2000-biotin
    Cy5-PEG2000-biotin is a polyethylene glycol derivative containing Cy5 (HY-D0821) fluorescent dye and polyethylene glycol (PEG) and a Biotin. Biotin can bind with high affinity to streptavidin or avidin. Cy5-PEG2000-biotin plays an important role in the specific capture and detection of biomolecules.
    Cy5-PEG2000-biotin
  • HY-D0798
    Catechol violet
    Catechol violet is an efficient and versatile ligand for Cu(I)-catalyzed C-S coupling reactions. Catechol violet is also a complexometric indicator dye.
    Catechol violet
  • HY-D1773
    YOYO-3
    		98.68%
    YOYO-3 is a trimethine cyanine homodimer dye. YOYO-3 intercalates into AF488-tagged dsDNA molecules at the single-molecule level. YOYO-3 has a greater affinity for DNA than do EB and other Cyanine dyes.
    YOYO-3
  • HY-P3828
    Biotin-myelin basic protein (94-102)
    		99.72%
    Biotin-myelin basic protein (94-102) is a peptide fragemt. Myelin basic protein is responsible for adhesion of the cytosolic surfaces of multilayered compact myelin, it plays an important role in the process of myelination of nerves in the nervous system. Myelin basic protein also acts as a membrane actin-binding protein, which might allow it to participate in transmission of extracellular signals to the cytoskeleton in oligodendrocytes and tight junctions in myelin.
    Biotin-myelin basic protein (94-102)
  • HY-D2149
    Cy5-PEG7-exo-BCN
    Cy5-PEG7-exo-BCN is a dye derivative of Cyanine 5 (Cy5) (HY-D0821) containing 7 PEG units. Cy5-PEG7-exo-BCN contains the lyophilic bidentate macrocyclic ligand BCN, which can further synthesize macrocyclic complexes. In click chemistry, exo-BCN can react with molecules containing azide groups to form stable triazoles in the absence of catalysts.
    Cy5-PEG7-exo-BCN
  • HY-D1541
    Sulfo-Cyanine5.5 alkyne
    Sulfo-Cyanine5.5 alkyne, a near-infrared (NIR) fluorescent dye, is an alkyne modified Sulfo-Cyanine5.5 (Ex=67 8nm, Em=694 nm). Sulfo-Cyanine5.5 alkyne can react with azides for Click Chemistry labeling.
    Sulfo-Cyanine5.5 alkyne
  • HY-D2172
    AF488 carboxylic acid
    AF488 carboxylic acid is a non-reactive AF 488 form. AF488 exhibits the λem and λex wavelength of 520 nm and 470 nm, respectively.
    AF488 carboxylic acid
  • HY-131682
    3-C6-NBD-cholesterol
    		99.0%
    3-C6-NBD-cholesterol is a fluorescent analog of Chol that can be used to measure the kinetics of membrane and intracellular trafficking.
    3-C6-NBD-cholesterol
Cat. No. Product Name / Synonyms Application Reactivity