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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-112498A
    Cy3 NHS ester bromide
    Cy3 NHS ester bromide 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.
    Cy3 NHS ester bromide
  • HY-D2858A
    8-arm-PEG-FITC (MW 20000)
    8-arm-PEG-FITC (MW 20000) is a fluorescent dye composed of FITC (HY-66019) and eight-arm polyethylene glycol (8-Arm PEG). 8-arm-PEG-FITC can be used to modify proteins, peptides and other materials with active groups (Ex/Em = 488/525 nm).
    8-arm-PEG-FITC (MW 20000)
  • HY-D2597
    Cy7.5-PEG-biotin (MW 2000)
    Cy7.5 HA biotin (MW 2000) is a biotinylated hyaluronic acid labeled with CY7.5 (HY-D0926). Cy7.5 HA biotin (MW 2000) is widely used for cell imaging and in vivo imaging of shallow tissues (Ex/Em = 770/820 nm).
    Cy7.5-PEG-biotin (MW 2000)
  • HY-W750435
    New Red
    New Red is a color additive that can be used to dye flour as well as meat products.
    New Red
  • HY-W330621
    2-Chloro-4-nitrophenyl-α-D-glucopyranoside
    2-Chloro-4-nitrophenyl-α-D-glucopyranoside (CNP-α-D-Glucopyaoside) as a chromogenic substrate for the enzymatic activity assay of the enzyme that releases CNP from conjugated carbohydrates.
    2-Chloro-4-nitrophenyl-α-D-glucopyranoside
  • HY-D0616
    Pigment Yellow 182
    Pigment Yellow 182 is a disazomethine dye with solid-state fluorescence.a biologically active chemical.
    Pigment Yellow 182
  • HY-D0596
    Pigment Red 188
    Pigment Red 188 is a commonly used commercial dye for bulk coloring of plastics and synthetic fibers and for surface coatings such as paints and inks.
    Pigment Red 188
  • HY-W800692
    BP Fluor 350 azide
    BP Fluor 350 Azide is a blue-fluorescent, azide-activated probe that reacts with terminal alkynes via a copper-catalyzed click reaction (CuAAC). It also reacts with strained cyclooctyne via a copper-free click chemistry reaction to form a stable triazole and does not require Cu-catalyst or elevated temperatures. BP Fluor 350 is a water-soluble, moderately photostable, blue-fluorescent probe optimally excited by the 350 nm laser line. It is routinely used for generation of stable signal in imaging and flow cytometry. The brightness and photostability of blue dyes are best suited to direct imaging of high-abundance targets.
    BP Fluor 350 azide
  • HY-D1310
    Sulfo-cyanine3.5 NHS ester tripotassium
    Sulfo-cyanine3.5 NHS ester tripotassium is a water-soluble cyanine dye that contains NHS ester groups and is amino-reactive.
    Sulfo-cyanine3.5 NHS ester tripotassium
  • HY-D2796C
    FITC-PEG-OH (MW 10000)
    FITC-PEG-OH (MW 10000) is a fluorescent dye composed of polyethylene glycol (PEG), FITC (HY-66019) and a Hydroxyl group. FITC-PEG-OH (MW 10000) can be used for fluorescent labeling and imaging.
    FITC-PEG-OH (MW 10000)
  • HY-D0287
    Solvent red 52
    Solvent red 52 is a red dye. Its series of products, such as Solvent orange 60 (HY-D1177), has been used in dyeing applications of plastic materials.
    Solvent red 52
  • HY-D0345
    Pigment Red 178
    Pigment Red 178 is a commonly used commercial dye for bulk coloring of plastics and synthetic fibers and for surface coatings such as paints and inks.
    Pigment Red 178
  • HY-D2529
    Cy5-PEG-SH (MW 2000)
    Cy5-PEG-SH (MW 2000) is a fluorescent labeling reagent that combines Cy5 (HY-D0821) fluorescent dye, polyethylene glycol (PEG) and sulfhydryl (SH) derivatives, and is suitable for molecular coupling. SH is highly reactive and can react with a variety of functional groups (such as maleimide) to form stable thioether bonds.
    Cy5-PEG-SH (MW 2000)
  • HY-D1303
    Marina blue
    Marina blue 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.
    Marina blue
  • HY-D0497R
    C.I. Disperse orange 37 (Standard)
    C.I. Disperse orange 37 (Standard) is the analytical standard of C.I. Disperse orange 37. This product is intended for research and analytical applications. C.I. Disperse orange 37 is an orange-orange dye commonly used for fiber dyeing.
    C.I. Disperse orange 37 (Standard)
  • HY-D0082R
    7-Diethylamino-4-methylcoumarin (Standard)
    7-Diethylamino-4-methylcoumarin (Standard) is the analytical standard of 7-Diethylamino-4-methylcoumarin. This product is intended for research and analytical applications. 7-Diethylamino-4-methylcoumarin is a laser dye.
    7-Diethylamino-4-methylcoumarin (Standard)
  • HY-171764
    β-Ethoxy-α-ketobutyraldehyde
    β-Ethoxy-α-ketobutyraldehyde is a chemical probe. β-Ethoxy-α-ketobutyraldehyde specifically modifies the N1 and N2 positions of guanine. β-Ethoxy-α-ketobutyraldehyde is mainly used to study the steric protection of single-stranded/double-stranded regions of nucleic acids and protein binding sites. β-Ethoxy-α-ketobutyraldehyde can be used for nucleic acid structure analysis and footprint studies of protein-nucleic acid complexes.
    β-Ethoxy-α-ketobutyraldehyde
  • HY-D2609
    ICG PEG DSPE (MW 1000)
    ICG PEG DSPE (MW 1000) is a PEG phospholipid with Indocyanine green (ICG) (HY-D0711) dye used in protein/nucelic acid labeling and fluorescence microscopy. ICG PEG DSPE (MW 1000) can self-assemble in aqueous solution to form micelles/lipid bilayer and used to prepare liposomes or nanoparticles for nutrients delivery such as mRNA or DNA vaccine (Ex/Em = 785/813 nm).
    ICG PEG DSPE (MW 1000)
  • HY-D0381
    Disperse Yellow 42
    Disperse Yellow 42 is a yellow dye commonly used for fiber dyeing.
    Disperse Yellow 42
  • HY-D0392
    C. I. Pigment yellow 16
    C. I. Pigment yellow 16 is the most important colorant used to add color or change the color of something and is chemically essentially unaffected by the carrier or medium into which it is incorporated. It can be widely used in textile, medicine, food, cosmetics, plastics, paint, ink, photography and paper industries.
    C. I. Pigment yellow 16
Cat. No. Product Name / Synonyms Application Reactivity