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-D0421
    C.I. Solvent yellow 18
    C.I. Solvent yellow 18 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. Solvent yellow 18
  • HY-D2599
    ICG PEG NH2 (MW 1000)
    ICG PEG NH2 (MW 1000) is a polyethylene glycol derivative containing Indocyanine green (ICG) (HY-D0711) fluorescent dye and polyethylene glycol (PEG) and an amino group. The Indocyanine green fluorophore is commonly used in applications such as immunolabeling, nucleic acid labeling, fluorescence microscopy, and flow cytometry. ICG PEG NH2 (MW 1000) can be used for fluorescence imaging, fluorescence tracing and fluorescence labeling (Ex/Em = 785/813 nm).
    ICG PEG NH2 (MW 1000)
  • HY-D0385
    Pigment Yellow 95
    Pigment Yellow 95 is a disazomethine dye with solid-state fluorescence.a biologically active chemical.
    Pigment Yellow 95
  • HY-172164B
    FITC-lysine-dextran (MW 70kDa)
    FITC-lysine-dextran, 70kDa is a dextran with lysine coupling with a fluorescent group FITC (HY-66019). Lysine-dextran exhibits higher Glu-plasminogen binding ability than dextran alone.
    FITC-lysine-dextran (MW 70kDa)
  • HY-D2538
    Cy3-PEG-N3 (MW 3400)
    Cy3-PEG-N3 (MW 3400) is a Cy3 (HY-D0822)-azide fluorescent dye used to label for protein and nucleic acid. Cy3-PEG-N3 (MW 3400) 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.
    Cy3-PEG-N3 (MW 3400)
  • HY-D0702
    Solvent red 195
    Solvent red 195 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 195
  • HY-D2768
    BP Fluor 430 NHS ester
    BP Fluor 430 NHS Ester is a water-soluble, green-fluorescent dye that is often used in multi-color applications, including flow cytometry and super-resolution microscopy using STORM. Its excitation is ideally suited for the 407 nm spectral line of the krypton laser or the 408 nm violet laser diode. BP Fluor 405 conjugates are pH-insensitive from pH 4 to pH 10. The NHS ester (or succinimidyl ester) is the most popular amine reactive group for labeling the primary amines of proteins (Lys), amine-modified oligonucleotides, and other amine-containing molecules. Proteins can be labeled with BP Fluor 430 NHS Ester at high molar ratios without significant self-quenching, leading to brighter conjugates and more sensitive detection.
    BP Fluor 430 NHS ester
  • HY-D0724
    Basic violet 16 phosphate
    Basic violet 16 (phosphate) is an alkaline dye that can be removed from aqueous solutions in intermittent adsorption systems using tree ferns as biosorbents.
    Basic violet 16 phosphate
  • HY-D1366
    Sulfo-Cyanine5.5 carboxylic acid
    Sulfo-Cyanine5.5 carboxylic acidCI Pigment violet 32 is a water-soluble, far-red emitting fluorophore. Due to its four sulfo groups, this dye has a negative charge at neutral pH and is very hydrophilic. As a cyanine dye, sulfo-Cyanine5.5 shows a very low dependence of fluorescence on pH and a very high extinction coefficient.
    Sulfo-Cyanine5.5 carboxylic acid
  • HY-D2290
    Demethoxy-BODIPY TMR NHS ester
    Demethoxy-BODIPY TMR NHS ester is an amine-reactive fluorescent probe, and can be used for the labeling of proteins, peptides, and other molecules.
    Demethoxy-BODIPY TMR NHS ester
  • HY-D0536
    C.I. Acid black 132
    C.I. Acid black 132 is an acidic black dye that can be adsorbed and removed by bentone.
    C.I. Acid black 132
  • HY-128448R
    Carmoisine (Standard)
    Carmoisine (Standard) is the analytical standard of Carmoisine. This product is intended for research and analytical applications. Carmoisine (Azorubine) is an azo dye that can be used as a food additive.
    Carmoisine (Standard)
  • HY-D2475
    2-Amino-5-methoxybenzamidoxime
    2-Amino-5-methoxybenzamidoxime is a chemical probe for detection of ketone, including aromatic ketones, hydroxyl ketones, cyclic ketones and aliphatic ketones. 2-Amino-5-methoxybenzamidoxime exhibits an excitation maximal wavelength of 389 nm and a emission maximal wavelength of 515 nm.
    2-Amino-5-methoxybenzamidoxime
  • HY-W749169
    FAM tetrazine, 5-isomer
    FAM tetrazine, 5-isomer is a universal dye that has terminal tetrazine group. The terminal methyltetrazine enables fast click reactions with TCO (trans-cycloctene).
    FAM tetrazine, 5-isomer
  • HY-D0432
    Direct yellow 34
    Direct yellow 34 is a good dyeing agent for cotton fabrics.
    Direct yellow 34
  • HY-D2649
    Cy5 HA MA (MW 5000)
    Cy5 HA MA (MW 5000) is a hyaluronic acid methacrylate labeled with CY5 (HY-D0821). Cy5 HA MA (MW 5000) is widely used in the fields of biolabeling and imaging, drug delivery and tissue engineering and regenerative medicine (Ex/Em = 633/670 nm).
    Cy5 HA MA (MW 5000)
  • HY-138241
    PBD-BODIPY
    PBD-BODIPY is a probe for the spectrophotometric measurement of autoxidation reactions. Co-autoxidation of the PBD-BODIPY signal carrier and a hydrocarbon co-substrate can be quantified by monitoring loss of absorbance at 591 nm. PBD-BODIPY has been used to measure the activity of radical-trapping antioxidants in cell-free assays. It has also been used as a fluorescent probe for the detection of epoxidation activity.
    PBD-BODIPY
  • HY-D2751
    BP Fluor 488 cadaverine
    BP Fluor 488 Cadaverine is a carboxyl/carbonyl reactive building block used widely to modify carboxylic groups in the presence of activators (e.g. EDC or DCC) or activated esters (e.g. NHS esters) through a stable amide bond. BP Fluor 488 dye has an excitation peak at 499 nm and an emission peak at 520 nm. The conjugates are widely used in microscopy, flow cytometry, and other applications. BP Fluor 488 is a pure 5-sulfonated rhodamine molecule and it eliminates the lot-to-lot variation caused by two isomers ratio differences.
    BP Fluor 488 cadaverine
  • HY-D0636
    Pigment Yellow 155
    Pigment Yellow 155 is a disazomethine dye with solid-state fluorescence.a biologically active chemical.
    Pigment Yellow 155
  • HY-D0511
    Pigment yellow 111
    Pigment yellow 111 is a disazomethine dye with solid-state fluorescence.a biologically active chemical.
    Pigment yellow 111
Cat. No. Product Name / Synonyms Application Reactivity