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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-43520
    BODIPY-FL
    		99.15%
    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-D1696
    MitoTracker Orange CMTMRos
    MitoTracker Orange CMTMRos is a fluorescent dye that labels mitochondria within live cells utilizing the mitochondrial membrane potential (Ex/Em: 551/576 nm).
    MitoTracker Orange CMTMRos
  • HY-131498
    MOCAc-PLGL(Dpa)AR
    		99.86%
    MOCAc-PLGL(Dpa)AR is a positively charged fluorescent substrate for matrix metalloproteinase-2 (MMP-2), MMP-7 and MMP-9. MOCAc-PLGL(Dpa)AR is a substrate of matrilysin, can be cleaved at the peptide bond between the glycine and leucine residues.
    MOCAc-PLGL(Dpa)AR
  • HY-140947
    TAMRA-Azide-PEG-biotin
    		99.0%
    TAMRA-Azide-PEG-biotin is a dye derivative of TAMRA (HY-135640). TAMRA-Azide-PEG-biotin 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.
    TAMRA-Azide-PEG-biotin
  • HY-137784
    Boc-Val-Pro-Arg-AMC hydrochloride
    		99.43%
    Boc-Val-Pro-Arg-AMC hydrochloride is a sensitive fluorogenic substrate for measuring trypsin-like serine proteases activity.
    Boc-Val-Pro-Arg-AMC hydrochloride
  • HY-D1428
    Di-4-ANEPPDHQ
    		99.00%
    Di-4-ANEPPDHQ is a polarity-sensitive membrane probe with a doubly positive charge that can be used to visualize membrane microdomains in living Arabidopsis cells. Di-4-ANEPPDHQ produces a fluorescence spectrum shift by changing the polarity of the lipid environment after embedding into the cell membrane, thereby quantifying the degree of lipid accumulation. The excitation wavelength of Di-4-ANEPPDHQ is 488 nm, and the emission wavelengths are 560 nm and 650 nm in the liquid ordered and disordered phases, respectively. Di-4-ANEPPDHQ is often used for fluorescence imaging studies of membrane microstructure, lipid order, and membrane tension response in living cells[1][2][3].
    Di-4-ANEPPDHQ
  • HY-123533
    Resorufin
    		99.0%
    Resorufin (NSC 12097) is a highly fluorescent pink dye. Resorufin shows favorable properties such as water solubility, red-shifted absorption/emission signals. Resorufin is used for the detection of ROS/RNS and a second analyte.
    Resorufin
  • HY-D1742
    DRAQ5
    		Chemical
    DRAQ5 is a novel cell permeant and far red-fluorescing DNA probe. DRAQ5 excites at a wavelength of 647 nm, close to the Ex, and produces a fluorescence spectrum extending from 665 nm out to beyond 780 nm wavelengths. DRAQ5 fluorescence reflects cellular DNA content. DRAQ5 can be used in combination with FITC and RPE-labelled antibodies, without the need for fluorescence compensation.
    DRAQ5
  • HY-150086
    Copper Fluor-4
    		98.44%
    Copper Fluor-4 (CF4) is a Cu+-specific fluorescent probe based on a rhodol dye scaffold. Copper Fluor-4 has high copper selectivity with a Kd value of 2.9×10−13 M, particularly over zinc and iron, as well as abundant cellular alkali and alkaline earth metals. Copper Fluor-4 is stable in a physiologically relevant pH regime between 6 and 8 (wavelengths of 415 nm for excitation and 660 nm for emission).
    Copper Fluor-4
  • HY-158082
    TRITC-dextran, MW 4000
    TRITC-dextran MW 4000 (Tetramethyl rhodamine isothiocyanate glucan, MW 4000) is a fluorescent dye, with the molecular weight of 4 kD. TRITC-dextran MW 4000 exhibits an excitation wavelength of 555 nm. TRITC-dextran MW 4000 is vessel penetrate, which could label blood plasma to visualize the vasculature. TRITC-dextran MW 4000 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 4000
  • 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-D0073
    2,3-Diaminonaphthalene
    		98.00%
    2,3 Diaminonaphthalene is a highly selective colorimetric and fluorometric reagent for selenium ion detection and also used for the fluorometric determination of nitrite.
    2,3-Diaminonaphthalene
  • 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-D1807
    Vari Fluor 555-Streptavidin
    Vari Fluor 555-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=555 nm/565 nm.
    Vari Fluor 555-Streptavidin
  • HY-D0084
    3,3'-Dihexyloxacarbocyanine iodide
    		99.62%
    3,3'-Dihexyloxacarbocyanine iodide is a carbocyanine dye which can be used to monitor changes in mitochondrial membrane potential.
    3,3'-Dihexyloxacarbocyanine iodide
  • HY-D0715
    Fluorescamine
    		≥98.0%
    Fluorescamine is a spirocyclic compound that is non-fluorescent. Fluorescamine reacts rapidly with primary amine groups in proteins under alkaline conditions to generate products with strong fluorescence (Ex/Em: 390/475 nm). Fluorescamine can be used to detect amine-containing compounds, including amino acids, peptides, and proteins.
    Fluorescamine
  • HY-118155
    9-Amino-6-chloro-2-methoxyacridine
    		99.56%
    9-Amino-6-chloro-2-methoxyacridine is a pH sensitive fluorescent probe. 9-Amino-6-chloro-2-methoxyacridine has been frequently used to measure changes in vacuolar pH when a specific substrate crosses the tonoplast through a putative H+/solute antiport system.
    9-Amino-6-chloro-2-methoxyacridine
  • HY-111377
    Amine-PEG3-Biotin
    		99.79%
    Amine-PEG3-Biotin is a signal amplification label containing a biotin group and a terminal primary amine group.
    Amine-PEG3-Biotin
  • HY-D1781
    NTPAN-MI
    		98.78%
    NTPAN-MI is a fluorescent probe (excitation wavelength: 405 nm). NTPAN-MI is selectively activated after labeling unfolded proteins with exposed thiols, thereby reporting the degree of protein homeostasis.
    NTPAN-MI
  • 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
Cat. No. Product Name / Synonyms Application Reactivity