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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-D1849
    Cy3B NHS ester
    Cy3B NHS ester is a fluorescent dye compound that is commonly used in biomarking and fluorescent labeling experiments, especially for labeling biomolecules containing amino functional groups (amine groups), such as proteins, antibodies or peptides.
    Cy3B NHS ester
  • HY-125750
    Coumarin 7
    		99.80%
    Coumarin 7 is a coumarin laser dye in plants in the form of glycosides.
    Coumarin 7
  • HY-D1735
    BODIPY TR Ceramide
    		99.17%
    The Golgi apparatus is composed of flattened vesicles superimposed on each other by unit membranes. The flattened vesicles are round with expanded and perforated edges. The Golgi fluorescent probe is a BODIPY-labeled ceramide derivative, the synthesis of which occurs in the endoplasmic reticulum and can then be transported to the Golgi via ceramide transport protein (CERT) or vesicular translocation, allowing specific labeling of the dye. BODIPY TR Ceramide (Golgi-Red Tracke) is a Golgi-specific fluorescent dye, which can visualise individual cells. Ex/Em=589 nm/616 nm.
    BODIPY TR Ceramide
  • HY-131021
    Janelia Fluor® 549, Azide
    Janelia Fluor? 549, Azide (JF549, Azide) is a fluorescent dye with the absorption maximum (λab (max)) of 549 nm and emission maximum (λem (max)) of 571 nm. Janelia Fluor? products are licensed under U.S. Pat. Nos. 9,933,417, 10,018,624 and 10,161,932 and other patents from Howard Hughes Medical Institute. 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.
    Janelia Fluor® 549, Azide
  • HY-D0916
    Thiazole orange dimer YOYO 1
    Thiazole orange dimer YOYO 1 is a green fluorescent dye used for DNA staining. It belongs to the monomethine cyanine dye family and is a tetracationic homodimer of oxazole yellow (abbreviated as YO, hence the name YOYO), usually provided as a tetraiodide salt. In aqueous buffer, the free YOYO-1 dye (λmax 458 nm; λmax 564 nm) has a very low fluorescence quantum yield, but after binding to double-stranded DNA through diintercalation, the fluorescence intensity is increased by 3200 times (λmax 489 nm; λmax 509 nm).
    Thiazole orange dimer YOYO 1
  • HY-114289
    6-HEX
    		98.89%
    6-HEX is one kind of light base group, the wave length is 532 nm, the wave length is 556 nm. 6-HEX can be used to record nucleic acid sequences and design optical materials. 6-HEX can be used to record nucleic acids at 543 nm radiation, and at 550 nm and 650 nm radiation (5 nm radiation), it can be used to directly locate the base of the cell group.
    6-HEX
  • HY-101887
    Calcein Blue
    Calcein Blue, a membrane-impermeant fluorescent dye, is a coumarin derivative that contains an iminodiacetic acid structure. Calcein Blue is also a metallofluorochromic indicator.
    Calcein Blue
  • HY-D1509
    Phenazine ethosulfate
    		99.81%
    Phenazine ethosulfate is a cationic dye (Ex=390 nm, Em=530 nm) and an electron acceptor that can be used in dye-linked enzyme assays. Phenazine ethosulfate is an intermediate for detecting nitric oxide reducatase (Nors) activity with the presence of ascorbic acid.
    Phenazine ethosulfate
  • HY-158082D
    TRITC-dextran, MW 150000
    TRITC-dextran, MW 150000 (Tetramethyl rhodamine isothiocyanate glucan, MW 150000) is a fluorescent dye, with the molecular weight of 150 kD. TRITC-dextran, MW 150000 exhibits an excitation wavelength of 555 nm. TRITC-dextran, MW 150000 is follicular and vessel penetrate, which is dependent on the molecular weight. TRITC-dextran, MW 150000 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 150000
  • HY-D0853
    DiAzKs
    		≥98.0%
    DiAzKs (H-L-Photo-lysine) is a diazirine-containing lysine amino acid and is a photo-cross-linker. DiAzKs can site-selective incorporated into proteins and is used to crosslink protein-protein interactions in vitro and in living cells. DiAzKs acts as a UV light-activated photo-crosslinking probe.
    DiAzKs
  • HY-D1252
    Fast-TRFS
    Fast-TRFS is a selective and superfast fluorogenic probe of thioredoxin reductase (TrxR). Fast-TRFS can be used for imaging TrxR activity in live cells.
    Fast-TRFS
  • HY-15939
    6-FAM SE
    6-FAM SE (6-carboxyfluorescein succinimidyl ester) is a fluorescent labeling reagent. 6-FAM SE is used for oligonucleotide labeling and DNA sequencing.
    6-FAM SE
  • HY-D2100B
    Cy5-DSPE chloride
    		99.13%
    Cy5-DSPE chloride is a fluorescent phospholipid.
    Cy5-DSPE chloride
  • HY-P0021A
    D-Lys(Z)-Pro-Arg-pNA diacetate
    		99.98%
    D-Lys(Z)-Pro-Arg-pNA diacetate is a chromogenic peptide substrate of activated protein C (APC).
    D-Lys(Z)-Pro-Arg-pNA diacetate
  • HY-P4323A
    Boc-Gln-Arg-Arg-AMC acetate
    		98.41%
    Boc-Gln-Arg-Arg-AMC acetate is a fluorogenic substrate for the determination of protease activity. Boc-Gln-Arg-Arg-AMC undergoes hydrolysis and releases the fluorescent product 7-amino-4-methylcoumarin (AMC). AMC is fluorescent under UV light and can emit a fluorescent signal.
    Boc-Gln-Arg-Arg-AMC acetate
  • HY-129763
    Di-4-ANEPPS
    		99.00%
    Di-4-ANEPPS is a voltage-sensitive dye that acts on voltage-gated ion channels (such as sodium channels) and inhibits sodium current, significantly reducing sodium current density, although specific values like IC50 remain unclear. It mainly binds to the voltage-sensitive regions on the cell membrane, changing its fluorescence properties to reflect membrane potential changes and thus affecting the function of ion channels to exert its activity. This substance can be used in cardiovascular research, such as the electrophysiology of cardiomyocytes, myocardial ischemia, and the effects of drugs on cardiomyocytes. It is of great value in evaluating drug cardiotoxicity and exploring the mechanisms of arrhythmias.
    Di-4-ANEPPS
  • HY-D0925B
    Cy5.5-SE TEA
    Cy5.5-SE TEA (Cyanine5.5 NHS ester TEA) 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. Storage: protect from light.
    Cy5.5-SE TEA
  • HY-120115
    PARPi-FL
    		99.74%
    PARPi-FL (Olaparib-bodipy FL) is a small-molecule fluorescent inhibitor of PARP1 that can specifically bind to PARP1. PARPi-FL can be used as a fluorescent imaging agent for tumor detection, diagnosis, and surgical guidance.
    PARPi-FL
  • HY-D1045
    Dabcyl acid
    		99.34%
    Dabcyl acid (Dabcyl) is a nonfluorescent chromophore and a quencher. Dabcyl acid can be used as molecular beacon nucleic acid probes to recognize and report the presence of specific nucleic acids in homogeneous solutions.
    Dabcyl acid
  • HY-101876
    Rhodamine 800
    		99.72%
    Rhodamine dyes are membrane-permeable cationic fluorescent probes that specifically recognize mitochondrial membrane potentials, thereby attaching to mitochondria and producing bright fluorescence, and at certain concentrations, rhodamine dyes have low toxicity to cells, so they are commonly used to detect mitochondria in animal cells, plant cells, and microorganisms.
    Rhodamine 800
Cat. No. Product Name / Synonyms Application Reactivity