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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-D0853
    DiAzKs
    		99.93%
    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-W001952
    6-Bromo-2-naphthol
    		99.75%
    6-Bromo-2-naphthol is an RTP (real-time polymerase chain reaction) probe that forms a 1:1 or 2:1 complex with β-cyclodextrin (β-CD). 6-Bromo-2-naphthol is capable of real-time monitoring of PCR reactions and quantification of specific nucleic acid sequences. RTP probes are a class of small DNA or RNA sequences labeled with fluorescent dyes and quencher molecules, which can be widely used in gene expression analysis, SNP genotyping, and pathogen detection. 6-Bromo-2-naphthol embeds into the cyclodextrin cavity through hydrophobic interactions, inhibits the oxygen quenching effect, and emits a phosphorescent signal at room temperature. 6-Bromo-2-naphthol can also be used as an intermediate for the synthesis of antibacterial azo dyes, and its derivatives show antibacterial activity against Staphylococcus aureus, Escherichia coli and other bacteria.
    6-Bromo-2-naphthol
  • HY-W026772
    Fluorene
    		99.35%
    Fluorene is an orally active polycyclic aromatic hydrocarbon (PAH) and a precursor to other fluorene-based compounds. Fluorene and its derivatives serve as dye precursors for fluorene synthesis. In A549 cells, Fluorene induces oxidative stress and inflammatory responses by increasing ROS and SOD generation, exacerbating lipid peroxidation, modulating antioxidant enzyme activity, and upregulating the expression of pro-inflammatory factors TNF-α and IL-6. In vivo, Fluorene exhibits anxiolytic activity. Fluorene holds potential for research in inflammation and neurological disorders.
    Fluorene
  • HY-D0721
    6-CFDA
    		98.09%
    6-CFDA is a common aliphatic luciferin-line organism. CFDA conducts free diffusion into cells, and then it is hydrolyzed into carboxyl fluorescein (CF) by intracellular non-specific lipase. CF containing portion contains an additional negative charge so that it is better retained in cells, compared to fluorescein dyes.
    6-CFDA
  • HY-W027544
    MCA
    		98.87%
    MCA (7-Methoxycoumarin-4-acetic acid) is a Coumarin (HY-N0709) derivative. MCA quantitates platelet-activating factor (PAF) by high-performance liquid chromatography with fluorescent detection. MCA can modify FRET peptide substrates for analyzing protease activities.
    MCA
  • HY-D0220
    Toluidine Blue
    Toluidine Blue (Toluidine Blue O) is an alkaline quinonimine dye (vivo dye) with high affinity for acidic tissue components, staining nuclei blue and polysaccharides purple. Toluidine Blue shows heterostaining properties for mast cells, mucins and chondrocytes. Toluidine Blue can stain different components of plant tissues and cells in different colours. Toluidine Blue is also used as a diagnostic aid to identify malignant lesions, such as cancer.
    Toluidine Blue
  • 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-D0012
    Bromothymol Blue
    		98.0%
    Bromothymol Blue is a pH indicator.
    Bromothymol Blue
  • HY-NP164
    Concanavalin A-HRP
    Concanavalin A-HRP (Con A-HRP) is a HRP-labled Concanavalin A (HY-P2149). Concanavalin A is a Ca2+/Mn2+-dependent and mannose/glucose-binding plant lectin. Concanavalin A binds the N- and O-glycosylated proteins of head and neck carcinoma cells glycoproteins.
    Concanavalin A-HRP
  • HY-D1092
    DiBAC4(5)
    		99.65%
    DiBaC4(5) is a fluorescent voltage-sensitive dye that can be used to monitor the transmembrane potentials when Papain-dissociated retinal cells from adult zebrafish were exposed to GABAergic ligands. DiBaC4(5) is a potential-sensitive fluorescence dye.
    DiBAC4(5)
  • HY-D1613
    BODIPY FL C5-HPC
    		99.43%
    BODIPY FL C5-HPC is a lipophilic green fluorescent dye (Ex/Em: 500/510 nm).
    BODIPY FL C5-HPC
  • HY-D1800
    Vari Fluor 680 SE
    Vari Fluor 680 SE (VF 680 SE) is a dye marker of the Vari Fluor SE series (Ex/Em=680 nm/700 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 680 SE
  • HY-D1275
    CAY10731
    CAY10731 (compound 3) is a highly selective fluorescent probe for detection of hydrogen sulfide (H2S). CAY10731 is used to monitor exo- and endogenous H2S in both cancer and normal cells. CAY10731 is applied for imaging of H2S in living tissues at variable depths and in nematodes.
    CAY10731
  • HY-D0202
    Arsenazo III
    Arsenazo III is a dye useful for detection of micromolar concentrations of ionized Ca2+. Arsenazo III can be used for determination of thorium, zirconium, uranium and rare earth elements.
    Arsenazo III
  • HY-D0789
    ANTS
    		99.09%
    ANTS is a fluorescent dye (Excitation wavelength: 380 nm; Emission wavelength: 520 nm). ANTS and DPX are encapsulated in liposomes can be an effective approach for measuring membrane leakage.
    ANTS
  • HY-113862
    PHOME
    		99.0%
    PHOME is a fluorogenic substrate for sEH. sEH can hydrolyze the epoxy ring in the PHOME substrate. PHOME can be used for fluorescent epoxide hydrolase assay.
    PHOME
  • HY-145746
    Sulfo-Cy5 azide
    		98.97%
    Sulfo-Cy5 azide is a fluorescent dye and nontargeted contrast agent. Sulfo-Cy5 azide has been used to label and image RNA. Sulfo-Cy5 azide 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.
    Sulfo-Cy5 azide
  • HY-113870
    6-NBDG
    		98.7%
    6-NBDG is a fluorescent glucose analogue, it can be used for fluorescence imaging and monitoring glucose transport and uptake. 6-NBDG can be used as a fluorescent probe for detecting macrophage-rich atherosclerotic plaques.
    6-NBDG
  • HY-W040144
    Bromocresol green
    Bromocresol green is a pH-sensitive triphenylmethane dye commonly used for the determination of protein and albumin in serum. Bromocresol green is a bio-based dye with a yellow-green to blue-green color. Bromocresol green turns yellow (λmax=435 nm, protonated form) when placed in acidic solution (e.g. pH=4.15), and turns blue in basic solution (λmax=615 nm, deprotonated form). Bromocresol green is widely used as a pH indicator in the field of biochemical analysis. In addition, Bromocresol green is also used to detect the concentration of molecules such as creatinine, and to judge the viability of cells.
    Bromocresol green
  • HY-134435
    Z-Arg-AMC hydrochloride
    		99.2%
    Z-Arg-AMC hydrochloride is a fluorogenic substrate for trypsin and papain. Z-Arg-AMC hydrochloride can be used to research activity of trypsin (Ex/Em=355/460 nm).
    Z-Arg-AMC hydrochloride
Cat. No. Product Name / Synonyms Application Reactivity