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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-D0824
    CY7-SE
    		≥98.0%
    CY7-SE 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.
    CY7-SE
  • HY-D0933
    Auramine O
    Auramine O is a yellow fluorescent dye. Auramine O is used to detect amyloid fibrils. Auramine O promotes lung malignancy. Auramine O is also used to determine algal cell viability and stain acid-fast bacteria.
    Auramine O
  • HY-145519
    Mu-6S-Palm-β-Glc
    		99.9%
    Mu-6S-Palm-β-Glc is a fluorogenic substrate for palmitoyl-protein thioesterase (PPT). Mu-6S-Palm-β-Glc can be used for the research of neuronal ceroid lipofuscin disease in infants.
    Mu-6S-Palm-β-Glc
  • HY-D0075
    DHPDS disodium salt
    		98.61%
    DHPDS disodium salt is a pH-sensitive fluorescent dye. DHPDS disodium salt is used to measure intracellular pH (pHi) from the surface fluorescence of the isolated perfused rat liver.
    DHPDS disodium salt
  • HY-114289
    6-HEX
    		98.45%
    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-D0142
    Pyrene-1,3,6,8-tetrasulfonic acid tetrasodium
    		≥99.0%
    Pyrene-1,3,6,8-tetrasulfonic acid tetrasodium is a fluorescent dye and pH indicator, also as a ligand of multifunctional metal-organic framework. Pyrene-1,3,6,8-tetrasulfonic acid tetrasodium has been used to detect CO2 release. Pyrene-1,3,6,8-tetrasulfonic acid tetrasodium acts as a water-soluble fluorescent dye for fluorescence quenching assays monitoring gramicidin ion-channel activity.
    Pyrene-1,3,6,8-tetrasulfonic acid tetrasodium
  • HY-D1509
    Phenazine ethosulfate
    		99.85%
    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-D0931
    Sudan III
    		98.21%
    Sudan III is a hydrophobic bisazo dye.
    Sudan III
  • HY-136248
    Cyanine 3 Tyramide
    		98.65%
    Cyanine 3 Tyramide (Tyramide-Cy3) is an orange fluorescent dye used as a reporter fluorescent substrate for horseradish peroxidase (HRP)-catalyzed deposition, which serves as a signal amplification technique in immunoassays and in situ nucleic acid hybridization.
    Cyanine 3 Tyramide
  • HY-D1809
    Vari Fluor 405-Streptavidin
    Vari Fluor 405-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=405 nm/431 nm.
    Product Concentration: 0.8 mg/mL
    Vari Fluor 405-Streptavidin
  • HY-169798
    1,9-Dimethylmethylene blue
    		98.06%
    1,9-Dimethylmethylene blue is a photosensitizer, virus inactivator and hemoglobin oxidant derived from methylene blue. When activated, 1,9-Dimethylmethylene blue generates reactive oxygen species including singlet oxygen, and acts as a metachromatic dye. When activated in monomeric or dimeric form, 1,9-Dimethylmethylene blue induces photoinactivation of R17 phage and vesicular stomatitis virus and oxidizes hemoglobin via non-singlet oxygen reactive oxygen species or singlet oxygen-mediated pathways, respectively. The monomeric form, with higher nucleic acid affinity, achieves virus inactivation under specific conditions without forming methemoglobin. 1,9-Dimethylmethylene blue binds to substances such as glycosaminoglycans to produce color changes. Although it is susceptible to interference from non-glycosaminoglycan components in urine, it is still applicable to spectrophotometric analysis for glycosaminoglycan quantification. With these unique photochemical and binding properties, 1,9-Dimethylmethylene blue is widely used in studies of viral infections and related biochemical analyses.
    1,9-Dimethylmethylene blue
  • HY-D0053
    6-ROX
    		98.43%
    6-ROX is a selective fluorescent probe and potential inhibitor of COX-2. 6-ROX binds to the active site of COX-2 and inhibits its conversion of arachidonic acid into prostaglandins. 6-ROX is often used in the field of optical imaging related to tumors and inflammation, and helps detect diseased tissues with high expression of COX-2.
    6-ROX
  • 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-P0021A
    D-Lys(Z)-Pro-Arg-pNA diacetate
    		99.07%
    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-W878943
    FAM azide, 5-isomer
    FAM azide, 5-isomer is a Click Chemistry labeling reagent.
    FAM azide, 5-isomer
  • HY-124298
    Calcein Blue AM
    		99.00%
    Calcein Blue AM is a cellular dye agent.
    Calcein Blue AM
  • HY-107869
    Isoindigo
    		99.67%
    Isoindigo acts as the acceptor unit in donor-acceptor (D-A) conjugated polymers and belongs to the indigo dye family. Isoindigo contains two lactam rings and exhibits strong electron-withdrawing properties. Isoindigo can be used in dyeing and pigment preparation. Isoindigo shows high mobility and excellent environmental stability in field-effect transistors (FETs). Isoindigo possesses the activity to inhibit tumor cell proliferation and has certain anti-tumor activity.
    Isoindigo
  • HY-121075
    Alizarin complexone
    		98.0%
    Alizarin complexone is a calcium-binding fluorescent dye. Alizarin complexone stains mineralized areas of bone by binding to calcium crystals. Alizarin complexone inhibits the reverse transcriptase activity of RAV-2, HIV-1, and RSV with IC50 values of 3.8 μg/mL, 45 μg/mL, and 100 μg/mL, respectively. Alizarin complexone exhibits antiviral activity against HIV-1 and RSV. Alizarin complexone delays RSV-induced tumor induction in chickens.
    Alizarin complexone
  • HY-W127770
    Pararosaniline hydrochloride
    		98.28%
    Pararosaniline hydrochloride (Basic red 9) is a pH-responsive basic dye, as a biological stain to track certain proteins. The pH of the acidified Pararosaniline hydrochloride reagent has a significant effect on the color and the maximum absorption wavelength (λmax) of the reaction system, with its optimum pH 0.48 and a λmax at 549 nm. Pararosaniline hydrochloride is also a strong modifier of RNA splicing. Pararosaniline hydrochloride has been used in the analysis of SO2 and formaldehyde and staining of bacteria or other organisms. Pararosaniline hydrochloride is extensively used in industries like textile, printing, paper, cosmetic, and leather.
    Pararosaniline hydrochloride
  • HY-D1490
    Fast red TR salt hemizinc chloride
    Fast red TR salt hemi (zinc chloride) is a diazonium dye with red color.
    Fast red TR salt hemizinc chloride
Cat. No. Product Name / Synonyms Application Reactivity