446 Results for "

staining

" in MedChemExpress (MCE) Product Catalog:
Products (446)

446 Results for "staining" in MCE Product Catalog:

Leucocrystal violet (Standard)
Leucocrystal violet (Standard)
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Cat. No.: HY-D0233R
CAS No.: 603-48-5
Leucocrystal violet (Standard) is the analytical standard of Leucocrystal violet (HY-D0233). This product is intended for research and analytical applications. Leucocrystal violet is a cationic triarylmethane dye. Leucocrystal violet generates a colored purple product in the presence of hydrogen peroxide and horseradish peroxidase, or when oxidized by periodate under the catalysis of horseradish peroxidase. Leucocrystal violet serves as a chromogenic reagent for the determination of submicrogram-level hydrogen peroxide, with no interference from tryptophan, persulfate or chromate. Leucocrystal violet reacts with blood to produce a purple/violet color in the presence of hydrogen peroxide; it forms a very weak fluorophore when acting with whole blood in an unbuffered solution, with a maximum absorption wavelength of 630 nm and a maximum fluorescence emission wavelength of 665 nm upon excitation at 630 nm. Leucocrystal violet is widely used for staining blood residues on porous and non-porous materials.
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Sudan IV-d6
Sudan IV-d6
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Cat. No.: HY-D0932S
CAS No.: 1014689-18-9
Synonyms: Solvent Red 24-d6; C.I. 26105-d6
Sudan IV-d6 (Solvent Red 24-d6) is the deuterium labeled Sudan IV(HY-D0932). Sudan IV is an agonist of the aryl hydrocarbon receptor (AhR) that activates downstream signaling pathways and induces CYP1A1 expression. Sudan IV promotes CYP1A1 gene transcription by activating AhR-ARNT heterodimers and binding to exogenous response elements (XREs) on DNA, thereby enhancing drug metabolizing enzyme activity. Sudan IV can be used to study the toxicity mechanisms of industrial dyes and the effects of interactions with serum proteins (such as bovine serum albumin (BSA)) on their distribution in vivo. Sudan IV is a fat-soluble diazo dye that can be used to stain lipids, triglycerides, and lipoproteins on frozen sections .
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5-TAMRA Cadaverine
5-TAMRA Cadaverine
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Cat. No.: HY-D2772
CAS No.: 383912-87-6
5-TAMRA cadaverine can used to modify carboxylic acid group in the presence of activators (e.g. EDC, or DCC) or activated esters (e.g. NHS esters) through a stable amide bond. It also can be reversibly coupled to aldehydes and ketones to form a Schiff base – which can be reduced to a generate stable amine derivative by sodium borohydride (NaBH4) or sodium cyanoborohydride (NaCNH3). Although the mixed isomers of 5(6)-TAMRA cadaverine is a preferred, routinely used orange-fluorescent dye for staining proteins, it is rearly used for labeling peptides and nucleotides. Purification of 5(6)-TAMRA labeled peptide and nucleotides might be troublesome due to significant signal broadening in HPLC purification. Peptides and nucleotides labeled with a single isomer TAMRA usually give better resolution in HPLC purification that is often required in the conjugation processes.
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Thiazole Orange (solution)
Thiazole Orange (solution)
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Cat. No.: HY-DY1097
CAS No.: 107091-89-4
Thiazole Orange (solution) is an asymmetric anthocyanin dye that can be coupled with oligonucleotides (ONs) to prepare fluorescent hybridization probes. Thiazole Orange has been widely used in biomolecular detection and staining of DNA/ RNA in gels and can be used for reticulocyte analysis. Thiazole orange generates a significant fluorescence enhancement and high quantum yield when it binds with nucleic acids, especially RNA. Thiazole orange can permeate living cell membranes. Thiazole orange can use UV light for detection, but can also be detected with blue light. The excitation and emission of Thiazole orange are λex = 510 nm (488 nm and 470 nm also show strong excitation) and λem = 527 nm, respectively .
Solvent and concentration: DMSO: 10 mM
The 1 mL volume is defined as the base specification. All larger sizes correspond to incremental volumes of this base.
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RADA
RADA
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Cat. No.: HY-D1737
RADA is a fluorescent D-amino acid (FDAA) with high photostability and thermostability, which emits yellow-to-orange fluorescence. RADA shows low outer membrane permeability in wild-type Gram-negative Escherichia coli, but it targets penicillin-binding proteins and L,D-transpeptidases, mimics the interaction between acyl acceptors and enzyme intermediates, and integrates into peptidoglycan during biosynthesis. As a peptidoglycan labeling reagent, RADA metabolically integrates into the nascent peptidoglycan of live bacterial cells, labels the peptidoglycan at the poles and lateral walls of mycobacteria, and enables visualization of peptidoglycan synthesis and remodeling processes. RADA serves as a non-specific stain for fixed cells, is non-toxic to bacterial cells, and its red-shifted excitation/emission spectra reduce phototoxicity. RADA also supports virtual pulse-chase labeling experiments and stochastic optical reconstruction microscopy for sub-diffraction-limited imaging of bacterial cell walls .
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DAPI dihydrochloride (solution)
DAPI dihydrochloride (solution)
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Cat. No.: HY-DY1081
CAS No.: 28718-90-3
Synonyms: 4',6-Diamidino-2-phenylindole dihydrochloride (solution)
DAPI (4',6-Diamidino-2-phenylindole) dihydrochloride (solution) is a DAPI dye. DAPI is a fluorescent dye that binds strongly to DNA. It binds to the AT base pair of the double-stranded DNA minor groove, and one DAPI molecule can occupy three base pair positions. The fluorescence intensity of DAPI molecules bound to double-stranded DNA is increased by about 20 times, and it is commonly observed with fluorescence microscopy, and the amount of DNA can be determined based on the intensity of fluorescence. DAPI cannot penetrate intact cell membranes and is commonly used for staining damaged and fixed cells . DAPI (Compound 3) is an acid-sensing ion channel 3 (ASIC3) inhibitor. DAPI binds to ASIC3 and blocks the channel function. DAPI can be used in the study of chronic pain treatment (Ex/Em = 356/451 nm).
Solvent and concentration: ddH2O: 5 mg/mL
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