Oasis Method Development 96-well µElution Plate, 2 mg Sorbent per Well, 30 µm, 1/pk Online ordering is limited to specific Distributors. Please sign in orcontact your sales representative. SKU:186005666CV TruView pH Control LCMS Certified Clear Glass, 12 x 32 mm...
ACQUITY UPLC BEH Amide VanGuard Pre-column, 130Å, 1.7 µm, 2.1 mm X 5 mm, 3/pk Les commandes en ligne sont limitées à des distributeurs spécifiques. Veuillez vous connecter ou contacter votre représentant Waters. Référence du produit : 186004475 Oasis Method...
The systematic approach, one of the parts of QbD was use for the analytical method development. Chromatographic separation was carried out with Grace-C18 column (4.6x250 mm, 5-m particle size), mobile phasewas used phosphate buffer and acetonitrile of pH 4.1 adjusted with acetic acid and t...
A Highly Stable Alkyl–Amide Silica-Based Column Packing for Reversed-Phase HPLC of Polar and Ionizable Compounds Researchers have designed a new polar-linked, reversed-phase column for separating polar, ionizable, and espe- cially highly basic compounds with ex- cellent column efficiency and peak...
199 Attempted purification on red agarose indicated that an enzyme activity consuming (54) was bound to the column, but, on elution, this activity did not form medicarpin (6). Rather, an intermediate was formed which could be converted to (6) by a second enzyme present in the flow-...
concentrated under reduced pressure. Silica gel column chromatography afforded the desired product. Method C: KR via integrated chemo- and biocatalytic amide bond synthesis To a solution of nitrile (0.5 mmol, 2.5 equiv) in ~2 wt% TPGS-750-M/KPi buffer (0.1 M, pH = 7.8) ...
Assume 15% of the organic nitrogen in the Elliot soil is terminal amine and the remaining 85% is amide. The molar amine content is the function of the organic nitrogen mass fraction (Table 7.10, column 2) and the mole fraction of total organic nitrogen as amine divided by the atomic mass...
(0.5 mL, 0.20 M) were added the appropriate alcohols (0.12 mmol, 1.2 equiv.). The mixture was stirred for 24–48 h at 30 °C. Upon completion of the reaction (monitored by TLC), the reaction mixture was directly purified by column chromatography on silica gel to afford...
At the time of elution from the column, mass spectrometry was simultaneously carried out and only the eluates containing compounds having desired molecular weights were collected. After evaporating the solvent, compounds of interest having improved purity were obtained. <Synthesis Examples of Compounds: ...
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