Results 11 to 20 of about 67,204 (291)
Determination of the lipophilicity of 2'-hydroxychalcones by RP HPLC method [PDF]
Hemijska Industrija, 2016 Lipophilicity of twelve synthesized chalcones, whose ring B is a ortho, meta or para monosubstituted with alkyl, oxyalkyl groups or halogens was determined by reverse phase liquid chromatography, using octadecyl-functionalized (RP-18) silica gel
Bašić Jasmina V. +4 more
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Angewandte Chemie International Edition, Volume 62, Issue 3, January 16, 2023., 2023 A Mn catalyst has been rationally redesigned to repel sp3hybridised substituents while attracting sp2 substituents, and hence enable enantioselective hydrogenation of cyclic ketones. DFT calculations enable a robust prediction of the level of enantiocontrol across a range of substrates.
Conor L. Oates +3 more
wiley +1 more source
The Role of Cytochrome P450 AbyV in the Final Stages of Abyssomicin C Biosynthesis
Angewandte Chemie International Edition, Volume 62, Issue 3, January 16, 2023., 2023 The cytochrome P450 enzyme AbyV catalyses a key epoxidation in the final stages of the biosynthesis of the spirotetronate antibiotic abyssomicin C. Combining structural and computational data with a 13C labelling strategy was found to be a powerful approach to interrogate the biotransformation and determine the precise function of the enzyme.
Andrew J. Devine +13 more
wiley +1 more source
ANALYSIS OF INSECTICIDE GELS CONTAINING FIPRONIL BY RP HPLC
Тонкие химические технологии, 2018 The article considers fipronil determination by the method of RP HPLC in isocratic mode with ultraviolet detection at 280 nm. The analysis of insecticidal gels containing fipronil and fipronil mixture with chlorpyriphos was carried out.
L. A. Nosikova, A. N. Kochetov
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Phosphorylated calix[4,8]arenes improve the RP HPLC separation of benzene derivatives
Журнал органічної та фармацевтичної хімії, 2020 Aim. To study the effect of 5,11,17,23-tetrakis(diisopropoxyphosphonyl)-25,26,27,28-tetrapropoxycalix[4]arene and oсtаkis(diethoxyphosphoryloxy)-tert-butylcalix[8]аrene additives to the MeCN – H2O mobile phase (86:14) on the selectivity of the separation
Olga I. Kalchenko +2 more
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The Determination of Food Dyes in Vitamins by RP-HPLC
Molecules, 2016 Reversed-phase high performance liquid chromatography (RP-HPLC) for the determination of five synthetic food dyes (Quinoline Yellow E104, Sunset Yellow E110, Ponceau 4R E124, Tartrazine E102 and Carmine E120) in vitamins was used. The dyes were analyzed within 10 min using a column with stationary phase C 18 (250 mm × 4.6 mm, 5 μm) at 40 °C with ...
Miroslava Smrčová +2 more
openaire +4 more sources
Journal of Chemistry, 2015 RP-HPLC (reversed-phase high-performance liquid chromatography) is widely used to determine the amounts of the different gluten protein types. However, this method is time-consuming, especially at early stages of wheat breeding, when large number of ...
Dragan Živančev +6 more
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Determination of doxazosin mesylate in tablets by RP-HPLC
Indian Journal of Pharmaceutical Sciences, 2011 A simple, precise and rapid RP-HPLC method was developed for the determination of doxazosin mesylate in pharmaceutical formulations. The method was carried out on a Chromolith RP-C(18) column using a mixture of potassium phosphate buffer and methanol (40:60 v/v) and detection was done at 251 nm. The linearity range was 1-5 μg/ml.
Avinash K. Seth +4 more
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Journal of Chromatography Open, 2022 Most commonly used analytical technique for determination of active pharmaceutical ingredients and their impurities in quality control throughout all phases of drug research, development and manufacture is definitely reversed-phase high performance ...
Nevena Djajić +7 more
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Saúde & Tecnologia, 2011 Introdução – A lipofilia é uma das propriedades físico-químicas que mais influencia a capacidade de uma molécula se movimentar através de compartimentos biológicos.
Gonçalo Clemente
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