O-H⋯N, C-H⋯O, and O-H⋯π hydrogen bonds between water and 2-methylpyridine

Journal of Molecular Liquids, Journal Year: 2025, Volume and Issue: unknown, P. 127593 - 127593

Published: April 1, 2025

The Application of Pipette-Tip and Magnetic Dummy-Template Molecularly Imprinted Solid-Phase Extraction Coupled with High-Performance Liquid Chromatography with Diode Array and Spectrofluorimetric Detection for the Determination of Coumarins in Cosmetic Samples

Processes, Journal Year: 2024, Volume and Issue: 12(3), P. 582 - 582

Published: March 14, 2024

In this study, adsorbents based on molecularly imprinted polymers (MIPs) in two solid-phase extraction application forms, pipette tip and magnetic extraction, were used for the selective of coumarins. The pipette-tip reduced solvent volumes; MIP was simple effective phase separation. Parameters affecting such as amount adsorbent, type washing solvent, volume elution times optimized. MIP-based displayed high selectivity efficiency, resulting recoveries ranging from 70.3 to 102.0% (RSD % less than 5.5%) five coumarins under 6,7-dihydroxycoumarin-6-β-D-glucoside, coumarin, 7-methoxycoumarin, 6-methylcoumarin, dicoumarol. extracts analyzed by high-performance liquid chromatography with diode array (DAD) fluorescence (FLD) detectors, reaching limits quantification 0.5 0.9 µg·mL−1 coumarin dicoumarol detected DAD 0.001–0.012 other prohibited when a fragrance (detected FLD). proposed method validated its applicability shown analysis cosmetic samples like shower gel perfume.

Language: Английский

Synthesis, GC-MS, Spectroscopic, chemical absorption nature in various solvent, chemical reactivity, topology analyses and Molecular docking evaluation of 2(4H)-Benzofuranone, 5,6,7,7a-tetrahydro-4,4,7a-trimethyl-, (R): A first principle study

Journal of the Indian Chemical Society, Journal Year: 2024, Volume and Issue: 102(1), P. 101518 - 101518

Published: Dec. 9, 2024

Language: Английский