The role of diode array ultraviolet detection for the identification of synthetic cathinones.
Sign Up to like & getrecommendations! Published in 2017 at "Drug testing and analysis"
DOI: 10.1002/dta.2163
Abstract: The utility of diode array ultraviolet (UV) detection for aiding in the identification of synthetic cathinones, including different sub-classes and positional isomers is presented. For 35 synthetic cathinones, unique UV spectra are obtained for seven… read more here.
Keywords: synthetic cathinones; positional isomers; identification synthetic; ultraviolet detection ... See more keywords
Potential of chromatography and mass spectrometry for the differentiation of three series of positional isomers of 2-(dimethoxyphenyl)-N-(2-halogenobenzyl)ethanamines.
Sign Up to like & getrecommendations! Published in 2022 at "Drug testing and analysis"
DOI: 10.1002/dta.3232
Abstract: N-(2-Substituted benzyl)-2,5-dimethoxyphenethylamines often cause severe poisonings which has led to their legal prohibition in many countries. At the same time, their positional isomers can be studied as potential therapeutic drugs. In this regard, the search… read more here.
Keywords: differentiation; chromatography mass; mass spectrometry; chromatography ... See more keywords
Differentiation of AB-FUBINACA and its five positional isomers using liquid chromatography–electrospray ionization-linear ion trap mass spectrometry and triple quadrupole mass spectrometry
Sign Up to like & getrecommendations! Published in 2018 at "Forensic Toxicology"
DOI: 10.1007/s11419-018-0410-4
Abstract: PurposePositional isomer differentiation is crucial for forensic analysis. The aim of this study was to differentiate AB-FUBINACA positional isomers using liquid chromatography (LC)–electrospray ionization (ESI)-linear ion trap mass spectrometry (LIT-MS) and LC–ESI-triple quadrupole mass spectrometry… read more here.
Keywords: ion; positional isomers; differentiation; mass spectrometry ... See more keywords
Discrimination of seized drug positional isomers based on statistical comparison of electron-ionization mass spectra
Sign Up to like & getrecommendations! Published in 2020 at "Forensic Chemistry"
DOI: 10.1016/j.forc.2020.100261
Abstract: Abstract Positional isomers of novel psychoactive substances (NPS) present challenges in seized drug identification given the high degree of similarity in the resulting electron-ionization (EI) mass spectra. In this work, a previously developed method, which… read more here.
Keywords: positional isomers; mass spectra; mass; electron ionization ... See more keywords
Prediction of fatty acids in chocolates with emphasis on C18:1 trans fatty acids positional isomers using ATR-FTIR associated with multivariate calibration.
Sign Up to like & getrecommendations! Published in 2020 at "Journal of agricultural and food chemistry"
DOI: 10.1021/acs.jafc.0c04316
Abstract: This work aimed to predict C18:1 TFA isomers as well as other groups of fatty acids (saturated, monounsaturated, polyunsaturated, and total TFA) in chocolates by ATR-FTIR and partial least square regression. The quantification of fatty… read more here.
Keywords: positional isomers; acids chocolates; fatty acids; atr ftir ... See more keywords
Influence of Metal Coordination on the Gas-Phase Chemistry of the Positional Isomers of Fluorobenzoate Complexes.
Sign Up to like & getrecommendations! Published in 2022 at "Journal of the American Society for Mass Spectrometry"
DOI: 10.1021/jasms.2c00236
Abstract: The fragmentation behaviors of the o-, m-, and p-fluorobenzoate complexes of La3+, Ce3+, Fe3+, Cu2+, and UO22+ were investigated by electrospray ionization mass spectrometry, and the corresponding reaction mechanisms were explored by density functional theory… read more here.
Keywords: fluorobenzoate complexes; positional isomers; chemistry; fluoride transfer ... See more keywords
Discrimination and quantitation of halobenzoic acid positional isomers upon Th(IV) coordination by mass spectrometry.
Sign Up to like & getrecommendations! Published in 2022 at "Chemical communications"
DOI: 10.1039/d1cc06925j
Abstract: A fast and reliable mass spectrometry-based method has been developed to discriminate the positional isomers of o-, m- and p-C6H4XCO2H (X = F, Cl and Br). This is based on the distinct fragmentation patterns of… read more here.
Keywords: mass spectrometry; quantitation halobenzoic; discrimination quantitation; positional isomers ... See more keywords
Quantitative Analysis of the Distribution of cis-Eicosenoic Acid Positional Isomers in Marine Fishes from the Indian Ocean.
Sign Up to like & getrecommendations! Published in 2017 at "Journal of oleo science"
DOI: 10.5650/jos.ess16155
Abstract: This study investigated the occurrence and distribution of cis-eicosenoic acid (c-20:1) positional isomers in fishes from the Indian Ocean and compared to those from the Pacific and Atlantic Ocean. Lipids were extracted from the edible… read more here.
Keywords: positional isomers; indian ocean; fishes indian; eicosenoic acid ... See more keywords