ArticleForensic toxicology2026
Development of a rapid targeted and non-targeted analysis method for etomidate and its structural analogues by ambient flame ionization mass spectrometry.
Article in Forensic toxicology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
purposeEtomidate, which is a psychoactive drug with an anesthetic effect, is used as a substitute for expensive mainstream drugs. There has been a trend toward abuse of etomidate and its emerging structural analogues now. Faced with a large number of samples, a rapid and effective detection method is needed.
methodsIn this study, ambient flame ionization (AFI) coupled with LTQ-Orbitrap mass spectrometry was used to analyze etomidate and its structural analogues in urine. It can realize detection in less than 0.2 min without sample preparation.
resultsIdeal analysis conditions were obtained by optimizing various parameters and analytical performance was validated. The isomers (isopropoxate and propoxate) can be distinguished by ion abundance ratios. Positive samples (n = 75) were analyzed very efficiently and successfully from plenty of authentic specimens (n = 116). Statistical analysis was conducted on drug types, age, and gender of drug users. A new structural analogue was discovered in one of the samples, which was a very crucial discovery. That meant the market may face with the emergence of new structural analogues.
conclusionsThis study can satisfy both targeted and non-targeted screening, which provides support for timely monitoring and detection of novel drugs and offers a wider range of method choices for forensic laboratories. It can also better cope with the current situation of drug control and combat crimes related to new types of drugs.
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