Results 221 to 230 of about 4,235,645 (403)

Surveillance of Phenibut in Wastewater During a Brazilian Carnival

open access: yesDrug Testing and Analysis, EarlyView.
This study reports the first detection of phenibut in Brazilian wastewater. Phenibut, a substance readily sold online to improve concentration, reaches wastewater treatment plants (WWTPs) after consumption by the population. Samples from WWTPs in the cities of Recife and Olinda in Northeastern Brazil were collected during the world's largest Carnival ...
Bruna R. de S. Gomes   +5 more
wiley   +1 more source

Analysis of triacylglycerol and phospholipid sn‐positional isomers by liquid chromatographic and mass spectrometric methodologies

open access: yesMass Spectrometry Reviews, EarlyView., 2023
Abstract Analysis of triacylglycerol (TG) and phospholipid sn‐positional isomers can be divided into two main categories: (a) direct separation by chromatography or other means such as ion mobility mass spectrometry and (b) quantification of regioisomer ratios by structurally informative fragment ions with mass spectrometric methods.
Mikael Fabritius, Baoru Yang
wiley   +1 more source

Rapid Identification of New Psychoactive Substances in Letters by LA‐APCI‐MS

open access: yesDrug Testing and Analysis, EarlyView.
Laser ablation coupled to molecular mass spectrometry utilizing a modified atmospheric pressure chemical ionization source was used for the detection of synthetic cannabinoid receptor agonists in infused prison mail samples. ABSTRACT New psychoactive substances (NPS), especially synthetic cannabinoid receptor agonists (SCRA), are increasingly smuggled ...
Mark Wesner   +4 more
wiley   +1 more source

Further Insights Into the Metabolism of LGD‐4033 in Human Urine. Part 2. A New Minor Metabolite With Antagonistic Activity on the Androgen Receptor Can Indicate Recent Substance Intake

open access: yesDrug Testing and Analysis, EarlyView.
A novel early excreted minor metabolite of LGD‐4033 was detected and coded as M8. Its presence was evaluated as an indicator of recent substance intake versus end‐tail findings. Additionally, the agonist/antagonist properties of M8 and other selected LGD‐4033 metabolites on the androgen receptor (AR) were studied using in silico molecular docking and ...
Yiannis S. Angelis   +10 more
wiley   +1 more source

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