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Testing for SGT-151 (CUMYL-PEGACLONE) and its Metabolites in Blood and Urine after Surreptitious Administration

Frédéric Aknouche, Alice Ameline, Camille Richeval, Anne-Julie Schapira, Audrey Coulon, Christophe Maruejouls, Jean-Michel Gaulier, Pascal Kintz
Journal of Analytical Toxicology 2019 March 16
The authors aim to report a case of surreptitious administration of a synthetic cannabinoid (SC) and the subsequent toxicological investigations to be able to document accurately the case for submission at a hearing. A dealer gave surreptitiously a substance to two juvenile migrants who experienced shakings and faintness. The laboratory received a blood sample from each of the two victims, who, according to the investigators, were probably exposed to SGT-151, a SC, also known as CUMYL-PEGACLONE. Blood and urine specimens from the dealer, who claimed being a user of SGT-151 were received at the same time. To characterize the metabolites of SGT-151, the drug was incubated with a pool of human hepatic microsomes and the cofactors required to ensure the functioning of the main Phase I and Phase II enzymes. The incubation media were analyzed by liquid chromatography coupled to high-resolution mass spectrometry. The metabolites identified following transformation by hepatic microsomes were mostly N-dealkylated SGT-151, mono-hydroxylated SGT-151 and di-hydroxylated SGT-151. The presence of SGT-151 (5.4 ng/mL) and its metabolite, N-dealkyl SGT-151, was confirmed in the dealer's blood. Two metabolites of SGT-151 (OH-SGT-151, diOH-SGT-151) were detected in the dealer's urine. SGT-151 (~1 ng/mL) and its metabolite N-dealkyl SGT-151 were detected in the blood samples of the two victims.


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