Boniek G. Vaz

Universidade Estadual de Campinas (UNICAMP)

2 papers in the library · 37 citations · publishing 2012-2016

Papers

LSD and 9,10‐dihydro‐LSD Analyses in Street Drug Blotter Samples via Easy Ambient Sonic‐Spray Ionization MassSpectrometry (EASI‐MS)

Journal of Forensic Sciences August 6, 2012 Wanderson Romão, Bruno Duarte Sabino, Maria Izabel M. S. Bueno et al. 24 citations

Forensic identification of LSD typically relies on the Ehrlich spot test, which is nonspecific and cannot distinguish LSD from the uncontrolled substance 9,10-dihydro-LSD, recently found in Brazilian blotters. This work used easy ambient sonic-spray ionization mass spectrometry (EASI-MS) to characterize LSD and 9,10-dihydro-LSD directly from blotter surfaces. Of 41 blotters analyzed by EASI-MS, 28 tested positive for LSD, seven for 9,10-dihydro-LSD, and six for neither. Results were confirmed by high-performance liquid chromatography. Combining thin-layer chromatography with EASI-MS proved a simple, powerful screening tool for forensic drug analysis.

DOI: 10.1111/j.1556-4029.2012.02237.x Designer drug Chromatography Chemistry Mass spectrometry +1

2-(4-IODO-2,5-DIMETOXIFENIL)-N-[(2-METOXIFENIL)METIL]ETAMINA OU 25I-NBOME: CARACTERIZAÇÃO QUÍMICA DE UMA DESIGNER DRUG

Química Nova May 9, 2016 Pâmella F. Dos Santos, Lindamara M. Souza, Bianca B. Merlo et al. 13 citations

A new designer drug, 25I-NBOMe, was chemically profiled using multiple analytical techniques. Thin layer chromatography identified spots for 25C-, 25B-, and 25I-NBOMe compounds, all with the same retention factor of about 0.50, but no spots for 2,5-dimethoxy-4-bromoamphetamine, 2,5-dimethoxy-4-chloroamphetamine, or lysergic acid diethylamide. ATR-FTIR preserved the material's physical-chemical properties, while GC-MS and ESI-MS offered better analytical selectivity. ESI(+)FT-ICR MS determined the exact mass (m/z 428.1706 for [M + H]+), molecular formula (C18H22INO3), degree of unsaturation (DBE = 8), and chemical structure via collision-induced dissociation. ATR-FTIR and CID results suggested the presence of isomers, with a second structure proposed as an isomer of 25I-NBOMe.

DOI: 10.5935/0100-4042.20150178 Full text Designer drugs 25i-nbome Ccd Atr-ftir +2