May 1, 2021
Younis Abiedalla, Ahmad J. Almalki, Jack DeRuiter et al.
Abstract Twelve secondary amines representing structural analogues of the classic NBOMe category of novel psychoactive substances were prepared and evaluated in GC-EI-MS and vapor phase GC–IR studies. These compounds all contain the methylenedioxy group fused with the aromatic ring of the phenethyl moiety in the classic NBOMe chemical framework. One subseries of analogues, the three...
September 23, 2020
Ahmad J. Almalki, C. Clark, Younis Abiedalla et al.
Abstract The substituted phenethylamine analogues in this study are derivatives of N-(2-methoxybenzyl)-4-bromo-2,5-dimethoxyphenethylamine (25B-NBOMe) having the reverse substitution pattern for the two aromatic rings. These compounds contain only a single methoxy substituent in the phenethylamine part, and a bromodimethoxy substitution pattern in the benzyl portion. The regioisomers were...
Rapid communications in mass spectrometry : RCM
February 28, 2020
Ahmad J. Almalki, C Randall Clark, Jack DeRuiter
The halogenated derivatives of N-(2-methoxy)benzyl-2,5-dimethoxyphenethylamine (25-NBOMe) such as the 4-bromo analogue (25B-NBOMe) represent a new class of hallucinogenic or psychedelic drugs. The purpose of this study was to determine the role of the electron-donating groups (halogen and dimethoxy) in the pathway of decomposition for the distonic molecular radical cation in the electron...
December 1, 2019
Ahmad J. Almalki, L. Smith, C. Clark et al.
Abstract The common NBOMe drugs of abuse, N-(2-methoxybenzyl)-4-iodo-2,5-dimethoxyphenethylamine (25I-NBOMe) and N-(2-methoxybenzyl)-4-bromo-2,5-dimethoxyphenethylamine (25B-NBOMe), can be differentiated from their corresponding 3- and 4-methoxybenzyl isomers by gas chromatography with vapor phase infrared spectroscopy. The mass spectra for these regioisomeric compounds are essentially...
Journal of Chromatographic Science
October 1, 2010
Tamer Awad, Tarek Belal, Hadir M Maher et al.
Three regioisomeric 3,4-methylenedioxyphenethylamines having the same molecular weight and major mass spectral fragments of equal mass have been reported as drugs of abuse in forensic studies in recent years. These compounds are 3,4-methylenedioxy-N-ethylamphetamine (MDEA), 3,4-methylenedioxy-N,N-dimethylamphetamine (MDMMA), and N-methyl-1-(3,4-methylenedioxyphenyl)-2-butanamine (MBDB). A...
Journal of Chromatographic Science
May 1, 2007
A. L. Thigpen, Jack DeRuiter, Charles R. Clark
9 citations
Three regioisomeric 3,4-methylenedioxyphenethylamines having the same molecular weight and major mass spectral fragments of equal mass have been reported as drugs of abuse in forensic studies in recent years. These compounds are 3,4-methylenedioxy-N-ethylamphetamine (MDEA), 3,4-methylenedioxy-N-N-dimethylamphetamine (MDMMA), and N-methyl-1-(3,4-methylenedioxyphenyl)-2-butanamine (MBDB). The...