GC–IRD methods for the identification of isomeric ethoxyphenethylamines and methoxymethcathinones

T Belal, T Awad, J DeRuiter, CR Clark - Forensic Science International, 2009 - Elsevier
A series of 12 isomeric phenethylamines were evaluated by gas chromatography using
vapor phase infrared spectrophotometric detection. The major mass spectral fragments for …

Differentiation of the regioisomeric 2-, 3-, and 4-trifluoromethylphenylpiperazines (TFMPP) by GC–IRD and GC–MS

HM Maher, T Awad, CR Clark - Forensic science international, 2009 - Elsevier
Gas chromatography with infrared detection (GC–IRD) provides direct confirmatory data for
the identification of the psychoactive designer drug 3-trifluoromethylphenylpiperazine (3 …

Differentiation of methylenedioxybenzylpiperazines (MDBP) by GC–IRD and GC–MS

KM Abdel-Hay, T Awad, J DeRuiter, CR Clark - Forensic science …, 2010 - Elsevier
The substituted benzylpiperazine, 3, 4-methylenedioxybenzylpiperazine (3, 4-MDBP) and its
regioisomer 2, 3-methylenedioxybenzylpiperazine (2, 3-MDBP) have almost identical mass …

GC‐MS and GC‐IRD studies on the six‐ring regioisomeric dimethoxybenzylpiperazines (DMBPs)

KM Abdel‐Hay, J DeRuiter… - Drug Testing and …, 2013 - Wiley Online Library
Gas chromatography with infrared detection (GC‐IRD) provides direct confirmatory data for
the differentiation between the six regioisomeric aromatic ring substituted …

Gas chromatography/mass spectrometry analysis of the six‐ring regioisomeric dimethoxybenzyl‐N‐methylpiperazines (DMBMPs)

KM Abdel‐Hay, J DeRuiter… - Rapid Communications in …, 2013 - Wiley Online Library
RATIONALE Piperazine‐based designer drugs represent a novel class of substances found
in illicit drug samples in the US and abroad. The clandestine production of these substances …

Electron ionization fragmentation studies for a series of 4‐methoxymethylene benzoate esters

Y Abiedalla, CR Clark - Rapid Communications in Mass …, 2023 - Wiley Online Library
Rationale Product ion studies and stable isotope deuterium labeling experiments provide
useful data for understanding the electron ionization (EI)‐mass spectroscopy (MS) …

Differentiation of methylenedioxybenzylpiperazines (MDBPs) and methoxymethylbenzylpiperazines (MMBPs) By GC-IRD and GC–MS

KM Abdel-Hay, T Awad, J DeRuiter, CR Clark - Forensic science …, 2011 - Elsevier
The substituted benzylpiperazines, 3, 4-methylenedioxybenzylpiperazine (3, 4-MDBP), its
regioisomer 2, 3-methylenedioxybenzylpiperazine (2, 3-MDBP) and four isobaric ring …

GC–MS and GC-IRD studies on the six ring regioisomeric dimethoxybenzoylpiperazines (DMBzPs)

KM Abdel-Hay, J DeRuiter, CR Clark - Forensic Science International, 2013 - Elsevier
The dimethoxybenzoylpiperazines show mass spectra characteristic for this set of six
regioisomeric substances and the position of ring substitution for the dimethoxy groups can …

GC–MS and GC–IRD analysis of ring and side chain regioisomers of ethoxyphenethylamines related to the controlled substances MDEA, MDMMA and MBDB

AM Al-Hossaini, T Awad, J DeRuiter… - Forensic science …, 2010 - Elsevier
Three regioisomeric 3, 4-methylenedioxyphenethylamines having the same molecular
weight and major mass spectral fragments of equal mass have been reported as drugs of …

Regioisomeric bromodimethoxy benzyl piperazines related to the designer substance 4-bromo-2, 5-dimethoxybenzylpiperazine: GC–MS and FTIR analysis

KM Abdel-Hay, J DeRuiter, CR Clark - Forensic Science International, 2014 - Elsevier
A series of seven regioisomeric bromodimethoxy benzyl piperazines including the designer
benzylpiperazine (4-bromo-2, 5-dimethoxybenzylpiperazine) were synthesized and their …