Author Archives: Dr Spencer

Barbiturates Explained: Barbiturates remain among the most forensically significant classes of sedative-hypnotic compounds in modern analytical toxicology. From the short-acting barbiturate pentobarbital—historically marketed as Nembutal—to the allyl-substituted secobarbital (Seconal) and the brominated brallobarbital (Vesparax), barbiturates continue to surface in postmortem casework, workplace drug testing, and veterinary pharmacokinetic studies. The nembutal barbiturate pentobarbital relationship is one […]

Ketamine, 2-FDCK & 3-MeO-PCP The analytical characterization of novel dissociative substances has become one of the most technically demanding frontiers in modern forensic toxicology. At the center of this evolving analytical landscape sits ketamine—the prototypical arylcyclohexylamine that has generated an entire lineage of designer analogs. When analytical chemists discuss the parent compound, they are referring […]

Forensic Profiling: Differentiating 3-MMC, 4-MMC, and Methylone via Mass Spectrometry The exponential proliferation of novel psychoactive substances (NPS) over the last decade has fundamentally challenged modern forensic toxicology and analytical chemistry. Among the most complex and frequently encountered classes of NPS are the synthetic cathinones—beta-keto phenethylamines that share a core structural scaffold but exhibit vastly […]

Research Chemicals Explained: The global landscape of analytical chemistry and forensic toxicology is defined by the rapid emergence of novel molecular entities. For laboratory directors, clinical toxicologists, and institutional procurement officers, understanding the precise definition, legal status, and analytical handling of research chemicals is no longer optional—it is the foundation of operational compliance. Unlike legacy […]

Mephedrone (4-MMC) Explained: The global proliferation of novel psychoactive substances (NPS) has placed synthetic cathinones at the center of modern forensic toxicology, and mephedrone remains the class-defining compound. Chemically identified as 4-methylmethcathinone (4-MMC), mephedrone is a beta-keto phenethylamine whose structural scaffold continues to anchor cathinone screening panels in crime labs, workplace testing programs, and customs […]