Two new psychoactive substances, AL-LAD and LSZ, which are analogs of LSD, were analytically characterized using multiple techniques including NMR, mass spectrometry, and infrared analysis. In male mice, both compounds produced LSD-like behavioral responses in a head-twitch assay, with dose-dependent effects peaking at 200 µg/kg. LSZ was equipotent to LSD (ED50 = 114.2 nmol/kg vs. 132.8 nmol/kg), while AL-LAD was slightly less potent (ED50 = 174.9 nmol/kg). The direct translation of these potency comparisons to humans requires further study. Providing chemical and pharmacological data on emerging substances aids research communities focused on substance use and forensic identification.
A new dissociative anesthetic, 3-MeO-PCMo, a morpholine analogue of 3-MeO-PCP, was synthesized and characterized along with five related compounds. All six arylcyclohexylmorpholines were analyzed using chromatographic, mass spectrometric, and spectroscopic techniques, allowing differentiation of positional isomers. In vitro binding studies in rat forebrain preparations showed moderate affinity for the N-methyl-D-aspartate receptor (NMDAR), with 3-Me-PCMo having the highest affinity, followed by 3-MeO-PCMo. 3-MeO-PCMo had affinity comparable to ketamine and approximately 12-fold lower than PCP. These findings support anecdotal reports of dissociative effects from 3-MeO-PCMo in humans.