4B-MAR, 4C-MAR, and 4F-MAR characterize a closely linked team of novel psychoactive substances (NPS) in the two-amino-five-aryloxazoline loved ones. They may be synthetic stimulants that have emerged as designer drugs, created as structural analogs in the dad or mum compound 4-methylaminorex (4-MAR) to avoid current drug scheduling restrictions. Th