“…Among these types of analogues, 2,5-DMA and 4-bromo-2,5-dimethoxyamphetamine (DOB) [1][2][3] were listed in Schedule 1 of the Controlled Substances Act in 1971. 4-Bromo-2,5-dimethoxyphenethylamine (2C-B) [1], which was fi rst synthesized by Alexander Shulgin [4] and appeared on the drug market in the 1980s [5][6][7], is also listed in Schedule 1. In Japan, 2,5-DMA, DOB, and 2C-B are controlled by the Narcotics and Psychotropic Control Law, and 4-iodo-2,5-dimethoxyphenethylamine (2C-I) [8] is controlled only by the Pharmaceutical Affairs Law.…”