TetramethoxyphenethylamineTetramethoxyphenethylamines are a group of positional isomers of the psychedelic cactus alkaloid mescaline. Some of them are described in the book PiHKAL by Alexander Shulgin and Ann Shulgin. 2,3,4,5-Tetramethoxyphenethylamine TeMPEA-2 TeMPEA-3 BOM (drug)