Mescaline (also known as Mescalin, 3,4,5-Trimethoxyphenethylamine, Mezcaline, 2-(3,4,5-Trimethoxyphenyl)ethanamine, 3,4,5-Trimethoxybenzeneethanamine, 3,4,5-Trimethoxyphenylethylamine, Benzeneethanamine, 3,4,5-trimethoxy-, 200-190-7, Trimethoxyphenethylamine or Tmpea) is a psychedelic substance of the 3,5-dimethoxyphenethylamine class.