Strip the methylenedioxy bridge off MDMA and you've got methamphetamine. Strip it off MDA and you've got amphetamine. The back bone of these drugs are amines.
Right, but anyone with even the most basic knowledge of chemistry understands that simple changes can have humongous effects on the pharmacology and effects of psychoactive chemicals. MDMA is considered a psychedelic amphetamine & empathogen where as methamphetamine is not.
DOI is 2,5-Dimethoxy-4-iodoamphetamine, try comparing that one to regular old amphetamine. You'll be in for a long, long ride

