140.1432 in α-PHP) also recommended the hydroxylation happened either on the pyrrolidinyl ring or the alkyl chain of the molecule. The exact placement of your hydroxylation couldn't be identified. 4F-MPH has an extremely limited history of recreational use. It was initially formulated being a substitute for ethylphenidate which became illegal https://gregoryouaho.mybloglicious.com/51248999/5-simple-techniques-for-4f-php