140.1432 in α-PHP) also suggested the hydroxylation transpired possibly with the pyrrolidinyl ring or the alkyl chain of the molecule. The precise position on the hydroxylation could not be determined. 4F-MPH has an extremely limited record of recreational use. It absolutely was initially made as being a alternative for ethylphenidate https://andresarvya.tribunablog.com/how-4f-php-can-save-you-time-stress-and-money-44591409