140.1432 in α-PHP) also suggested the hydroxylation transpired both in the pyrrolidinyl ring or maybe the alkyl chain with the molecule. The exact place on the hydroxylation couldn't be established. 4F-MPH has a particularly brief record of leisure use. It was originally made as being a alternative for ethylphenidate which https://4f-php-effects34566.blogripley.com/30826199/a-review-of-4f-php-effects