140.1432 in α-PHP) also prompt the hydroxylation happened both with the pyrrolidinyl ring or the alkyl chain with the molecule. The exact position with the hydroxylation could not be decided. 4F-MPH has an especially shorter historical past of recreational use. It had been at first designed to be a replacement https://rafaeldfhls.blog5star.com/30647557/the-greatest-guide-to-4f-php