Propylphenidate
Summary Propylphenidate, sometimes called PPH, belongs to the class of piperidine-based stimulant drugs. It shares a close structural relationship with methylphenidate, differing primarily in replacing the methyl ester with a propyl ester. Notably, in April 2015, the United Kingdom classified Propylphenidate as a Temporary Class Drug due to its unauthorized distribution and sale as a …