Biperiden
Biperiden is a member of the class of piperidines that is N-propylpiperidine in which the methyl hydrogens have been replaced by hydroxy, phenyl, and 5-norbornen-2-yl groups. A muscarinic antagonist affecting both the central and peripheral nervous systems, it is used in the treatment of all forms of Parkinson's disease. It has a role as a muscarinic antagonist, a parasympatholytic, an antiparkinson drug, an antidyskinesia agent and an antidote to sarin poisoning. It is a member of piperidines, a tertiary amino compound and a tertiary alcohol.