RGPU-ninety five relies over the phenylpiracetam molecular skeleton with a further chlorine connected to the phenyl team. Due to the chiral Centre in the fourth position from the pyrrolidinone ring, it might exist in an S or R-isomer; the clinically applied variety will be the racemic combination.[one]RGPU-95 (also known as p-Cl-Phenylpiracetam) is