2,5-Dimethyl-4-phenyl-4-propionyloxy-1-pyrrolidinylpropylpiperidine 54521-98-1 BRN 1501101 Piperidine, 2,5-dimethyl-4-phenyl-4-propionyloxy-1-pyrrolidinylpropyl- Propionic acid, (2,5-dimethyl-4-phenyl-1-(pyrrolidinylpropyl)-4-piperidinyl) ester