1,2-Dimethyl-4-phenyl-4-(propionyloxy)piperidine 4-Piperidinol, 1,2-dimethyl-4-phenyl-, propanoate (ester), trans-(+-)- 79973-90-3 Dmppop beta-1,2-Dimethyl-4-phenyl-4-(propionyloxy)piperidine