(3-alpha,4-alpha,6-beta)-1,3-Dimethyl-4-ethynyl-6-(4-fluorophenyl)-3,4-piperidinediol 121368-78-3 3,4-Piperidinediol, 1,3-dimethyl-4-ethynyl-6-(4-fluorophenyl)-, (3-alpha,4-alpha,6-beta)- 3,4-Piperidinediol, 4-ethynyl-6-(4-fluorophenyl)-1,3-dimethyl-, (3alpha,4alpha,6beta)- 3a,4a-Dihydroxy-1e,3e-dimethyl-6e-(4-fluorophenyl)-4e-ethynylpiperidine