Levocabastine & Levocabastine Hydrochloride (3S,4R)-1-[cis-4-Cyano-4-(4-fluorophenyl)cyclohexyl]-3-methyl-4-phenyl-4-piperidinecarboxylic acid (3S,4R)-1-(4-Cyano-4-(4-fluorophenyl)cyclohexyl)-3-Methyl-4-phenylpiperidine-4-carboxylic acid LEVOCABASTINE (3S,4R)-3-methyl-4-phenyl-1-[(1s,4s)-4-cyano-4-(4-fluorophenyl)cyclohexyl]piperidine-4-carboxylic acid 4-Piperidinecarboxylic acid, 1-[4-cyano-4-(4-fluorophenyl)cyclohexyl]-3-methyl-4-phenyl-, [3S-[1(cis),3a,4b]]- 4-Piperidinecarboxylic acid, 1-[cis-4-cyano-4-(4-fluorophenyl)cyclohexyl]-3-methyl-4-phenyl-, (3S,4R)- (9CI) (3S)-1-[4α-Cyano-4-(4-fluorophenyl)cyclohexan-1α-yl]-3β-methyl-4-phenylpiperidine-4α-carboxylic acid