Synonyms: 1-Piperidinebutanoic acid, 4-[(4-chlorophenyl)-2-pyridinylmethoxy]-, (S)-, monobenzenesulfonate; 1-Piperidinebutanoic acid, 4-[(S)-(4-chlorophenyl)-2-pyridinylmethoxy]-, monobenzenesulfonate; 4-[4-[(R)-(4-chlorophenyl)-pyridin-2-yl-methoxy]-1-piperidyl]butanoic acid; Bepotastine besylate; 4-{4-[(S)-(4-chlorophenyl)(pyridin-2-yl)methoxy]piperidin-1-yl}butanoic acid benzenesulfonate (1:1); 4-{4-[(R)-(4-chlorophenyl)(pyridin-2-yl)methoxy]piperidin-1-yl}butanoic acid benzenesulfonate (1:1); 1-Piperidinebutanoic acid, 4-[(4-chlorophenyl)-2-pyridinylmethoxy]-, (R)-, monobenzenesulfonate