United States Pharmacopeia (USP) Reference Standard Synonym(s): 4-(8-Chloro-5,6-dihydro-11H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-ylidene-1-piperidinecarboxylic acid ethyl ester; Loratidine Empirical Formula: C22H23N2O2Cl Formula Weight: 382.88 Linear...