Desloratadine EP Impurity C Catalogue D225633 CAS 298220-99-2 M.W 382.88 M.F C22H23ClN2O2 Specifications FAQs Synonyms: ethyl 4-(8-chloro-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11(6H)-ylidene)piperidine-1-carboxylate