Desloratadine Impurity 8 Catalogue D225641 CAS 119410-04-7 M.W 324.81 M.F C19H17ClN2O Specifications FAQs 8-chloro-11-(piperidin-4-ylidene)-5,11-dihydro-6H-benzo[5,6]cyclohepta[1,2-b]pyridin-6-one
