Formoterol EP Impurity C Catalogue F640573 CAS 1795135-61-3 M.W Molecular Weight: M.F C20H26N2O4 Specifications FAQs Synonyms:N-(2-Hydroxy-5-(1-hydroxy-2-((1-(4-methoxyphenyl)propan-2-yl)amino)ethyl)phenyl)acetamide