Valsartan EP Impurity B(rac-Valsartan EP Impurity B) Catalogue S130502 CAS 1894176-44-3 M.W 525.66 M.F C31H35N5O3 Specifications FAQs Synonyms:benzyl N-((2'-(1H-tetrazol-5-yl)-[1,1'-biphenyl]-4-yl)methyl)-N-pentanoylvalinate