Valsartan Impurity 29 Catalogue S130529 CAS 1266616-11-8 M.W 307.40 M.F C18H21N5 Specifications FAQs Synonyms:N-((2'-(1H-Tetrazol-5-yl)-[1,1'-biphenyl]-4-yl)methyl)-2-methylpropan-1-amine