Des(oxopentyl) Valsartan Benzyl Ester N-[[2'-(1H-Tetrazol-5-yl)[1,1'-biphenyl]-4-yl]Methyl]-L-valine Benzyl Ester N-[[2'-(1H-Tetrazol-5-yl)[1,1'-biphenyl]-4-yl]Methyl]-L-valine PhenylMethyl Ester Desbutoxy Valsartan Benzyl Ester benzyl (2S)-3-methyl-2-[[4-[2-(2H-tetrazol-5-yl)phenyl]phenyl]methylamino]butanoate (S)-3-methyl-2-((2'-(1H-tetrazol-5-yl)-biphenyl-4-ylmethyl)-amino)-butyric acid benzyl ester Valsartan Desvaleryl Benzyl Impurity L-Valine, N-[[2'-(2H-tetrazol-5-yl)[1,1'-biphenyl]-4-yl]methyl]-, phenylmethyl ester