5-Deshydroxy-5-formyl N,N’-Trityl Losartan Impurity B; 2-[1-[[2-Butyl-4-chloro-1-[[2'-[1-(triphenylmethyl)-1H-tetrazol-5-yl][1,1'-biphenyl]-4-yl]methyl]-1H-imidazol-5-yl]hydroxymethyl]butyl]-4-chloro-1-[[2'-[1-(triphenylmethyl)-1H-tetrazol-5-yl][1,1'-biphenyl]-4-yl]methyl]-1H-imidazole-5-carboxaldehyde;

Intermediate in the production of Losartan impurities