SYNONYMS Avapro;2-Butyl-3-[[ 29-( 1H-tetrazol-5-yl) [1, 19-biphenyl]-4-yl] methyl]1,3- diazaspiro[4,4] non-1-en-4-one; 2-Butyl-3-(p-(o-1H-tetrazol-5-ylphenyl)benzyl)-1,3-diazaspiro(4.4)non-1-en-4-one; cas no:138402-11-6