英文别名TRIPHENYLMETHYL IRBESARTAN; 2-butyl-3-[[4-[2-(2-trityl-tetrazol-5-yl)phenyl]phenyl]methyl]-1,3-diazaspiro[4.4]non-1-en-4-one; Trityl Irbestartan; TRIPHENYL IRBESARTAN; N-TriphenylMethyl Irbesartan; Irbesartan N1-Trityl Impurity; 2-butyl-3-[[4-[2-(2-trityltetrazol-5-yl)phenyl]phenyl]methyl]-1,3-diazaspiro[4.4]non-1-en-4-one; Irbesartan intermediate: 2-n-Butyl-4-spirocyclopentane-1-[(2'-(triphenylmethyltetrazole-5-yl)biphenyl-4-yl)methyl]-2-imidazolin-5-one; 2-Butyl-3-{[2'-(1-trityl-1H-tetrazol-5-yl)-4-biphenylyl]methyl}-1,3-diazaspiro[4.4]non-1-en-4-one; 2-Butyl-3-{[2'-(2-trityl-2H-tetrazol-5-yl)-4-biphenylyl]methyl}-1,3-diazaspiro[4.4]non-1-en-4-one 
