1-(2,3-Dihydro-1-(2'-methylphenacyl)-2-oxo-5-phenyl-1H-1,4-benzodiazepin-3-yl)-3-(3-methylphenyl)urea 145084-28-2 Urea, N-(2,3-dihydro-1-(2-(2-methylphenyl)-2-oxoethyl)-2-oxo-5-phenyl-1H-1,4-benzodiazepin-3-yl)-N'-(3-methylphenyl)-, (R)- YM 022 YM-022