Synonyms: 1,1'-(1,4-Phthalazinediyldiimino)bis(3-chloro-4-(3,4-dimethoxyphenyl)-2-azetidinone);2-Azetidinone, 1,1'-(1,4-phthalazinediyldiimino)bis(3-chloro-4-(3,4-dimethoxyphenyl)-;AC1O4Q1G;LS-23166;139108-69-3;3-chloro-1-[[4-[[3-chloro-2-(3,4-dimethoxyphenyl)-4-oxoazetidin-1-yl]amino]phthalazin-1-yl]amino]-4-(3,4-dimethoxyphenyl)azetidin-2-one