1,1-Bis(p-acetylaminophenyl)-2,2-dichloroethane 56138-92-2 Acetamide, N,N'-((2,2-dichloroethylidene)di-4,1-phenylene)bis- BRN 2772082 N,N'-((2,2-Dichloroethylidene)di-4,1-phenylene)bisacetamide