Are there alternatives to 4,4'-Dibromo-2-nitro-1,1'-biphenyl in synthesis?

There are several alternatives to 4,4'-Dibromo-2-nitro-1,1'-biphenyl in synthesis, including 2,2'-Dibromo-4,4'-dinitrobenzophenone and 1,1'-Bis(4-nitro-2-bromophenyl)ethane. These alternatives offer similar functionality in certain applications but may have different chemical properties and reactivity profiles. The choice of alternative often depends on the specific requirements of the reaction and the desired product.