4′-benzophenone tetracarboxylic dianhydride 2421-28-5

English name: 3,3,4,4-Benzophenonetetracarboxylic Acid Dianhydride Common aliases: 4,4′-carbonyl diphthalic anhydride; 3,3′,4,4′-benzophenone tetracarboxylic dianhydride; 3,3′,…