bis(2-hydroxy ethyl terephthaloyl) ethylene

1,4-bis(trifluoromethyl)-2,5-dibromobenzene

4-(4-hydroxybenzoyl)benzoic acid methyl ester

1,1'-(1,4-phenylenedicarbonyl)bis-(1H-1,2,3-benzotriazole)

terephthaloyl bromide