bis(2-hydroxy ethyl terephthaloyl) ethylene

4-苯甲酰基苯甲酮

4-苯甲酰基-苯甲酸甲酯

2-羟基对苯二甲酸二甲酯

2,5-Dihydroxybenzol-1,4-dicarbonsaeure-dimethylester