1,2,4-苯三甲酸1,2,4-Benzenetricarboxylic acidTrimellitic acidBenzene-1,2,4-tricarboxylic acid偏苯三甲酸苯-1,2,4-三甲酸Benzene-1,2,4-tricarboxylic acid1,2,4-BENZENETRICARBOXYLIC ACID1,2,4-Benzenetricarboxylic acid1,2,4-Tricarboxybenzene4-Carboxyphthalic acidTMABenzene-1,2,4-tricarboxylic acid1,3,4-Benzenetricarboxylic acidtrimellitic acid1,4,5-Benzenetricarboxylic acid