1,4-Benzenedicarboxylic acid 100-21-0 Acide terephtalique Benzene-p-dicarboxylic acid Kyselina terftalova NSC36973 TPA Terephthalic acid WLN: QVR DVQ WR 16262 p-Benzenedicarboxylic acid p-Dicarboxybenzene p-Phthalic acid