Catsyn offer gram to tons of [1,1':3',1''-Terphenyl]-3,3'',5,5''-tetracarboxylic acid, 5'-(4-carboxyphenyl)- | CAS 1250980-06-3, its formula is C29H18O10, molecular weight is 526.45g/mol and the purity is usually NLT 98%.