Catsyn offer gram to tons of 4,4',4'',4'''-([1,1'-Biphenyl]-3,3',5,5'-tetrayltetrakis(ethyne-2,1-diyl))tetrabenzoic acid | CAS 1569900-74-8, its formula is C48H26O8, molecular weight is 730.72g/mol and the purity is usually NLT 98%.