Catsyn offer gram to tons of 1,1':2',1''-Terphenyl, 4,4''-diethynyl-3',4',5',6'-tetrakis(4-ethynylphenyl)- | CAS 252238-71-4, its formula is C54H30, molecular weight is 678.82g/mol and the purity is usually NLT 98%.