Catsyn offer gram to tons of N1,N1'-(biphenyl-4,4'-diyl)bis(N1-phenyl-N4,N4-DI-m-tolylbenzene-1,4-diamine) | CAS 199121-98-7, its formula is C64H54N4, molecular weight is 879.14g/mol and the purity is usually NLT 98%.