α,α'-Dibrom-4,4'-dinitro-bibenzyl-2,2'-disulfonsaeure-dimethylester;Dimethylester aus 4.4'-Dinitro-stilbendibromid-disulfonsaeure-(2.2');Dimethylester aus α.α'-Dibrom-4.4'-dinitro-dibenzyl-disulfonsaeure-(2.2');Methyl 2-[1,2-dibromo-2-(2-methoxysulfonyl-4-nitrophenyl)ethyl]-5-nitrobenzenesulfonate