(1,1'-Biphenyl)-4,4'-dicarboxylic acid, 2,2'-dinitro-, diethyl ester 4,4'-Biphenyldicarboxylic acid, 2,2'-dinitro-, diethyl ester DV3885250 Diethyl 2,2'-dinitro-(1,1'-biphenyl)-4,4'-dicarboxylate