1,1'-Ferrocenedicarboxylic acid, dimethyl ester 1273-95-6 Cyclopentadienecarboxylic acid, iron deriv., dimethyl ester Dimethyl 1,1'-ferrocenedicarboxylate Ferrocene, 1,1'-bis(methoxycarbonyl)- Iron, bis(carboxycyclopentadienyl)-, dimethyl ester NSC156886