102-54-5 51364-12-6 55404-68-7 AI3-23119 Biscyclopentadienyliron CCRIS 3195 Catane Di(pi-cyclopentadienyl)iron Di-2,4-cyclopentadien-1-yliron Dicyclopentadienyl iron EINECS 203-039-3 FERROCENE Ferrotsen HSDB 2878 Iron bis(cyclopentadiene) Iron bis(cyclopentadienide) Iron dicyclopentadienyl Iron, bis(eta5-2,4-cyclopentadien-1-yl)- NSC 2033