Photoresist Chemicals (2S,2’S)-(-)-[N,N’-Bis(2-pyridylmethyl]-2,2′-bipyrrolidinebis(acetonitrile) iron(II) hexafluoroantimonate Fe(S,S-PDP) White-Chen Catalyst Cas:959395-10-9 Molecular Formula:(2S,2’S)-(-)-[N,N’-Bis(2-pyridylmethyl]-2,2′-bipyrrolidinebis(acetonitrile) iron(II) hexafluoroantimonate Fe(S,S-PDP) White-Chen Catalyst