2F-dck 2fdck 2-fdck CAS 111982-50-4 2-F2F-dck 2fdck 2-fdck CAS 111982-50-4 2-F2F-dck 2fdck 2-fdck CAS 111982-50-4 2-F2F-dck 2fdck 2-fdck CAS 111982-50-4 2-F2F-dck 2fdck2-FDCK CAS 111982-50-4 2-F2F-DCK 2FDCK 2-FDCK CAS CAS 111982-50-4 2-F