2,2,3,3,4,4,5,5,6,6-Decafluoro-1-(pentafluoroethyl)piperidine 564-11-4 EINECS 209-268-5 Perfluoro-N-ethylpiperidine Piperidine, 2,2,3,3,4,4,5,5,6,6-decafluoro-1-(pentafluoroethyl)-