1-Chloro-2H-perfluoro(cyclopent-1-ene);1-CHLORO-3,3,4,4,5,5-HEXAFLUOROCYCLOPENTENE;Cyclopentene,1-chloro-3,3,4,4,5,5-hexafluoro-;2-chloro-3,3,4,4,5,5-hexafluorocyclopent-1-ene;1-Chloro-3,3,4,4,5,5-hexafluorocyclopent-1-ene;1-CHLORO-3,3,4,4,5,5-HEXAFLUOROCYCLOPENTENE, 97% MIN.