919005-30-4 5,8,10,12,14-Pentaoxapentadecanoic acid,2,2,3,4,4,6,6,7,7,9,9,11,11,13,13,15,15,15-octadecafluoro- 919005-43-9 Propanoic acid,3-[1,1,2,2-tetrafluoro-2-(1,1,2,2,3,3,3-heptafluoropropoxy)ethoxy]- 919005-53-1 Hexanoic acid,2,2,3,3,4,4,5,5,6,6-decafluoro-6-(1,2,2,2-tetrafluoroethoxy)-