1,5-Pentanedithiol928-98-333 % similar Perfluorohexyloctane133331-77-832 % similar 3,3,4,4,5,6,6,6-Octafluoro-5-(trifluoromethyl)hexan-1-ol89076-11-931 % similar 1,1,1,2,2,3,3-Heptafluoro-5-iodopentane1513-88-830 % similar