141478-93-5 Undecanoic acid, 7,7,8,8,9,9,10,10,11,11,11-undecafluoro-6-oxo-,methyl ester 141478-95-7 Dodecanoic acid,7,7,8,8,9,9,10,10,11,11,12,12,12-tridecafluoro-6-oxo-, methyl ester 141478-97-9 Tridecanoic acid,7,7,8,8,9,9,10,10,11,11,12,12,13,13,13-pentadecafluoro-6-oxo-, ethylester