2,2,3,3,4,4,5,5,5-Nonafluoro-pentanoic acid 2706-90-3 InChI=1/C5HF9O2/c6-2(7,1(15)16)3(8,9)4(10,11)5(12,13)14/h(H,15,16 Nonafluoro-valeric acid Perfluoropentanoic acid Perfluorovaleric acid nonafluoropentanoic acid pentanoic acid, nonafluoro-