"CAS:307-24-4" . "Undecafluorohexanoic acid — CAS Identifier: 307-24-4"@en . . "PFHxA (Perfluoro Hexanoic Acid) — Codice CAS: 307-24-4"@it . . . . "Undecafluorohexanoic acid"@en . . "PFHxA (Perfluoro Hexanoic Acid)"@it .