"Perfluorononan-1-oic acid — CAS Identifier: 375-95-1"@en . . "CAS:375-95-1" . . . "PFNA (Perfluoro Nonanoic Acid) — Codice CAS: 375-95-1"@it . . "PFNA (Perfluoro Nonanoic Acid)"@it . "Perfluorononan-1-oic acid"@en . .