"Henicosafluoroundecanoic acid — CAS Identifier: 2058-94-8"@en . "Henicosafluoroundecanoic acid"@en . . . . "PFUdA (Perfluoro Undecanoic Acid) — Codice CAS: 2058-94-8"@it . "CAS:2058-94-8" . "PFUdA (Perfluoro Undecanoic Acid)"@it . . .