. "1,7-Dioxaspiro-[5.5]-undecane"@en . "1,7-Dioxaspiro-[5.5]-undecane — CAS Identifier: 180-84-7"@en . "CAS:180-84-7" . . . "1,7-DIOSSASPIRO[5.5]UNDECANO — Codice CAS: 180-84-7"@it . . "1,7-DIOSSASPIRO[5.5]UNDECANO"@it . .