1-Penten-4-yn-3-ol, 3-methyl- 3-Methyl pent-4-en-l-yn-3-0L 3-Methyl-pent-4-en-1-yn-3-Ol 3-Methylpent-1-en-4-yn-3-ol 3230-69-1 4-01-00-02309 (Beilstein Handbook Reference) AI3-23711 BRN 1740552 EINECS 221-770-6 NSC 44005