1-Butyn-4-ol 2-Hydroxyethylacetylene 3-BUTYN-1-OL 3-Butyne-1-ol 3-Butynol 3-Butynyl alcohol 4-01-00-02219 (Beilstein Handbook Reference) 4-Hydroxy-1-butyne 927-74-2 AI3-25453 BRN 0773710 But-3-yn-1-ol EINECS 213-161-9 NSC 9708