1-HEXYN-3-OL 1-Hexyne-3-ol 1-Propylpropargyl alcohol 105-31-7 15352-98-4 3-Hydroxy-1-hexyne 4-01-00-02234 (Beilstein Handbook Reference) AI3-25134 BRN 1739419 EINECS 203-286-7 NSC 244896 Propylethinylcarbinol