Ynol

In chemistry, an ynol (or alkynol) is an alkyne with a hydroxyl group affixed to one of the two carbons composing the triple bond. The deprotonated anions of ynols are known as ynolates. An ynol with hydroxyl groups on both sides of its triple bond is known as an ynediol; only one ynediol, acetylenediol, exists.