CAS No 3973-18-0 , Propynol ethoxylate2-(Prop-2-ynyloxy)ethanolPropynol ethoxylate2-(Prop-2-ynyloxy)ethanol PME 4-Oxa-1-hexyn-6-olPropynol ethoxylate2-(Prop-2-ynyloxy)ethanolPropynol ethoxylate2-(Prop-2-ynyloxy)ethanol PME 4-Oxa-1-hexyn-6-ol Ethylene glycol monopropargyl ether