3-FURANACETIC ACID, TETRAHYDRO-2-OXO-5-(2-PROPYNYLOXYMETHYL)-, ETHYL ESTER 69352-39-2 Ethyl 2-oxo-5-(2-propynyloxymethyl)tetrahydro-3-furanacetate Propargyloxymethyl-4 carboethoxymethyl-2 acetyl-2 gamma-butyrolactone gamma-Butyrolactone, 2-acetyl-2-ethoxycarbonylmethyl-4-propargyloxymethyl-