2(3H)-FURANONE, DIHYDRO-5-(2-PROPYNYLOXYMETHYL)- 27850-25-5 BRN 1636770 Dihydro-5-(2-propynyloxymethyl)-2(3H)-furanone Propargyloxymethyl-4 gamma-butyrolactone gamma-Butyrolactone, 4-(2-propynyloxymethyl)-