2(3H)-FURANONE, DIHYDRO-3-ACETYL-5-(2-PROPYNYLOXYMETHYL)- 28330-20-3 5-18-02-00493 (Beilstein Handbook Reference) BRN 1242296 Propargyloxymethyl-4 acetyl-2 gamma-butyrolactone gamma-Butyrolactone, 2-acetyl-4-propargyloxymethyl-