2(3H)-Furanone, 5-ethyldihydro- 4-Ethyl-4-butanolide 4-Ethyl-4-hydroxybutanoic acid lactone 4-Hexanolide 4-Hydroxyhexanoic acid lactone 5-17-09-00040 (Beilstein Handbook Reference) 5-ETHYLDIHYDRO-2(3H)-FURANONE 5-Ethyltetrahydro-2-furanone 57129-70-1 6-Caprolactone 695-06-7 AI3-36655 BRN 0107260 EINECS 211-778-8 FEMA No. 2556 Hexan-4-olide Hexanoic acid, 4-hydroxy-, gamma-lactone Hexanolide-1,4 NSC 134769 NSC 24255 Tonkalide Toukalide gamma-Caprolactone gamma-Ethyl-n-butyrolactone gamma-Ethylbutyrolactone gamma-Hexalactone gamma-Hexanolactone