2(3H)-Furanone, 3-bromodihydro- 2-Bromo-4-butanolide 2-Bromobutyrolactone 3-Bromo-2-furanone 5061-21-2 86362-17-6 EINECS 225-764-4 NSC 11726 NSC 56959 alpha-Bromo-gamma-butyrolactone alpha-Bromobutyric acid, gamma-lactone