3-Bromo-3-(bromomethyl)-1,5-dimethyl-4-oxo-6-oxabicyclo(3.1.0)hexane-2-carboxylic acid 5-18-08-00087 (Beilstein Handbook Reference) 52775-80-1 6-Oxabicyclo(3.1.0)hexane-2-carboxylic acid, 3-bromo-3-(bromomethyl)-1,5-dimethyl-4-oxo- BRN 1379773