1-Oxaspiro(2.5)octane-2-carboxylic acid, 5,5,7-trimethyl-, ethyl ester 60234-72-2 EINECS 262-113-3 Ethyl 3,3-(2,2,4-trimethylpentamethylene)-2,3-epoxypropionate Ethyl 5,5,7-trimethyl-1-oxaspiro(2.5)octane-2-carboxylate