2-Norbornanecarboxylic acid, 5,6-epoxy-, ethyl ester 3,4-Epoxy-2,5-endomethylenecyclohexanecarboxylic acid, ethyl ester 3-Oxatricyclo(3.2.1.0(2,4))octane-6-carboxylic acid, ethyl ester 3-Oxatricyclo(3.2.1.0(sup 2,4))octane-6-carboxylic acid, ethyl ester 97-81-4 AI3-26424 Ethyl 3-oxatricyclo-(3.2.1.0(sup 2,4))octane-6-carboxylate