2,5-Norbornadiene-2-carboxylic acid, 3-formyl-, methylester AIDS-131929 AIDS131929 Methyl 3-formylbicyclo[2.2.1]hepta-2,5-diene-2-carboxylate NSC624975 {Bicyclo[2,2,1]hepta-2,5-diene-2-carboxylic} acid, 3-formyl-,methyl ester