1,4-Methano-1H-cyclopenta(c)furan-3(3aH)-one, tetrahydro-3a-methyl- (9CI) 1,4-Methano-1H-cyclopenta(c)furan-3(3ah)-one, tetrahydro-2-methyl-, exo- 2-exo-Hydroxy-7-methyl-7-norbornanecarboxylic acid 7-lactone 30244-06-5 7-Norboranecarboxylic acid, 2-hydroxy-7-methyl-, 7-lactone, exo NSC 92374