(+)-1,2,2-Trimethyl-1,3-cyclopentanedicarboxylic anhydride (-)-Camphoric anhydride (1S)-1,8,8-Trimethyl-3-oxabicyclo(3.2.1)octane-2,4-dione 1,3-Cyclopentanedicarboxylic anhydride, 1,2,2-trimethyl-, (+)- 3-Oxabicyclo(3.2.1)octane-2,4-dione, 1,8,8-trimethyl-, (1S)- 595-31-3 EINECS 209-862-4 L-Camphoric anhydride d-Camphoric anhydride