95%

8-methylnon-8-enoic anhydride
Chemical Formula: C20H34O3
Molecular Weight: 322.4890
m/z: 322.2508 (100.0%), 323.2541 (21.6%), 324.2575 (2.2%)
Elemental Analysis: C, 74.49; H, 10.63; O, 14.88