The molecule is a monoterpenoid with an epoxy-bridged bicyclic dicarboxylic acid structure, which acts as an inhibitor of protein phosphatases 1 and 2A. It has a role as an EC 3.1.3.16 (phosphoprotein phosphatase) inhibitor, a hepatotoxic agent and an apoptosis inducer. It is a monoterpenoid, a dicarboxylic acid, a bridged compound and an oxabicycloalkane. It derives from a cantharidin.
(1R,2S,3R,4S)-2,3-dimethyl-7-oxabicyclo[2.2.1]heptane-2,3-dicarboxylic acid