1-Methyl-7-oxabicyclo(2.2.1)heptane-2,3-dicarboxylic acid (exo,exo)- 4-18-00-04468 (Beilstein Handbook Reference) 54384-23-5 7-Oxabicyclo(2.2.1)heptane-2,3-dicarboxylic acid, 1-methyl-, (exo,exo)- BRN 0084922