Synonyms: 7-Oxabicyclo[2.2.1]heptane-2,3-dicarboxylicacid, 2-(butylthio)ethyl ester (7CI);7-Oxabicyclo[2.2.1]heptane-2,3-dicarboxylic acid, mono[2-(butylthio)ethyl]ester (8CI); Ethanol, 2-(butylthio)-, ester with7-oxabicyclo[2.2.1]heptane-2,3-dicarboxylic acid, endo-; NSC 202749