4-乙基-1,3-二恶烷-2-酮

1,2-Butylene carbonate is an organic compound with formula C 5H 8O 3, or (H5C2)(C2H3)(CO3). It is a double ester with the carbonate functional group bonded to both free ends of the 1,2-butylene group. It is also an heterocyclic compound with a five-membered ring, and can be seen as a derivative of dioxolane, specifically 4-ethyl-1,3-dioxolan-2-one.