trans-2,3-Butylene carbonate

*trans*-2,3-Butylene carbonate
Names
	IUPAC name trans-4,5-Dimethyl-[1,3]dioxolan-2-one
Identifiers
CAS Number	65941-76-6 ; 51260-48-1 (R,R) ; 51261-82-6 (S,S) ;
3D model (JSmol)	Interactive image; Interactive image;
ChemSpider	8255915 ;
PubChem CID	10080377;
UNII	V4U69J5MK2 ;
CompTox Dashboard (EPA)	DTXSID10435208 ;
	InChI InChI=1S/C5H8O3/c1-3-4(2)8-5(6)7-3/h3-4H,1-2H3/t3-,4-/m0/s1 Key: LWLOKSXSAUHTJO-IMJSIDKUSA-N ; InChI=1/C5H8O3/c1-3-4(2)8-5(6)7-3/h3-4H,1-2H3/t3-,4-/m0/s1 Key: LWLOKSXSAUHTJO-IMJSIDKUBM;
	SMILES O=C1O[C@@H](C)[C@@H](O1)C; O=C1O[C@@H](C)[C@H](C)O1;
Properties
Chemical formula	C5H8O3
Molar mass	116.116 g·mol−1
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

trans-2,3-Butylene carbonate is an organic compound with formula C
₅H
₈O
₃, or (H₃C)₂(C₂H₂)(CO₃). It is an ester with a carbonate functional group bonded to both free ends of the trans-2,3-butylene group. It is also a heterocyclic compound with a five-membered ring containing two oxygen atoms, and can be viewed as a derivative of dioxolane, namely trans-4,5-dimethyl-1,3-dioxolan-2-one.

The compound is an aprotic polar solvent and has been proposed as an ingredient of the electrolyte of lithium batteries.