Ethadione
{{short description|Chemical compound}}
{{distinguish|text=ethanedione or ethenedione}}
{{Drugbox
| Watchedfields = changed
| verifiedrevid = 443738776
| IUPAC_name = 3-Ethyl-5,5-dimethyl-1,3-oxazolidine-2,4-dione
| image = Ethadione.svg
| width = 130
| tradename =
| CAS_number_Ref = {{cascite|correct|??}}
| CAS_number = 520-77-4
| ATC_prefix = N03
| ATC_suffix = AC03
| PubChem = 10630
| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}
| ChemSpiderID = 10184
| UNII_Ref = {{fdacite|correct|FDA}}
| UNII = I0F8O700BB
| KEGG_Ref = {{keggcite|correct|kegg}}
| KEGG = C17724
| ChEMBL_Ref = {{ebicite|correct|EBI}}
| ChEMBL = 93047
| C=7 | H=11 | N=1 | O=3
| smiles = O=C1N(C(=O)OC1(C)C)CC
| StdInChI_Ref = {{stdinchicite|correct|chemspider}}
| StdInChI = 1S/C7H11NO3/c1-4-8-5(9)7(2,3)11-6(8)10/h4H2,1-3H3
| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}
| StdInChIKey = SIGSNYAYBSJATD-UHFFFAOYSA-N
}}
Ethadione is an anticonvulsant medication in the oxazolidinedione family used mainly to treat seizures.{{cite journal | vauthors = Bergstrand A, Bergstrand CG, Engstrom N, Herrlin KM | title = Renal histology during treatment with oxazolidine-diones (trimethadione, ethadione, and paramethadione) | journal = Pediatrics | volume = 30 | pages = 601–7 | date = October 1962 | issue = 4 | doi = 10.1542/peds.30.4.601 | pmid = 13970793 | s2cid = 7313535 }}