Thiouracil

Thiouracil
IUPAC name 2-thioxo-1H-pyrimidin-4-one
Identifiers
CAS number	141-90-2 Y
PubChem	1269845
ChemSpider	1066108 Y
UNII	59X161SCYL Y
KEGG	C19304 N
MeSH	Thiouracil
ChEBI	CHEBI:348530 Y
ChEMBL	CHEMBL345768 Y
Jmol-3D images	Image 1
SMILES O=C1\C=C/NC(=S)N1
InChI InChI=1S/C4H4N2OS/c7-3-1-2-5-4(8)6-3/h1-2H,(H2,5,6,7,8) Y Key: ZEMGGZBWXRYJHK-UHFFFAOYSA-N Y InChI=1/C4H4N2OS/c7-3-1-2-5-4(8)6-3/h1-2H,(H2,5,6,7,8) Key: ZEMGGZBWXRYJHK-UHFFFAOYAK
Properties
Molecular formula	C4H4N2OS
Molar mass	128.153
N (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Thiouracil refers both to a specific molecule consisting of a sulfated uracil, and a family of molecules based upon that structure. The substance is a historically relevant antithyroid preparation. Astwood E.B. used it in 1943 as therapy of Graves' disease for the first time. It remains in use.