Thiobarbital

Thiobarbital is a drug which is a barbiturate derivative. It is the thiobarbiturate analogue of barbital.

Thiobarbital

Identifiers
IUPAC name 5,5-diethyl-2-thioxodihydropyrimidine-4,6(1H,5H)-dione
CAS Number	77-32-7 N
PubChem CID	667509
ChemSpider	580885 Y
UNII	H4FNF051KS
CompTox Dashboard (EPA)	DTXSID40227810
ECHA InfoCard	100.000.929
Chemical and physical data
Formula	C8H12N2O2S
Molar mass	200.26 g·mol−1
3D model (JSmol)	Interactive image
SMILES O=C1NC(=S)NC(=O)C1(CC)CC
InChI InChI=1S/C8H12N2O2S/c1-3-8(4-2)5(11)9-7(13)10-6(8)12/h3-4H2,1-2H3,(H2,9,10,11,12,13) Y Key:QGVNJRROSLYGKF-UHFFFAOYSA-N Y
NY (what is this?)  (verify)

Synthesis

Thiobarbital synthesis:^[1][2]

It is of note that although the drug can be prepared by the above route (cf e.g. thialbarbital), reaction of barbital with phosphorus pentasulfide constitutes an alternative route to thiobarbital.