Phenindione

Clinical data
AHFS/Drugs.com	International Drug Names
Pregnancy category	AU: D Passes into breast milk
Routes of administration	Oral
ATC code	B01AA02 (WHO)
Pharmacokinetic data
Protein binding	88%
Elimination half-life	5 to 10 hours
Identifiers
IUPAC name 2-phenyl-1H-indene-1,3(2H)-dione
CAS Number	83-12-5 Y
PubChem CID	4760
IUPHAR/BPS	6838
DrugBank	DB00498 Y
ChemSpider	4596 Y
UNII	5M7Y6274ZE
KEGG	D08354 Y
ChEBI	CHEBI:8066 Y
ChEMBL	ChEMBL711 Y
CompTox Dashboard (EPA)	DTXSID5023453
ECHA InfoCard	100.001.323
Chemical and physical data
Formula	C15H10O2
Molar mass	222.243 g·mol−1
3D model (JSmol)	Interactive image
SMILES O=C2c1ccccc1C(=O)C2c3ccccc3
InChI InChI=1S/C15H10O2/c16-14-11-8-4-5-9-12(11)15(17)13(14)10-6-2-1-3-7-10/h1-9,13H Y Key:NFBAXHOPROOJAW-UHFFFAOYSA-N Y
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Phenindione is an anticoagulant which functions as a Vitamin K antagonist.

Phenindione was introduced in the early 1950s. It acts similar to warfarin, but it has been associated with hypersensitivity reactions, so it is rarely used and warfarin is preferred.^[1][2]