WARFARIN

First approved in 1954

Details

Stereochemistry	RACEMIC
Molecular Formula	C19H16O4
Molecular Weight	308.3279
Optical Activity	( + / - )
Defined Stereocenters	0 / 1
E/Z Centers	0
Charge	0

SHOW SMILES / InChI

Structure Search

SMILES

CC(=O)CC(C1=CC=CC=C1)C2=C(O)C3=C(OC2=O)C=CC=C3

InChI

InChIKey=PJVWKTKQMONHTI-UHFFFAOYSA-N

InChI=1S/C19H16O4/c1-12(20)11-15(13-7-3-2-4-8-13)17-18(21)14-9-5-6-10-16(14)23-19(17)22/h2-10,15,21H,11H2,1H3

HIDE SMILES / InChI

Molecular Formula	C19H16O4
Molecular Weight	308.3279
Charge	0
Count

Stereochemistry	RACEMIC
Additional Stereochemistry	No
Defined Stereocenters	0 / 1
E/Z Centers	0
Optical Activity	( + / - )

Description
Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2010/009218s108lbl.pdf | https://www.drugbank.ca/drugs/DB00682 | https://www.ncbi.nlm.nih.gov/pubmed/23618698

Warfarin is an anticoagulant drug normally used to prevent blood clot formation as well as migration. Warfarin is marketed under the brand name Coumadin among others. Coumadin (crystalline warfarin sodium) is an anticoagulant which acts by inhibiting vitamin K-dependent coagulation factors. Chemically, it is 3-(α-acetonylbenzyl)-4-hydroxycoumarin and is a racemic mixture of the R- and S-enantiomers. Coumadin is indicated for the prophylaxis and/or treatment of venous thrombosis and its extension, and pulmonary embolism. It is also indicated for the prophylaxis and/or treatment of the thromboembolic complications associated with atrial fibrillation and/or cardiac valve replacement. Warfarin is thought to interfere with clotting factor synthesis by inhibition of the C1 subunit of the vitamin K epoxide reductase (VKORC1) enzyme complex, thereby reducing the regeneration of vitamin K1 epoxide. The degree of depression is dependent upon the dosage administered and, in part, by the patient’s VKORC1 genotype. Therapeutic doses of warfarin decrease the total amount of the active form of each vitamin K dependent clotting factor made by the liver by approximately 30% to 50%.

CNS Activity

Originator

Approval Year

Targets

Primary Target	Pharmacology	Condition	Potency
Vitamin k epoxide reductase complex subunit 1 isoform 1 22 Target ID: CHEMBL1930 Sources: https://www.ncbi.nlm.nih.gov/pubmed/6712738 \| https://www.accessdata.fda.gov/drugsatfda_docs/label/2010/009218s108lbl.pdf \| https://www.ncbi.nlm.nih.gov/pubmed/23618698	Inhibitor 8504		24.7 nM [IC50]

Conditions

Condition	Modality	Highest Phase	Product
Venous thrombosis 9 Sources: https://www.drugs.com/dosage/warfarin.html	Primary	Approved 8583	COUMADIN Approved Use Warfarin sodium tablets are indicated for the prophylaxis and/or treatment of venous thrombosis and its extension, and pulmonary embolism. Warfarin sodium tablets are indicated for the prophylaxis and/or treatment of the thromboembolic complications associated with atrial fibrillation and/or cardiac valve replacement. Warfarin sodium tablets are indicated to reduce the risk of death, recurrent myocardial infarction, and thromboembolic events such as stroke or systemic embolization after myocardial infarction. Launch Date 1954
Myocardial infarction 125 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2010/009218s108lbl.pdf https://www.drugs.com/pro/warfarin.html	Preventing	Approved 8583	COUMADIN Approved Use Warfarin sodium tablets are indicated for the prophylaxis and/or treatment of venous thrombosis and its extension, and pulmonary embolism. Warfarin sodium tablets are indicated for the prophylaxis and/or treatment of the thromboembolic complications associated with atrial fibrillation and/or cardiac valve replacement. Warfarin sodium tablets are indicated to reduce the risk of death, recurrent myocardial infarction, and thromboembolic events such as stroke or systemic embolization after myocardial infarction. Launch Date 1954
Thromboembolic complications associated with atrial fibrillation 7 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2010/009218s108lbl.pdf	Preventing	Approved 8583	COUMADIN Approved Use Warfarin sodium tablets are indicated for the prophylaxis and/or treatment of venous thrombosis and its extension, and pulmonary embolism. Warfarin sodium tablets are indicated for the prophylaxis and/or treatment of the thromboembolic complications associated with atrial fibrillation and/or cardiac valve replacement. Warfarin sodium tablets are indicated to reduce the risk of death, recurrent myocardial infarction, and thromboembolic events such as stroke or systemic embolization after myocardial infarction. Launch Date 1954

C_max

Value	Dose	Co-administered	Analyte	Population
2186 ng/mL EXPERIMENT https://www.ncbi.nlm.nih.gov/pubmed/19552747	25 mg single, oral dose: 25 mg route of administration: Oral experiment type: SINGLE co-administered:		WARFARIN plasma	Homo sapiens population: HEALTHY age: ADULT sex: FEMALE / MALE food status: FASTED

AUC

Value	Dose	Co-administered	Analyte	Population
52278 ng × h/mL EXPERIMENT https://www.ncbi.nlm.nih.gov/pubmed/19552747	25 mg single, oral dose: 25 mg route of administration: Oral experiment type: SINGLE co-administered:		WARFARIN plasma	Homo sapiens population: HEALTHY age: ADULT sex: FEMALE / MALE food status: FASTED

T_1/2

Value	Dose	Co-administered	Analyte	Population
7 day DRUG LABEL https://www.accessdata.fda.gov/drugsatfda_docs/label/2011/009218s107lbl.pdf	single, oral		WARFARIN plasma	Homo sapiens population: UNHEALTHY age: UNKNOWN sex: UNKNOWN food status: UNKNOWN
32.4 h EXPERIMENT https://www.ncbi.nlm.nih.gov/pubmed/19552747	25 mg single, oral dose: 25 mg route of administration: Oral experiment type: SINGLE co-administered:		WARFARIN plasma	Homo sapiens population: HEALTHY age: ADULT sex: FEMALE / MALE food status: FASTED

F_unbound

Value	Dose	Co-administered	Analyte	Population
1% DRUG LABEL https://www.accessdata.fda.gov/drugsatfda_docs/label/2011/009218s107lbl.pdf	single, oral		WARFARIN plasma	Homo sapiens population: UNHEALTHY age: UNKNOWN sex: UNKNOWN food status: UNKNOWN

Doses

Dose	Population	Adverse events
125 mg single, oral Overdose Dose: 125 mg Route: oral Route: single Dose: 125 mg Sources: https://pubmed.ncbi.nlm.nih.gov/14639058	unhealthy, 43 Health Status: unhealthy Age Group: 43 Sex: M Sources: https://pubmed.ncbi.nlm.nih.gov/14639058	Disc. AE: Vomiting, Loss of consciousness... AEs leading to discontinuation/dose reduction: Vomiting Loss of consciousness Sources: https://pubmed.ncbi.nlm.nih.gov/14639058
150 mg single, oral Overdose Dose: 150 mg Route: oral Route: single Dose: 150 mg Sources: https://pubmed.ncbi.nlm.nih.gov/14639058	unhealthy, 44 Health Status: unhealthy Age Group: 44 Sex: M Sources: https://pubmed.ncbi.nlm.nih.gov/14639058	Disc. AE: Drowsiness... AEs leading to discontinuation/dose reduction: Drowsiness Sources: https://pubmed.ncbi.nlm.nih.gov/14639058
540 mg single, oral Overdose Dose: 540 mg Route: oral Route: single Dose: 540 mg Sources: https://pubmed.ncbi.nlm.nih.gov/24674108	healthy, 59 Health Status: healthy Age Group: 59 Sex: F Sources: https://pubmed.ncbi.nlm.nih.gov/24674108	Sources: https://pubmed.ncbi.nlm.nih.gov/24674108
5 mg 1 times / day multiple, oral Recommended Dose: 5 mg, 1 times / day Route: oral Route: multiple Dose: 5 mg, 1 times / day Sources: https://pubmed.ncbi.nlm.nih.gov/26658807	unhealthy, 64 Health Status: unhealthy Age Group: 64 Sex: M Sources: https://pubmed.ncbi.nlm.nih.gov/26658807	Disc. AE: Hemoptysis, Hematuria... AEs leading to discontinuation/dose reduction: Hemoptysis Hematuria Dyspnea Cough Sources: https://pubmed.ncbi.nlm.nih.gov/26658807
10 mg 1 times / day multiple, oral Recommended Dose: 10 mg, 1 times / day Route: oral Route: multiple Dose: 10 mg, 1 times / day Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2011/009218s107lbl.pdf	unhealthy Health Status: unhealthy Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2011/009218s107lbl.pdf	Disc. AE: Bleeding... AEs leading to discontinuation/dose reduction: Bleeding (grade 5) Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2011/009218s107lbl.pdf

AEs

AE	Significance	Dose	Population
Loss of consciousness	Disc. AE	125 mg single, oral Overdose Dose: 125 mg Route: oral Route: single Dose: 125 mg Sources: https://pubmed.ncbi.nlm.nih.gov/14639058	unhealthy, 43 Health Status: unhealthy Age Group: 43 Sex: M Sources: https://pubmed.ncbi.nlm.nih.gov/14639058
Vomiting	Disc. AE	125 mg single, oral Overdose Dose: 125 mg Route: oral Route: single Dose: 125 mg Sources: https://pubmed.ncbi.nlm.nih.gov/14639058	unhealthy, 43 Health Status: unhealthy Age Group: 43 Sex: M Sources: https://pubmed.ncbi.nlm.nih.gov/14639058
Drowsiness	Disc. AE	150 mg single, oral Overdose Dose: 150 mg Route: oral Route: single Dose: 150 mg Sources: https://pubmed.ncbi.nlm.nih.gov/14639058	unhealthy, 44 Health Status: unhealthy Age Group: 44 Sex: M Sources: https://pubmed.ncbi.nlm.nih.gov/14639058
Cough	Disc. AE	5 mg 1 times / day multiple, oral Recommended Dose: 5 mg, 1 times / day Route: oral Route: multiple Dose: 5 mg, 1 times / day Sources: https://pubmed.ncbi.nlm.nih.gov/26658807	unhealthy, 64 Health Status: unhealthy Age Group: 64 Sex: M Sources: https://pubmed.ncbi.nlm.nih.gov/26658807
Dyspnea	Disc. AE	5 mg 1 times / day multiple, oral Recommended Dose: 5 mg, 1 times / day Route: oral Route: multiple Dose: 5 mg, 1 times / day Sources: https://pubmed.ncbi.nlm.nih.gov/26658807	unhealthy, 64 Health Status: unhealthy Age Group: 64 Sex: M Sources: https://pubmed.ncbi.nlm.nih.gov/26658807
Hematuria	Disc. AE	5 mg 1 times / day multiple, oral Recommended Dose: 5 mg, 1 times / day Route: oral Route: multiple Dose: 5 mg, 1 times / day Sources: https://pubmed.ncbi.nlm.nih.gov/26658807	unhealthy, 64 Health Status: unhealthy Age Group: 64 Sex: M Sources: https://pubmed.ncbi.nlm.nih.gov/26658807
Hemoptysis	Disc. AE	5 mg 1 times / day multiple, oral Recommended Dose: 5 mg, 1 times / day Route: oral Route: multiple Dose: 5 mg, 1 times / day Sources: https://pubmed.ncbi.nlm.nih.gov/26658807	unhealthy, 64 Health Status: unhealthy Age Group: 64 Sex: M Sources: https://pubmed.ncbi.nlm.nih.gov/26658807
Bleeding	grade 5 Disc. AE	10 mg 1 times / day multiple, oral Recommended Dose: 10 mg, 1 times / day Route: oral Route: multiple Dose: 10 mg, 1 times / day Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2011/009218s107lbl.pdf	unhealthy Health Status: unhealthy Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2011/009218s107lbl.pdf

Overview

CYP3A4	CYP2C9	CYP2D6	hERG
substrate 1946	substrate 1193 inhibitor 2438

OverviewOther

Other Inhibitor	Other Substrate	Other Inducer
	CYP2C19 1119 CYP2C8 810 CYP2C18 149 CYP1A2 1197

Drug as perpetrator

Target	Modality	Activity	Metabolite	Clinical evidence
CYP2C9 2497	inhibitor 4027 Sources: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5406237/	yes [Ki 8 uM]

Drug as victim

Target	Modality	Activity	Clinical evidence
CYP2C18 149	substrate 4014 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2011/009218s107lbl.pdf#page=14 Page: 14.0	yes
CYP2C19 1119	substrate 4014 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2011/009218s107lbl.pdf#page=14 Page: 14.0	yes
CYP2C8 810	substrate 4014 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2011/009218s107lbl.pdf#page=14 Page: 14.0	yes
CYP1A2 1197	substrate 4014 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2011/009218s107lbl.pdf#page=14 Page: 14.0	yes	likely (co-administration study) Comment: Inhibitors of CYP2C9, 1A2, and/or 3A4 have the potential to increase the effect (increase INR) of warfarin by increasing the exposure of warfarin; Inducers of CYP2C9, 1A2, and/or 3A4 have the potential to decrease the effect (decrease INR) of warfarin by decreasing the exposure of warfarin Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2011/009218s107lbl.pdf#page=14 Page: 14.0
CYP3A4 1946	substrate 4014 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2011/009218s107lbl.pdf#page=14 Page: 14.0	yes	likely (co-administration study) Comment: Inhibitors of CYP2C9, 1A2, and/or 3A4 have the potential to increase the effect (increase INR) of warfarin by increasing the exposure of warfarin; Inducers of CYP2C9, 1A2, and/or 3A4 have the potential to decrease the effect (decrease INR) of warfarin by decreasing the exposure of warfarin Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2011/009218s107lbl.pdf#page=14 Page: 14.0
CYP2C9 1193	substrate 4014 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2011/009218s107lbl.pdf#page=14 Page: 14.0	yes	yes (pharmacogenomic study) Comment: If the patient’s CYP2C9 and/or VKORC1 genotype are known, consider these ranges in choosing the initial dose. Patients with CYP2C9 1/3, 2/2, 2/3, and 3/3 may require more prolonged time (>2 to 4 weeks) to achieve maximum INR effect for a given dosage regimen than patients without these CYP variants; Inhibitors of CYP2C9, 1A2, and/or 3A4 have the potential to increase the effect (increase INR) of warfarin by increasing the exposure of warfarin; Inducers of CYP2C9, 1A2, and/or 3A4 have the potential to decrease the effect (decrease INR) of warfarin by decreasing the exposure of warfarin Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2011/009218s107lbl.pdf#page=14 Page: 14.0

Sourcing

Vendor/Aggregator	ID	URL
001 Chemical	DY560195	https://www.001chemical.com/chem/5543-57-7
001 Chemical	DY560196	https://www.001chemical.com/chem/5543-58-8
3B Scientific (Wuhan) Corp	3B3-029941	http://www.3bsc.com/index/pro_info.php?id=51198
AA Blocks	AA003248	https://www.aablocks.com/goods/Goods/detail?id=AA003248
abcr GmbH	AB463721	http://www.abcr.de/shop/en/AB463721
AbMole Bioscience	M6059	http://www.abmole.com/products/warfarin.html
Acadechem	ACDS-030017	http://www.acadechemical.com/product/104716
Achemtek	0104-006074	http://www.achemtek.com/81-81-2
Acros Organics	AC454680100	https://www.fishersci.com/shop/products/4-hydroxy-3-3-oxo-1-phenylbutyl-coumarin-97-acros-organics/AC454680100
AHH Chemical co.,ltd	MT-60432	http://www.ahhchemical.com/product/MT-60432.html
AK Scientific, Inc. (AKSCI)	N022	http://www.aksci.com/item_detail.php?cat=N022
Alfa Chemistry	AP5543588	https://reagents.alfa-chemistry.com/product/r-warfarin-cas-5543-58-8-13054.html
Alsachim	1632	http://www.alsachim.com/product-C2641-glo.bal-view.html
Ambinter	Amb19134261	http://www.ambinter.com/reference/19134261
Ambinter	Amb1967203	http://www.ambinter.com/reference/1967203
Ambinter	Amb22269258	http://www.ambinter.com/reference/22269258
Aurora Fine Chemicals LLC	K00.332.840	http://online.aurorafinechemicals.com/info?ID=K00.332.840
Avantor Inc	101096-426	https://us.vwr.com/store/catalog/product.jsp?catalog_number=101096-426
Avantor Inc	101096-428	https://us.vwr.com/store/catalog/product.jsp?catalog_number=101096-428
BLD Pharm	BD634785	http://www.bldpharm.com/products/951658-59-6.html
BOC Sciences	75472-93-4	https://www.bocsci.com/warfarin-d5-cas-75472-93-4-item-418144.html
BOC Sciences	773005-79-1	https://www.bocsci.com/r-warfarin-d5-cas-773005-79-1-item-485323.html
BOC Sciences	791013-22-4	https://www.bocsci.com/s-warfarin-d5-cas-791013-22-4-item-485322.html
Boerchem	BC209814	http://www.boerchem.com/?product_35612.html
Chem Scene	CS-2926	http://www.chemscene.com/81-81-2.html
ChemBridge	5103031	http://www.hit2lead.com/comp.asp?db=SC&id=5103031
Chemchart	cc-warfarin	http://chemchart.com/warfarin-detail.html
Chemenu	CM110351	http://www.chemenu.com/products/CM110351
ChemMol	30105039	http://www.chemmol.com/chemmol/30105039.html
ChemMol	44026663	http://www.chemmol.com/chemmol/44026663.html
ChemMol	49416852	http://www.chemmol.com/chemmol/49416852.html
ChemMol	96700285	http://www.chemmol.com/chemmol/96700285.html
ChemMol	96701916	http://www.chemmol.com/chemmol/96701916.html
Chemspace	CSSB00000064351	https://chem-space.com/CSSB00000064351
Clearsynth	CS-O-10379	https://www.clearsynth.com/en/CSO10379.html
DC Chemicals	DC9053	http://www.dcchemicals.com/product_show-Warfarin.html
Debye Scientific	DB-052729	http://www.debyesci.com/cas_5543-57-7.html
Debye Scientific	DB-052730	http://www.debyesci.com/cas_5543-58-8.html
Enamine	Z1692482575	https://www.enaminestore.com/catalog/Z1692482575
Finetech	FT-0635767	http://www.finetechnology-ind.com/prod/detail/pub/5543-57-7.html
Finetech	FT-0635768	http://www.finetechnology-ind.com/prod/detail/pub/5543-58-8.html
Glentham Life Sciences	GL2208	http://www.glentham.com/products/product/GL2208/
Glentham Life Sciences	GP7659	http://www.glentham.com/products/product/GP7659/
Huateng Pharma	F80010283	http://en.huatengsci.com/product/Warfarin.html
LGC Standards	DRE-C17940000	https://www.lgcstandards.com/US/en/p/DRE-C17940000
LGC Standards	DRE-XA17940000AL	https://www.lgcstandards.com/US/en/p/DRE-XA17940000AL
LGC Standards	LGCAMP0638.00-11	https://www.lgcstandards.com/US/en/p/LGCAMP0638.00-11
LGC Standards	LGCFOR0638.00	https://www.lgcstandards.com/US/en/p/LGCFOR0638.00
LGC Standards	MM0638.00	https://www.lgcstandards.com/US/en/p/MM0638.00
mcule	MCULE-1618253893	https://mcule.com/MCULE-1618253893/
MedChem Express	HY-B0687	https://www.medchemexpress.com/Warfarin.html
Molcore	MC560195	https://www.molcore.com/product/5543-57-7
Molcore	MC560196	https://www.molcore.com/product/5543-58-8
MuseChem	A000086	https://www.musechem.com/product/A000086.html
Oakwood	245858	http://www.oakwoodchemical.com/ProductsList.aspx?CategoryID=-2&txtSearch=167707&ExtHyperLink=1
OChem	4139	http://www.ocheminc.com/index.php?act=psearch&pid=006W854
Parchem	30305	http://www.parchem.com/chemical-supplier-distributor/Warfarin-020305.aspx
Selleck Chemicals	S4545	http://www.selleckchem.com/products/warfarin.html
Sigma-Aldrich	1719000_USP	https://www.sigmaaldrich.com/catalog/product/usp/1719000?utm_source=pubchem&utm_campaign=pubchem_2017&utm_medium=referral
Sigma-Aldrich	45706_SIAL	https://www.sigmaaldrich.com/catalog/product/sial/45706?utm_source=pubchem&utm_campaign=pubchem_2017&utm_medium=referral
Sigma-Aldrich	A2250_SIAL	https://www.sigmaaldrich.com/catalog/product/sial/a2250?utm_source=pubchem&utm_campaign=pubchem_2017&utm_medium=referral
Sigma-Aldrich	BP672_SIAL	https://www.sigmaaldrich.com/catalog/product/sial/bp672?utm_source=pubchem&utm_campaign=pubchem_2017&utm_medium=referral
Sigma-Aldrich	N13750_SUPELCO	https://www.sigmaaldrich.com/catalog/product/supelco/n13750?utm_source=pubchem&utm_campaign=pubchem_2017&utm_medium=referral
Sinfoo Biotech	S014360	http://www.sinfoobiotech.com/product/1017758
Smolecule	S547079	http://www.smolecule.com/products/s547079
Smolecule	S919271	https://www.smolecule.com/products/s919271
THE BioTek	bt-285232	https://www.thebiotek.com/product/inhibitors/bt-285232
Vesino Industrial Co Ltd	VC30411	http://www.vsnchem.com/goto/product/22479/
Yuhao Chemical	RT6489	http://www.chemyuhao.com/81-81-2.html

PubMed

Title	Date	PubMed
Chondrodysplasia punctata and maternal warfarin use during pregnancy.	1975 Mar	1121966
Abdominal wall hematoma as a complication of warfarinization.	2001 Apr	11267821
Spontaneous subcapsular renal hematoma secondary to anticoagulant therapy.	2001 Apr	11257671
Behçet's disease with a large intracardiac thrombus: a case report.	2001 Apr	11250984
Perioperative management and reversal of antithrombotic therapy.	2001 Feb	11270131
Thrombolysis and antithrombotic therapy for coronary artery disease.	2001 Feb	11270130
Antithrombotic therapy in valvular heart disease.	2001 Feb	11270129
Oral anticoagulants. Pharmacologic issues for use in the elderly.	2001 Feb	11270124
Subtherapeutic INR values associated with a switch to generic warfarin.	2001 Feb	11215837
Current trends in the management of deep venous thrombosis and postthrombotic syndrome.	2001 Feb	11214388
Implications of cytochrome P450 2C9 polymorphism on warfarin metabolism and dosing.	2001 Feb	11213860
Sevelamer hydrochloride (Renagel), a nonabsorbed phosphate-binding polymer, does not interfere with digoxin or warfarin pharmacokinetics.	2001 Feb	11210401
Stroke prophylaxis in nonvalvular atrial fibrillation.	2001 Feb	11176219
Endovascular caval interruption in pregnant patients with deep vein thrombosis of the lower extremity.	2001 Feb	11174792
Heparin and coumadin: delayed postpolypectomy bleeding.	2001 Feb	11174318
Asymptomatic atrial fibrillation: problems of management.	2001 Feb	11171747
How safely and for how long can warfarin therapy be withheld in prosthetic heart valve patients hospitalized with a major hemorrhage?	2001 Feb	11171726
Kidney retransplants after initial graft loss to vascular thrombosis.	2001 Feb	11168309
Images in clinical medicine. Retroperitoneal hemorrhage.	2001 Feb 1	11172166
Central venous device-related infection and thrombosis in patients treated with moderate dose continuous-infusion interleukin-2.	2001 Feb 15	11241250
Thrombus formation on atherosclerotic plaques: pathogenesis and clinical consequences.	2001 Feb 6	11177336
[Old adrenal hematoma: a case report].	2001 Jan	11235216
Generic substitution: issues for problematic drugs.	2001 Jan	11213935
Regarding clinical practice guidelines on the use of warfarin.	2001 Jan	11207851
The sin of omission: a systematic review of antithrombotic therapy to prevent stroke in atrial fibrillation.	2001 Jan	11207849
Hypertension due to renal artery occlusion in a patient with antiphospholipid syndrome.	2001 Jan	11206681
Cardiac and great vessel thrombosis in Behçet's disease.	2001 Jan	11201375
Effect of regimen complexity on patient satisfaction and compliance with warfarin therapy.	2001 Jan	11190902
HIV and thrombosis: a review.	2001 Jan	11177584
Molecular dynamics study of the IIA binding site in human serum albumin: influence of the protonation state of Lys195 and Lys199.	2001 Jan 18	11170635
Need for increased dose of warfarin in HIV patients taking nevirapine.	2001 Jan 26	11216940
Primary antiphospholipid syndrome masquerading as diabetic retinopathy.	2001 Jan-Feb	11163054
Sneddon's syndrome: a case report.	2001 Mar	11270293
Long-term results of venous revascularization for Paget-Schroetter syndrome in athletes.	2001 Mar	11265086
Prevention, diagnosis, and treatment of venous thromboembolic complications of gynecologic surgery.	2001 Mar	11262484
The association of vitamin K status with warfarin sensitivity at the onset of treatment.	2001 Mar	11260056
Aspirin does not influence the effect of angiotensin-converting enzyme inhibition on left ventricular ejection fraction 3 months after acute myocardial infarction.	2001 Mar	11246058
Hemoptysis in patients with renal insufficiency : the role of flexible bronchoscopy.	2001 Mar	11243958
Efficacy and safety of intravenous phytonadione (vitamin K1) in patients on long-term oral anticoagulant therapy.	2001 Mar	11243272
Improving medication safety across a multihospital system.	2001 Mar	11242719
Potential clinical efficacy and cost benefit of a transesophageal echocardiography-guided low-molecular-weight heparin (enoxaparin) approach to antithrombotic therapy in patients undergoing immediate cardioversion from atrial fibrillation.	2001 Mar	11241016
Atrial fibrillation and stroke : concepts and controversies.	2001 Mar	11239205
Low-dose warfarin fails to prolong survival of dual lumen venous dialysis catheters.	2001 Mar	11239055
Management of thrombosis in women with antiphospholipid syndrome.	2001 Mar	11219245
Adverse reactions to fluoroquinolones. an overview on mechanistic aspects.	2001 Mar	11172695
Profile of moxifloxacin drug interactions.	2001 Mar 15	11249829
Subarachnoid haemorrhage.	2001 Mar 17	11265984
Vitamin K for warfarin-associated coagulopathy.	2001 Mar 3	11247582
Clinical trials that have influenced the treatment of venous thromboembolism: a historical perspective.	2001 Mar 6	11242501
What is the optimal medical management of ischemic heart failure?	2001 Mar-Apr	11251129

Patents

Sample Use Guides

In Vivo Use Guide

Usual Adult Dose for Prevention of Thromboembolism in Atrial Fibrillation Initial dose: 2 to 5 mg orally once a day Maintenance dose: 2 to 10 mg orally once a day Usual Adult Dose for Myocardial Infarction Initial dose: 2 to 5 mg orally once a day Maintenance dose: 2 to 10 mg orally once a day Usual Adult Dose for Deep Vein Thrombosis - Prophylaxis Initial dose: 2 to 5 mg orally once a day Maintenance dose: 2 to 10 mg orally once a day

Route of Administration: Oral

In Vitro Use Guide

Vitamin K-reductase activity was inhibited by approximately 13 and 8% respectively when microsomal preparations from TAS and HW animals were incubated with 50 uM vitamin K1 and 10 uM warfarin.

Substance Class	Chemical Created by `admin` on `Mon Mar 31 18:21:33 GMT 2025` Edited by `admin` on `Mon Mar 31 18:21:33 GMT 2025`
Record UNII	5Q7ZVV76EI
Record Status	`Validated (UNII)`
Record Version

Download

Name

Type

Language

WARFARIN

Official Name

English

CHOICE

Preferred Name

English

NSC-59813

Code

English

(±)-4-HYDROXY-3-(3-OXO-1-PHENYLBUTYL)-2H-1-BENZOPYRAN-2-ONE

Systematic Name

English

warfarin [INN]

Common Name

English

WARFARIN [MI]

Common Name

English

WARFARIN [USP-RS]

Common Name

English

WARFARIN [VANDF]

Common Name

English

WARFARIN [ISO]

Common Name

English

WARFARIN [HSDB]

Common Name

English

Warfarin [WHO-DD]

Common Name

English

4-HYDROXY-3-(3-OXO-1-PHENYLBUTYL)-2H-1-BENZOPYRAN-2-ONE

Systematic Name

English

4-HYDROXY-3-((1RS)-3-OXO-1-PHENYLBUTYL)COUMARIN

Systematic Name

English

Classification Tree Code System Code

NDF-RT

N0000175964