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Details

Stereochemistry ACHIRAL
Molecular Formula C15H12NO3.Na.H2O
Molecular Weight 295.2657
Optical Activity NONE
Defined Stereocenters 0 / 0
E/Z Centers 0
Charge 0

SHOW SMILES / InChI
Structure of AMFENAC SODIUM

SMILES

O.[Na+].NC1=C(CC([O-])=O)C=CC=C1C(=O)C2=CC=CC=C2

InChI

InChIKey=QZNJPJDUBTYMRS-UHFFFAOYSA-M
InChI=1S/C15H13NO3.Na.H2O/c16-14-11(9-13(17)18)7-4-8-12(14)15(19)10-5-2-1-3-6-10;;/h1-8H,9,16H2,(H,17,18);;1H2/q;+1;/p-1

HIDE SMILES / InChI

Molecular Formula HO
Molecular Weight 17.0073
Charge -1
Count
Stereochemistry ACHIRAL
Additional Stereochemistry No
Defined Stereocenters 0 / 0
E/Z Centers 0
Optical Activity NONE

Molecular Formula C15H13NO3
Molecular Weight 255.2686
Charge 0
Count
Stereochemistry ACHIRAL
Additional Stereochemistry No
Defined Stereocenters 0 / 0
E/Z Centers 0
Optical Activity NONE

Molecular Formula Na
Molecular Weight 22.98976928
Charge 1
Count
Stereochemistry ACHIRAL
Additional Stereochemistry No
Defined Stereocenters 0 / 0
E/Z Centers 0
Optical Activity NONE

Description
Curator's Comment: Description was created based on several sources, including https://link.springer.com/article/10.1007/BF03299088 | http://www.rad-ar.or.jp/siori/english/kekka.cgi?n=35377 | https://www.accessdata.fda.gov/drugsatfda_docs/nda/2012/203491Orig1s000MedR.pdf | https://www.accessdata.fda.gov/drugsatfda_docs/label/2005/021862lbl.pdf | https://www.ncbi.nlm.nih.gov/pubmed/10850857

Amfenac (AHR 5850) is a non-steroidal anti-inflammatory compound possessing antipyretic and analgesic properties. It is an inhibitor of cyclooxygenases. Amfenac sodium has been on the Japanese market since 1986 (as FENAZOX®, Meiji) in an oral dosage form (50 mg, four-times-daily) indicated for the treatment of pain and inflammation associated with rheumatoid and osteoarthritis and low back pain, as well as the treatment of pain and inflammation following surgery, injury or tooth extraction. Amfenac is an active moiety of nepafenac (amfenac amide), the prodrug has very weak cyclooxygenase inhibitory activity whereas amfenac exhibits more potent cyclooxygenase activity. Nepafenac at a concentration of 0.1% (NEVANAC) was approved for marketing in the US in 2005. Nepafenac is also approved for marketing in the European Union(EU) and Japan as well as over 60 other countries for the treatment of postoperative pain and inflammation associated with cataract surgery.

Approval Year

Targets

Targets

Primary TargetPharmacologyConditionPotency
64.3 µM [IC50]
0.15 µM [IC50]
0.25 µM [IC50]
0.15 µM [IC50]
Conditions

Conditions

ConditionModalityTargetsHighest PhaseProduct
Palliative
NEVANAC

Approved Use

NEVANAC ophthalmic suspension is a nonsteroidal, antiinflammatory prodrug indicated for the treatment of pain and inflammation associated with cataract surgery

Launch Date

2005
Primary
FENAZOX

Approved Use

FENAZOX CAPSULES (Amfenac sodium hydrate) is usually used to relieve inflammation and pain in chronic rheumatoid arthritis, osteoarthritis, low back pain, shoulder periarthritis, cervico-omo-brachial syndrome, temporomandibular joint disease, post-operative state, post-traumatic state or post-odontectomy state.

Launch Date

1985
Cmax

Cmax

ValueDoseCo-administeredAnalytePopulation
5.62 μg/mL
50 mg single, oral
dose: 50 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
AMFENAC plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: MALE
food status: FASTED
70.1 ng/mL
1 drop single, ocular
dose: 1 drop
route of administration: Ocular
experiment type: SINGLE
co-administered:
AMFENAC aqueous humor
Homo sapiens
population: UNHEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
205.3 ng/mL
1 drop single, ocular
dose: 1 drop
route of administration: Ocular
experiment type: SINGLE
co-administered:
NEPAFENAC aqueous humor
Homo sapiens
population: UNHEALTHY
age: ADULT
sex: FEMALE / MALE
food status: UNKNOWN
0.847 ng/mL
1 drop 1 times / day steady-state, ocular
dose: 1 drop
route of administration: Ocular
experiment type: STEADY-STATE
co-administered:
NEPAFENAC plasma
Homo sapiens
population: UNKNOWN
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
0.921 ng/mL
1 drop single, ocular
dose: 1 drop
route of administration: Ocular
experiment type: SINGLE
co-administered:
NEPAFENAC plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: FEMALE / MALE
food status: UNKNOWN
0.847 ng/mL
1 drop 1 times / day steady-state, ocular
dose: 1 drop
route of administration: Ocular
experiment type: STEADY-STATE
co-administered:
NEPAFENAC plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: FEMALE / MALE
food status: UNKNOWN
1.15 ng/mL
1 drop single, ocular
dose: 1 drop
route of administration: Ocular
experiment type: SINGLE
co-administered:
AMFENAC plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: FEMALE / MALE
food status: UNKNOWN
1.13 ng/mL
1 drop 1 times / day steady-state, ocular
dose: 1 drop
route of administration: Ocular
experiment type: STEADY-STATE
co-administered:
AMFENAC plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: FEMALE / MALE
food status: UNKNOWN
AUC

AUC

ValueDoseCo-administeredAnalytePopulation
6.11 μg × h/mL
50 mg single, oral
dose: 50 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
AMFENAC plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: MALE
food status: FASTED
178.1 ng × h/mL
1 drop single, ocular
dose: 1 drop
route of administration: Ocular
experiment type: SINGLE
co-administered:
AMFENAC aqueous humor
Homo sapiens
population: UNHEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
331.1 ng × h/mL
1 drop single, ocular
dose: 1 drop
route of administration: Ocular
experiment type: SINGLE
co-administered:
NEPAFENAC aqueous humor
Homo sapiens
population: UNHEALTHY
age: ADULT
sex: FEMALE / MALE
food status: UNKNOWN
1.57 ng × h/mL
1 drop single, ocular
dose: 1 drop
route of administration: Ocular
experiment type: SINGLE
co-administered:
NEPAFENAC plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: FEMALE / MALE
food status: UNKNOWN
1.43 ng × h/mL
1 drop 1 times / day steady-state, ocular
dose: 1 drop
route of administration: Ocular
experiment type: STEADY-STATE
co-administered:
NEPAFENAC plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: FEMALE / MALE
food status: UNKNOWN
3.6 ng × h/mL
1 drop single, ocular
dose: 1 drop
route of administration: Ocular
experiment type: SINGLE
co-administered:
AMFENAC plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: FEMALE / MALE
food status: UNKNOWN
3.7 ng × h/mL
1 drop 1 times / day steady-state, ocular
dose: 1 drop
route of administration: Ocular
experiment type: STEADY-STATE
co-administered:
AMFENAC plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: FEMALE / MALE
food status: UNKNOWN
T1/2

T1/2

ValueDoseCo-administeredAnalytePopulation
1.3 h
50 mg single, oral
dose: 50 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
AMFENAC plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: MALE
food status: FASTED
0.85 h
1 drop single, ocular
dose: 1 drop
route of administration: Ocular
experiment type: SINGLE
co-administered:
NEPAFENAC plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: FEMALE / MALE
food status: UNKNOWN
0.74 h
1 drop 1 times / day steady-state, ocular
dose: 1 drop
route of administration: Ocular
experiment type: STEADY-STATE
co-administered:
NEPAFENAC plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: FEMALE / MALE
food status: UNKNOWN
5.49 h
1 drop single, ocular
dose: 1 drop
route of administration: Ocular
experiment type: SINGLE
co-administered:
AMFENAC plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: FEMALE / MALE
food status: UNKNOWN
6.26 h
1 drop 1 times / day steady-state, ocular
dose: 1 drop
route of administration: Ocular
experiment type: STEADY-STATE
co-administered:
AMFENAC plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: FEMALE / MALE
food status: UNKNOWN
Doses

Doses

DosePopulationAdverse events​
1 drop 1 times / day multiple, topical
Recommended
Dose: 1 drop, 1 times / day
Route: topical
Route: multiple
Dose: 1 drop, 1 times / day
Sources:
unhealthy, 68.7+/- 9.08
Health Status: unhealthy
Age Group: 68.7+/- 9.08
Sex: M+F
Sources:
Disc. AE: Hypersensitivity...
AEs leading to
discontinuation/dose reduction:
Hypersensitivity (0.12%)
Sources:
1 drop 1 times / day multiple, topical
Recommended
Dose: 1 drop, 1 times / day
Route: topical
Route: multiple
Dose: 1 drop, 1 times / day
Sources:
unhealthy
Disc. AE: Bleeding, Healing delayed...
AEs leading to
discontinuation/dose reduction:
Bleeding
Healing delayed
Corneal disorder (NOS)
Keratitis
Sources:
100 mg single, oral
Studied dose
Dose: 100 mg
Route: oral
Route: single
Dose: 100 mg
Sources:
healthy
Health Status: healthy
Sex: M+F
Food Status: UNKNOWN
Sources:
AEs

AEs

AESignificanceDosePopulation
Hypersensitivity 0.12%
Disc. AE
1 drop 1 times / day multiple, topical
Recommended
Dose: 1 drop, 1 times / day
Route: topical
Route: multiple
Dose: 1 drop, 1 times / day
Sources:
unhealthy, 68.7+/- 9.08
Health Status: unhealthy
Age Group: 68.7+/- 9.08
Sex: M+F
Sources:
Bleeding Disc. AE
1 drop 1 times / day multiple, topical
Recommended
Dose: 1 drop, 1 times / day
Route: topical
Route: multiple
Dose: 1 drop, 1 times / day
Sources:
unhealthy
Corneal disorder (NOS) Disc. AE
1 drop 1 times / day multiple, topical
Recommended
Dose: 1 drop, 1 times / day
Route: topical
Route: multiple
Dose: 1 drop, 1 times / day
Sources:
unhealthy
Healing delayed Disc. AE
1 drop 1 times / day multiple, topical
Recommended
Dose: 1 drop, 1 times / day
Route: topical
Route: multiple
Dose: 1 drop, 1 times / day
Sources:
unhealthy
Keratitis Disc. AE
1 drop 1 times / day multiple, topical
Recommended
Dose: 1 drop, 1 times / day
Route: topical
Route: multiple
Dose: 1 drop, 1 times / day
Sources:
unhealthy
Overview

Overview

CYP3A4CYP2C9CYP2D6hERG



OverviewOther

Other InhibitorOther SubstrateOther Inducer







Drug as perpetrator​

Drug as perpetrator​

TargetModalityActivityMetaboliteClinical evidence
inconclusive
inconclusive
no
no
no
no
no
no
no
no
no
no
no
no
Drug as victim
PubMed

PubMed

TitleDatePubMed
Nepafenac: an ophthalmic nonsteroidal antiinflammatory drug for pain after cataract surgery.
2013-06
Effect of preoperative use of topical prednisolone acetate, ketorolac tromethamine, nepafenac and placebo, on the maintenance of intraoperative mydriasis during cataract surgery: a randomized trial.
2012-07
Ocular pharmacokinetics of 0.45% ketorolac tromethamine.
2010-12-01
Use of nepafenac (Nevanac) in combination with intravitreal anti-VEGF agents in the treatment of recalcitrant exudative macular degeneration requiring monthly injections.
2010-10-28
Nepafenac-assisted mydriasis in a rabbit model.
2010-10
Comparison of three strains of diabetic rats with respect to the rate at which retinopathy and tactile allodynia develop.
2010-08-15
Topical nepafenac for treatment of exudative age-related macular degeneration.
2010-03
The effects of nepafenac and amfenac on retinal angiogenesis.
2010-02-15
NSAIDs in combination therapy for the treatment of chronic pseudophakic cystoid macular edema.
2010-02
Impact of nepafenac 0.1% on macular thickness and postoperative visual acuity after cataract surgery in patients at low risk for cystoid macular oedema.
2010-01
Inflammatory mediators and angiogenic factors in choroidal neovascularization: pathogenetic interactions and therapeutic implications.
2010
Diabetic cataract-pathogenesis, epidemiology and treatment.
2010
Increased neuronal nitric oxide synthase activity in retinal neurons in early diabetic retinopathy.
2009-11-09
Differential effects of non-steroidal anti-inflammatory drugs on mitochondrial dysfunction during oxidative stress.
2009-10-01
Vitreous nonsteroidal antiinflammatory drug concentrations and prostaglandin E2 levels in vitrectomy patients treated with ketorolac 0.4%, bromfenac 0.09%, and nepafenac 0.1%.
2009-10
Nepafenac-associated bilateral corneal melt after photorefractive keratectomy.
2009-09
Nepafenac: new drug. After cataract surgery: just another NSAID eye drop. No better than other NSAID eye drops, and less convenient to use.
2009-08
Nepafenac dosing frequency for ocular pain and inflammation associated with cataract surgery.
2009-08
Gateways to clinical trials.
2009-04
Etiology and treatment of the inflammatory causes of cystoid macular edema.
2009
Intracameral dexamethasone reduces inflammation on the first postoperative day after cataract surgery in eyes with and without glaucoma.
2009
Inhibition of surgically induced miosis and prevention of postoperative macular edema with nepafenac.
2009
Management of ocular inflammation and pain following cataract surgery: focus on bromfenac ophthalmic solution.
2009
Treatment of cystoid macular edema with the new-generation NSAID nepafenac 0.1%.
2009
Topical nepafenac in the treatment of diabetic macular edema.
2008-12
Nepafenac dosing frequency for ocular pain and inflammation associated with cataract surgery.
2008-12
Effect of nepafenac sodium 0.1% on delayed corneal epithelial healing and haze after photorefractive keratectomy: retrospective comparative study.
2008-09
Re: Pharmacokinetics and pharmacodynamics of nepafenac, amfenac, ketorolac, and bromfenac.
2008-08
Topical nepafenac as an alternate treatment for cystoid macular edema in steroid responsive patients.
2008-07-31
Topical ophthalmic NSAIDs: a discussion with focus on nepafenac ophthalmic suspension.
2008-06
Topical ocular delivery of NSAIDs.
2008-06
Amfenac increases the radiosensitivity of uveal melanoma cell lines.
2008-05
Effects of topical nepafenac on corneal epithelial healing time and postoperative pain after PRK: a bilateral, prospective, randomized, masked trial.
2008-04
Double-masked comparison of ketorolac tromethamine 0.4% versus nepafenac sodium 0.1% for postoperative healing rates and pain control in eyes undergoing surface ablation.
2008-04
Double-masked comparison of ketorolac tromethamine 0.4% versus nepafenac sodium 0.1% for postoperative healing rates and pain control in eyes undergoing surface ablation.
2008-04
Corneal melting after use of nepafenac in a patient with chronic cystoid macular edema after cataract surgery.
2008-03
Ketorolac versus nepafenac in cataract surgery.
2008-03
Effects of nonsteroidal ophthalmic drops on epithelial healing and pain in patients undergoing bilateral photorefractive keratectomy (PRK).
2008-01-01
Analgesic and anti-inflammatory effectiveness of nepafenac 0.1% for cataract surgery.
2007-12
Re: Prostaglandin E(2) inhibition and aqueous concentration of ketorolac 0.4% and nepafenac 0.1% in patients undergoing phacoemulsification.
2007-12
Cystoid and diabetic macular edema treated with nepafenac 0.1%.
2007-12
The effects of a cyclooxygenase-2 (COX-2) expression and inhibition on human uveal melanoma cell proliferation and macrophage nitric oxide production.
2007-11-27
Nepafenac-associated corneal melt.
2007-11
Ketorolac tromethamine LS 0.4% versus nepafenac 0.1% in patients having cataract surgery. Prospective randomized double-masked clinical trial.
2007-11
Double-masked study of the effects of nepafenac 0.1% and ketorolac 0.4% on corneal epithelial wound healing and pain after photorefractive keratectomy.
2007-09-29
Case of corneal melting associated with the use of topical nepafenac.
2007-09
Incidence of visually significant pseudophakic macular edema after uneventful phacoemulsification in patients treated with nepafenac.
2007-09
In vivo pharmacokinetics and in vitro pharmacodynamics of nepafenac, amfenac, ketorolac, and bromfenac.
2007-09
Prostaglandin E2 inhibition and aqueous concentration of ketorolac 0.4% (acular LS) and nepafenac 0.1% (nevanac) in patients undergoing phacoemulsification.
2007-07
Contributions of inflammatory processes to the development of the early stages of diabetic retinopathy.
2007
Patents

Sample Use Guides

In Vivo Use Guide
One drop of Nepafenac ophthalmic suspension, 0.3% should be applied to the affected eye one-time-daily beginning 1 day prior to cataract surgery, continued on the day of surgery and through the first 2 weeks of the postoperative period. An additional drop should be administered 30 to 120 minutes prior to surgery.
Route of Administration: Topical
Nepafenac exhibited only weak COX-1 inhibitory activity (IC50 = 64.3 uM). However, amfenac, an active metabolite of nepafenac, was a potent inhibitor of COX-1 (IC50 = 0.25 uM) and COX-2 activity (IC50 = 0.15 uM).
Substance Class Chemical
Created
by admin
on Mon Mar 31 18:39:18 GMT 2025
Edited
by admin
on Mon Mar 31 18:39:18 GMT 2025
Record UNII
PPF9V8J28Y
Record Status Validated (UNII)
Record Version
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Name Type Language
AMFENAC SODIUM
MART.   USAN  
USAN  
Official Name English
FENAZOX
Preferred Name English
AMFENAC SODIUM [USAN]
Common Name English
AHR-5850D
Code English
AMFENAC SODIUM SALT MONOHYDRATE
MI  
Common Name English
AMFENAC SODIUM SALT MONOHYDRATE [MI]
Common Name English
AMFENAC SODIUM HYDRATE [JAN]
Common Name English
Sodium (2-amino-3-benzoylphenyl)acetate monohydrate
Systematic Name English
AMFENAC SODIUM [MART.]
Common Name English
BENZENEACETIC ACID, 2-AMINO-3-BENZOYL-, SODIUM SALT, MONOHYDRATE
Common Name English
AMFENAC SODIUM HYDRATE
JAN  
Common Name English
SODIUM AMFENAC
Common Name English
Classification Tree Code System Code
NCI_THESAURUS C257
Created by admin on Mon Mar 31 18:39:18 GMT 2025 , Edited by admin on Mon Mar 31 18:39:18 GMT 2025
Code System Code Type Description
PUBCHEM
23663941
Created by admin on Mon Mar 31 18:39:18 GMT 2025 , Edited by admin on Mon Mar 31 18:39:18 GMT 2025
PRIMARY
CHEBI
31202
Created by admin on Mon Mar 31 18:39:18 GMT 2025 , Edited by admin on Mon Mar 31 18:39:18 GMT 2025
PRIMARY
NCI_THESAURUS
C142919
Created by admin on Mon Mar 31 18:39:18 GMT 2025 , Edited by admin on Mon Mar 31 18:39:18 GMT 2025
PRIMARY
FDA UNII
PPF9V8J28Y
Created by admin on Mon Mar 31 18:39:18 GMT 2025 , Edited by admin on Mon Mar 31 18:39:18 GMT 2025
PRIMARY
ChEMBL
CHEMBL25146
Created by admin on Mon Mar 31 18:39:18 GMT 2025 , Edited by admin on Mon Mar 31 18:39:18 GMT 2025
PRIMARY
EVMPD
SUB00433MIG
Created by admin on Mon Mar 31 18:39:18 GMT 2025 , Edited by admin on Mon Mar 31 18:39:18 GMT 2025
PRIMARY
MERCK INDEX
m1659
Created by admin on Mon Mar 31 18:39:18 GMT 2025 , Edited by admin on Mon Mar 31 18:39:18 GMT 2025
PRIMARY Merck Index
CAS
61618-27-7
Created by admin on Mon Mar 31 18:39:18 GMT 2025 , Edited by admin on Mon Mar 31 18:39:18 GMT 2025
PRIMARY
EPA CompTox
DTXSID30977216
Created by admin on Mon Mar 31 18:39:18 GMT 2025 , Edited by admin on Mon Mar 31 18:39:18 GMT 2025
PRIMARY
Related Record Type Details
PARENT -> SALT/SOLVATE
ANHYDROUS->SOLVATE
Related Record Type Details
ACTIVE MOIETY