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Details

Stereochemistry ACHIRAL
Molecular Formula C9H10Cl2N4.2ClH
Molecular Weight 318.03
Optical Activity NONE
Defined Stereocenters 0 / 0
E/Z Centers 0
Charge 0

SHOW SMILES / InChI
Structure of APRACLONIDINE DIHYDROCHLORIDE

SMILES

Cl.Cl.NC1=CC(Cl)=C(NC2=NCCN2)C(Cl)=C1

InChI

InChIKey=XLKICJXKWJUSPK-UHFFFAOYSA-N
InChI=1S/C9H10Cl2N4.2ClH/c10-6-3-5(12)4-7(11)8(6)15-9-13-1-2-14-9;;/h3-4H,1-2,12H2,(H2,13,14,15);2*1H

HIDE SMILES / InChI

Description
Curator's Comment: description was created based on several sources, including: https://www.drugs.com/ppa/apraclonidine.html | https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=dc7d3a9f-c0b9-411c-9c62-0a14f1718b00

Apraclonidine (IOPIDINE) is an α2-adrenergic receptor agonist and a weak α1-adrenergic receptor agonist. It is used for the prevention and treatment of postsurgical intraocular pressure elevation. The following adverse events, occurring in less than 2% of patients, were reported in association with the use of IOPIDINE Ophthalmic Solution in laser surgery: ocular injection, upper lid elevation, irregular heart rate, nasal decongestion, ocular inflammation, conjunctival blanching, and mydriasis. Interactions with other agents have not been investigated.

Approval Year

TargetsConditions

Conditions

ConditionModalityTargetsHighest PhaseProduct
Preventing
IOPIDINE

Approved Use

Apraclonidine hydrochloride ophthalmic solution) is indicated to control or prevent postsurgical elevations in intraocular pressure that occur in patients after argon laser trabeculplasty, argon laser iridotomy or Nd:YAG posterior capsulotomy.

Launch Date

1987
Cmax

Cmax

ValueDoseCo-administeredAnalytePopulation
0.9 ng/mL
1 drop 3 times / day multiple, ocular
dose: 1 drop
route of administration: Ocular
experiment type: MULTIPLE
co-administered:
APRACLONIDINE plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
T1/2

T1/2

ValueDoseCo-administeredAnalytePopulation
8 h
1 drop 3 times / day multiple, ocular
dose: 1 drop
route of administration: Ocular
experiment type: MULTIPLE
co-administered:
APRACLONIDINE plasma
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
Funbound

Funbound

ValueDoseCo-administeredAnalytePopulation
74.5%
unknown, topical
APRACLONIDINE plasma
Homo sapiens
population: UNKNOWN
age: UNKNOWN
sex: UNKNOWN
food status: UNKNOWN
Doses

Doses

DosePopulationAdverse events​
0.5 % 2 times / day multiple, ophthalmic
Recommended
Dose: 0.5 %, 2 times / day
Route: ophthalmic
Route: multiple
Dose: 0.5 %, 2 times / day
Sources:
unhealthy, adult
Health Status: unhealthy
Age Group: adult
Sex: unknown
Sources:
Disc. AE: Allergic reaction...
AEs leading to
discontinuation/dose reduction:
Allergic reaction (12.9%)
Sources:
AEs

AEs

AESignificanceDosePopulation
Allergic reaction 12.9%
Disc. AE
0.5 % 2 times / day multiple, ophthalmic
Recommended
Dose: 0.5 %, 2 times / day
Route: ophthalmic
Route: multiple
Dose: 0.5 %, 2 times / day
Sources:
unhealthy, adult
Health Status: unhealthy
Age Group: adult
Sex: unknown
Sources:
Overview

Overview

CYP3A4CYP2C9CYP2D6hERG

OverviewOther

Other InhibitorOther SubstrateOther Inducer

Drug as victim

Drug as victim

TargetModalityActivityMetaboliteClinical evidence
yes
PubMed

PubMed

TitleDatePubMed
[Unilateral allergic contact dermatitis of the eyelid caused by Iopimax].
2009-12
Current pharmacologic testing for Horner syndrome.
2009-09
Possible effect of systemic sympathicolytic drugs on apraclonidine test.
2009-08
Exposure to topical apraclonidine in children with glaucoma.
2009-06-16
Brimonidine and apraclonidine as vasoconstrictors in adjustable strabismus surgery.
2009-04
Ocular decompression retinopathy after trabeculectomy with mitomycin-C for angle recession glaucoma.
2009-02-25
Nd: YAG capsulotomy for posterior capsule opacification after combined clear corneal phacoemulsification and vitrectomy.
2009-02
[Usefulness of apraclonidine in the diagnosis of Horner syndrome].
2009-02
False-negative apraclonidine testing in acute Horner syndrome.
2009-02
Topical apraclonidine to diagnose Bernard-Horner syndrome.
2009
Oral versus topical carbonic anhydrase inhibitors in ocular hypertension after scleral tunnel cataract surgery.
2009
Clinical efficacy and neuroprotective effects of brimonidine in the management of glaucoma and ocular hypertension.
2009
Recurrent serous macular detachment after topical ocular hypotensive medication.
2008-11
Fixed combination of topical brimonidine 0.2% and timolol 0.5% for glaucoma and uncontrolled intraocular pressure.
2008-09
Pupillary autonomic neuropathy simulating partial Horner syndrome in diabetes mellitus and its reversal with control of blood glucose.
2008-09
Positive apraclonidine test within two weeks of onset of Horner syndrome caused by carotid artery dissection.
2008-09
Use of 0.5% apraclonidine solution in evaluation of blepharoptosis.
2008-07-23
Post-penetrating keratoplasty glaucoma.
2008-06-27
The role of cyclosporine and mycophenolate in an orthotopic porcine-to-rat corneal xenotransplantation.
2008-06
False negative apraclonidine test in two patients with Horner syndrome.
2008-05
Central alpha-2 adrenergic eye drops: case series of 3 pediatric systemic poisonings.
2008-03
Effects of central corneal thickness on the efficacy of topical ocular hypotensive medications.
2008-03
Differences in the histopathology and matrix metalloproteinase expression in Tenon's tissue of primary open-angle glaucoma and primary angle-closure glaucoma.
2008-03
Acupuncture treatment for idiopathic Horner's syndrome in a dog.
2008-03
Medical management of primary open-angle glaucoma: Best practices associated with enhanced patient compliance and persistency.
2008-02-02
The pupil.
2008-02
[Efficacy of topic ocular hipotensive agents after posterior capsulotomy].
2008-01-13
The acute morphologic changes that occur at the optic nerve head induced by medical reduction of intraocular pressure.
2007-09
Horner's syndrome, Pseudo-Horner's syndrome, and simple anisocoria.
2007-09
Congenital or acquired Horner's?
2007-08-19
Apraclonidine in the diagnosis of Horner's syndrome.
2007-07
Adverse effects of apraclonidine used in the diagnosis of Horner syndrome in infants.
2007-06
Pharmacologic reversal of Horner's syndrome-related ptosis with apraclonidine.
2007-05
Genomic and functional conservation of sedative-hypnotic targets in the zebrafish.
2007-04
Topical apraclonidine testing of pupillary sympathetic denervation in diabetic patients.
2006-12
Corneal thickness- and age-related biomechanical properties of the cornea measured with the ocular response analyzer.
2006-12
Efficacy of apraclonidine 0.5% in the diagnosis of Horner syndrome in pediatric patients under low or high illumination.
2006-09
Brinzolamide 1% versus apraclonidine 0.5% to prevent intraocular pressure elevation after neodymium:YAG laser posterior capsulotomy.
2006-09
Congenital Horner's syndrome and the usefulness of the apraclonidine test in its diagnosis.
2006-09
Antagonism by imidazoline-type drugs of muscarinic and other receptors in the guinea-pig ileum.
2006-07
The management of glaucoma and intraocular hypertension: current approaches and recent advances.
2006-06
Comparing efficacies of 0.5% apraclonidine with 4% cocaine in the diagnosis of horner syndrome in pediatric patients.
2006-06
The effect of topical apraclonidine on subconjunctival hemorrhage and flap adherence in LASIK patients.
2006-06
Reduction of anterior-segment vascularity with preoperative topical apraclonidine 1%.
2006-04
Topical apraclonidine testing discloses pupillary sympathetic denervation in diabetic patients.
2006-03
Effect of 0.5% apraclonidine on ptosis in Horner syndrome.
2006-01-19
Comparative efficacy of acetazolamide and apraclonidine in the control of intraocular pressure following phacoemulsification.
2006
Effect of apraclonidine versus dorzolamide on intraocular pressure after phacoemulsification.
2005-12-17
Apraclonidine and LASIK.
2005-12
Brimonidine 0.15% versus apraclonidine 0.5% for prevention of intraocular pressure elevation after anterior segment laser surgery.
2005-09
Patents

Sample Use Guides

One drop of Ophthalmic Solution should be instilled in the scheduled operative eye one hour before initiating anterior segment laser surgery and a second drop should be instilled to the same eye immediately upon completion of the laser surgical procedure. Use a separate container for each single-drop dose and discard each container after use.
Route of Administration: Topical
The alpha(2)-adrenoceptor agonists apraclonidine induced vasoconstriction in the porcine ciliary artery with the potency EC(50) equal to 13.0 nM.
Name Type Language
APRACLONIDINE DIHYDROCHLORIDE [MI]
Preferred Name English
APRACLONIDINE DIHYDROCHLORIDE
MI  
Common Name English
1,4-BENZENEDIAMINE, 2,6-DICHLORO-N1-(4,5-DIHYDRO-1H-IMIDAZOL-2-YL)-, HYDROCHLORIDE (1:2)
Systematic Name English
2,6-DICHLORO-N1-(4,5-DIHYDRO-1H-IMIDAZOL-2-YL)-1,4-BENZENEDIAMINE DIHYDROCHLORIDE
Systematic Name English
P-AMINOCLONIDINE DIHYDROCHLORIDE
Common Name English
Code System Code Type Description
CAS
73217-88-6
Created by admin on Mon Mar 31 23:26:50 GMT 2025 , Edited by admin on Mon Mar 31 23:26:50 GMT 2025
PRIMARY
MERCK INDEX
m2008
Created by admin on Mon Mar 31 23:26:50 GMT 2025 , Edited by admin on Mon Mar 31 23:26:50 GMT 2025
PRIMARY Merck Index
FDA UNII
5AVH7Z1L0J
Created by admin on Mon Mar 31 23:26:50 GMT 2025 , Edited by admin on Mon Mar 31 23:26:50 GMT 2025
PRIMARY
PUBCHEM
21479682
Created by admin on Mon Mar 31 23:26:50 GMT 2025 , Edited by admin on Mon Mar 31 23:26:50 GMT 2025
PRIMARY