U.S. Department of Health & Human Services Divider Arrow National Institutes of Health Divider Arrow NCATS

Details

Stereochemistry RACEMIC
Molecular Formula C20H23NO.ClH
Molecular Weight 329.864
Optical Activity ( + / - )
Defined Stereocenters 0 / 1
E/Z Centers 0
Charge 0

SHOW SMILES / InChI
Structure of QUIFENADINE HYDROCHLORIDE

SMILES

Cl.OC(C1CN2CCC1CC2)(C3=CC=CC=C3)C4=CC=CC=C4

InChI

InChIKey=MVCBFPDJWSQMNY-UHFFFAOYSA-N
InChI=1S/C20H23NO.ClH/c22-20(17-7-3-1-4-8-17,18-9-5-2-6-10-18)19-15-21-13-11-16(19)12-14-21;/h1-10,16,19,22H,11-15H2;1H

HIDE SMILES / InChI

Molecular Formula C20H23NO
Molecular Weight 293.4027
Charge 0
Count
MOL RATIO 1 MOL RATIO (average)
Stereochemistry RACEMIC
Additional Stereochemistry No
Defined Stereocenters 0 / 1
E/Z Centers 0
Optical Activity ( + / - )

Molecular Formula ClH
Molecular Weight 36.461
Charge 0
Count
MOL RATIO 1 MOL RATIO (average)
Stereochemistry ACHIRAL
Additional Stereochemistry No
Defined Stereocenters 0 / 0
E/Z Centers 0
Optical Activity NONE

Description

Quifenadine is an antihistaminic agent. Quifenadine both blocks histamine H1-receptors in the peripheral tissues, and activates enzyme diaminoxidase (histaminase), due to this decreasing the histamine concentration in tissues. It is indicated in cases of pollinosis, acute and chronic urticaria, seasonal rhinitis (hay fever), allergic rhinitis, allergic conjunctivitis, angioneurotic Quinqe’s edema, dermatosis (eczema, neurodermatitis, pruritus etc.), allergic reactions caused by food or medicines. Quifanidine exhibits antiarrhythmic activity in children with frequent premature beats, without significant QT prolongation, or sinus node depression.

Approval Year

Sample Use Guides

In Vivo Use Guide
For adults: single dose is 25-50 mg 2-4 times a day. Maximum daily dose is 200 mg. For children older than 12 years - 25 mg 2-3 times a day. The duration of the course of treatment is 10-20 days. If it is necessary, the course of treatment may be repeated.
Route of Administration: Oral
Substance Class Chemical
Record UNII
6WSK4828LL
Record Status Validated (UNII)
Record Version