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Details

Stereochemistry ABSOLUTE
Molecular Formula C20H26N2O2.ClH
Molecular Weight 362.894
Optical Activity UNSPECIFIED
Defined Stereocenters 5 / 5
E/Z Centers 0
Charge 0

SHOW SMILES / InChI
Structure of HYDROQUINIDINE HYDROCHLORIDE

SMILES

Cl.[H][C@@]1(C[C@@H]2CC[N@]1C[C@@H]2CC)[C@@H](O)C3=CC=NC4=CC=C(OC)C=C34

InChI

InChIKey=MULXTQKDWYBJMO-VJAUXQICSA-N
InChI=1S/C20H26N2O2.ClH/c1-3-13-12-22-9-7-14(13)10-19(22)20(23)16-6-8-21-18-5-4-15(24-2)11-17(16)18;/h4-6,8,11,13-14,19-20,23H,3,7,9-10,12H2,1-2H3;1H/t13-,14-,19+,20-;/m0./s1

HIDE SMILES / InChI

Description

Hydroquinidine is a pharmaceutical agent that acts as a class I antiarrhythmic agent (Ia) in the heart. Hydroquinidine is a d-rotatory alkaloid derived from cinchiona bark. It is closely related to quinidine, differing from the latter alkaloid only in containing two more atoms of hydrogen in the molecule. The drug causes increased action potential duration, as well as a prolonged QT interval. It is not approved by FDA, but marketed in Spain, France, Italy and Pakistan under the brand names Lentoquine, Sérécor LP, Idrochinidina Lirca and Austacute, respectively. Like all other class I antiarrhythmic agents, Hydroquinidine primarily works by blocking the fast inward sodium current (INa). Hydroquinidine is also used for the treatment of Malaria.

Originator

Approval Year

Targets

Primary TargetPharmacologyConditionPotency
32.0 nM [IC50]

Conditions

ConditionModalityTargetsHighest PhaseProduct
Primary
Lentoquine
Curative
Unknown

Cmax

ValueDoseCo-administeredAnalytePopulation
0.74 mg/L
300 mg single, oral
HYDROQUINIDINE unknown
Homo sapiens
0.55 mg/L
500 mg single, oral
HYDROQUINIDINE unknown
Homo sapiens

T1/2

ValueDoseCo-administeredAnalytePopulation
10.8 h
300 mg single, intravenous
HYDROQUINIDINE unknown
Homo sapiens

Doses

AEs

Overview

CYP3A4CYP2C9CYP2D6hERG


OverviewOther

Other InhibitorOther SubstrateOther Inducer



Drug as perpetrator​

Drug as victim

PubMed

Sample Use Guides

In Vivo Use Guide
500 mg/12 h mg daily
Route of Administration: Oral
In Vitro Use Guide
Halfmaximal inhibition of IK(f) at o mV occurred with 23 + 7.8uM hydroquinidine