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Details

Stereochemistry ABSOLUTE
Molecular Formula C20H24N2O2
Molecular Weight 324.4168
Optical Activity UNSPECIFIED
Defined Stereocenters 5 / 5
E/Z Centers 0
Charge 0

SHOW SMILES / InChI
Structure of QUININE

SMILES

[H][C@]1(C[C@@H]2CC[N@]1C[C@@H]2C=C)[C@H](O)C3=C4C=C(OC)C=CC4=NC=C3

InChI

InChIKey=LOUPRKONTZGTKE-WZBLMQSHSA-N
InChI=1S/C20H24N2O2/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/h3-6,8,11,13-14,19-20,23H,1,7,9-10,12H2,2H3/t13-,14-,19-,20+/m0/s1

HIDE SMILES / InChI

Molecular Formula C20H24N2O2
Molecular Weight 324.4168
Charge 0
Count
MOL RATIO 1 MOL RATIO (average)
Stereochemistry ABSOLUTE
Additional Stereochemistry No
Defined Stereocenters 4 / 4
E/Z Centers 0
Optical Activity UNSPECIFIED

Description

QUALAQUIN (quinine sulfate) is an antimalarial drug indicated only for treatment of uncomplicated Plasmodium falciparum malaria. It’s an alkaloid derived from the bark of the cinchona tree and is the active ingredient in extracts of the cinchona that have been used for that purpose since before 1633. Quinine sulfate has been shown to be effective in geographical regions where resistance to chloroquine has been documented. Quinine inhibits nucleic acid synthesis, protein synthesis, and glycolysis in Plasmodium falciparum and can bind with hemazoin in parasitized erythrocytes. However, the precise mechanism of the antimalarial activity of quinine sulfate is not completely understood. It is thought to act by inhibiting heme polymerase, thereby allowing accumulation of its cytotoxic substrate, heme. As a schizonticidal drug, it is less effective and more toxic than chloroquine. Quinine is FDA-approved. It is not considered safe and effective for the treatment or prevention of leg cramps-- an "off-label" (non-FDA-approved) use. Quinine is associated with serious and life-threatening adverse events, including: thrombocytopenia, hypersensitivity reactions, and QT prolongation. Thrombocytopenia associated with the use of quinine for the treatment or prevention of leg cramps includes: immune thrombocytopenic purpura, hemolytic uremic syndrome, thrombotic thrombocytepenic purpura with associated renal insufficiency.

Approval Year

Targets

Primary TargetPharmacologyConditionPotency

Conditions

ConditionModalityTargetsHighest PhaseProduct
Curative
QUALAQUIN

Cmax

ValueDoseCo-administeredAnalytePopulation
3.2 μg/mL
8.7 mg/kg single, oral
QUININE plasma
Homo sapiens

AUC

ValueDoseCo-administeredAnalytePopulation
28 μg × h/mL
8.7 mg/kg single, oral
QUININE plasma
Homo sapiens

T1/2

ValueDoseCo-administeredAnalytePopulation
12.5 h
8.7 mg/kg single, oral
QUININE plasma
Homo sapiens

Funbound

ValueDoseCo-administeredAnalytePopulation
8%
8.7 mg/kg single, oral
QUININE plasma
Homo sapiens

Doses

AEs

PubMed

Sample Use Guides

In Vivo Use Guide
in adults: 648 mg (two capsules) every 8 hours for 7 days
Route of Administration: Oral
In Vitro Use Guide
Quinine (0-100 uM) stimulates adipogenesis through ERK/S6 (extracellular-signal-regulated kinase/Ribosomal protein S6) signaling, which at least partly functions via taste receptor, type 2, member 106 (T2R106)
Substance Class Chemical
Record UNII
A7V27PHC7A
Record Status Validated (UNII)
Record Version