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

Details

Stereochemistry ACHIRAL
Molecular Formula C13H16N3O4S.Na
Molecular Weight 333.339
Optical Activity NONE
Defined Stereocenters 0 / 0
E/Z Centers 0
Charge 0

SHOW SMILES / InChI
Structure of METAMIZOLE SODIUM

SMILES

[Na+].CN(CS([O-])(=O)=O)C1=C(C)N(C)N(C1=O)C2=CC=CC=C2

InChI

InChIKey=DJGAAPFSPWAYTJ-UHFFFAOYSA-M
InChI=1S/C13H17N3O4S.Na/c1-10-12(14(2)9-21(18,19)20)13(17)16(15(10)3)11-7-5-4-6-8-11;/h4-8H,9H2,1-3H3,(H,18,19,20);/q;+1/p-1

HIDE SMILES / InChI

Molecular Formula Na
Molecular Weight 22.9898
Charge 1
Count
MOL RATIO 1 MOL RATIO (average)
Stereochemistry ACHIRAL
Additional Stereochemistry No
Defined Stereocenters 0 / 0
E/Z Centers 0
Optical Activity NONE

Molecular Formula C13H16N3O4S
Molecular Weight 310.349
Charge -1
Count
MOL RATIO 1 MOL RATIO (average)
Stereochemistry ACHIRAL
Additional Stereochemistry No
Defined Stereocenters 0 / 0
E/Z Centers 0
Optical Activity NONE

Description

Dipyrone, also known as Metamizole (INN), is an ampyrone sulfonate analgesic, antispasmodic and antipyretic. It was withdrawn from US market in 1977 on the basis of reports of agranulocytosis. Depyrone is still used to treat severe and diffucult for relieving pains of different origin; headache, tooth-ache, pains in the joints, muscles, following traumas and operations, gall and kidney colics, neurites, neuralgias, traumatic cerebrasthenia; inflammation of upper respiratory ways of microbial or virus origin; chorea; febrile states. Mechanism of action of dipyrone is complex. It is believed that dipyrone exerts its action by inhibiting COX-3, and activates opioid and cannabioid systems either itself, or by products of its metabolic degradation.

CNS Activity

Originator

Approval Year

Targets

Primary TargetPharmacologyConditionPotency

Conditions

ConditionModalityTargetsHighest PhaseProduct
Primary
NEURALGIN
Primary
OPTALGIN

PubMed

Sample Use Guides

In Vivo Use Guide
Dipyrone was administered orally, as subcutaneous and intramuscular injections (daily dose 0.25-1 g as 50% solution), or by intravenous injection.
Route of Administration: Other
In Vitro Use Guide
Cyclooxygenase activity was measured by the formation of PGE2 after exposure to exogenous 30 μM acid for 10 min. Dipyrone inhibited COX-1 with IC50 350 uM, and COX-3 with IC50 of 52 uM.
Substance Class Chemical
Record UNII
VSU62Z74ON
Record Status Validated (UNII)
Record Version