Clinical data
AHFS/ International Drug Names
ATC code N02BB03 (WHO)
Pharmacokinetic data
Metabolism N-demethylation[1]
CAS Number 58-15-1 YesY
PubChem (CID) 6009
DrugBank DB01424 YesY
ChemSpider 5787 YesY
UNII 01704YP3MO YesY
KEGG D00556 YesY
ChEBI CHEBI:160246 YesY
Chemical and physical data
Formula C13H17N3O
Molar mass 231.29358
3D model (Jmol) Interactive image

Aminophenazone (or aminopyrine) is a pyrazolone with analgesic, anti-inflammatory, and antipyretic properties but has risk of agranulocytosis. A breath test with 13C-labeled aminopyrine has been used as a non-invasive measure of cytochrome P-450 metabolic activity in liver function tests.[1] It is also used in measuring the total body water in the human body system.[2]


  1. 1 2 Caubet, M. S.; Laplante, A.; Caillé, J.; Brazier, J. L. (4 Jan 2007). "[13C]Aminopyrine and [13C]Caffeine Breath Test: Influence of Gender, Cigarette Smoking and Oral Contraceptives Intake". Isotopes in Environmental and Health Studies. 38 (2): 71–77. doi:10.1080/10256010208033314.
  2. "Aminophenazone — Compound Summary". PubChem. The National Library of Medicine. 2005-03-26. Retrieved June 12, 2008.
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