Ampyrone is a metabolite of aminopyrine with analgesic, anti-inflammatory, and antipyretic properties. While the parent drug, aminopyrine, has been discouraged due to the risk of agranulocytosis, ampyrone itself has significantly lower toxicity.
The compounds of every Wikipedia article carrying a Chembox or a Drugbox, refreshed daily, with the values their infoboxes give. The pages need JavaScript; the API does not.