Wiktionary
antrafenine
n. A piperazine drug with analgesic and antiinflammatory properties.
Wikipedia
Antrafenine
Antrafenine (Stakane) is a phenylpiperazine derivative drug invented in 1979. It acts as an analgesic and anti-inflammatory drug with similar efficacy to naproxen, but is not widely used as it has largely been replaced by newer drugs.