The story
- Englishisobut(anol)
- Proto-Indo-European*swel-der.?
- Ancient Greekῡ̔́λη (hū́lē)
- Englishi(so)bu(tyl)
- Englishpro(pionic acid)
- Proto-Indo-European*bʰeh₂-
- Proto-Indo-European*bʰh₂nyéti
- Proto-Hellenic*pʰáňňō
- Ancient Greekφαίνω (phaínō)
- Frenchphéno-
- Ancient Greekῡ̔́λη (hū́lē)
- Frenchphényle
- Englishphen(yl)
- English todayibuprofen
From i(so)bu(tyl) + pro(pionic acid) + phen(yl).
Etymology from Wiktionary, CC BY-SA 4.0.