The story
- French · borrowed fromRU-486
- English todayRU-486
Roussel+UCLAF+486, from Usines Chimiques des Laboratoires Français. From French RU-486. From the codename RU-38486, the 38,486th compound synthesized by Roussel-Uclaf; then shortened to RU-486.
Etymology from Wiktionary, CC BY-SA 4.0.