Wiktionary
brecanavir
n. A protease inhibitor proposed for the treatment of HIV but discontinued in 2006.
Wikipedia
Brecanavir
Brecanavir ( INN; codenamed GW640385) is a protease inhibitor which has been studied for the treatment of HIV.
On December 2006, its developer, GlaxoSmithKline discontinued further development because of insurmountable issues regarding formulation.