"Tracleer, Stayveer" . "Bosentan" . . . "endothelium receptor blockers" . . . . . . . "50.0" . . "XUL93R30K2" . . . . "51450" . "D01227" . . "D07538" . . . . "DB00559" . . . . "Bosentan" . . . . . . . . "147536-97-8" . . . "bosentan" . "957" . . "104865" . "a605001" .