221246-12-4 2H-1,2-Benzothiazine-3-carboxylic acid, 4-(7-ethyl-1,3-benzodioxol-5-yl)-2-(2-(trifluoromethyl)phenyl)-, 1,1-dioxide, potassium salt CI-1034 Fandosentan potassium Fandosentan potassium [USAN] PD 180988 PD 180988-0016 Potassium 4-(7-ethyl-1,3-benzodioxol-5-yl)-2-(2-(trifluoromethyl)phenyl)-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide