The present invention pertains to 4-(4-methylpiperazin-1-ylmethyl)-N-[4-methyl-3-(4-pyridin-3-yl)pyrimidin-2-ylamino)phenyl]-benzamide or a pharmaceutically acceptable salt thereof, or 4-methyl-3-[[4-(3-pyridinyl)-2-pyrimidinyl]amino]-N-[5-(4-methyl-1H-imidazol-1-yl)-3-(trifluoromethyl)phenyl] benzamide or a pharmaceutically acceptable salt thereof, for the treatment of disorders mediated by alpha-carbonic anhydrase isoforms selected from intraocular hypertension (glaucoma), epilepsy, Lennox-Gastaut syndrome, altitude sickness, headaches, neurological disorders and obesity.