Losartan potassium 50MG. Losartan potassium, CAS: 124750-99-8, MF: C22H22ClKN6O, Purity: greater than or equal to 99% Appearance: Off-white solid, Synonym: 2-Butyl-4-chloro-1-{[2GC|-(1H-tetrazol-5-yl)(1, 1GC|-biphenyl)-4-yl]methyl}-1H-imidazole-5-methanol, potassium salt (DUP-753) MK-954, Size: 50MG