Monosodium Urate (Crystals) 2Mg. Monosodium Urate (Msu), Cas Number: 1198-77-2, Formula: C5H3N4Nao3, Molecular Weight: 190.09, Synonyms: 2,6,8-Trihydroxypurine, Sodium Acid Urate; Monosodium Urate; Msu, Appearance: Crystalline Solid, Storage : -20Degreec, Usage: For Research Use Only, Size: 2Mg