Synonyms: Bis(2-methylisouronium) sulphate;carbamimidic acid methyl ester hemisulfate;O-METHYLISOUREA HEMISULFATE;O-METHYLISOUREA HEMISULFATE SALT;O-METHYLISOUREA SULFATE;O-METHYLISOUREA SULFATE (2:1);O-METHYLPSEUDOUREA SULFATE;OMI CAS No.: 52328-05-9 Molecular Formula: C4H14N4O6S Molecular weight: 246.24 EINECS No.: 257-851-8 Charateristics: Melting point: 163-167°C(lit.) Solubility: H2O: 0.1 g/mL, clear Solubleness: 1000 g/L (20 ºC) Appication: Fluorouracil for the synthesis of antitumor, anthelmintic imidazole and new herbicides.