Product name: 4,6-dihydroxypyrimidine CAS RN: 1193-24-4 EINECS Number: 214-772-3 Molecular formula: C4H4N2O2 Molecular weight: 112.0868 Physical and chemical properties: Appearance and properties: light yellow to yellow powder Melting point: >300℃(lit.) Boiling point: 358.5ºC at 760 mmHg Water solubility: 2.5 g/L (20ºC) Packaging: 25kg/cardboard drum Uses: it is used as an intermediate in organic synthesis in the pharmaceutical industry to produce sulfa drug sulfamotoxine. 4,6-Dihydroxypyrimidine is also an intermediate of vitamin B4, antitumor drugs and adjuvant drugs. Production methods: It is derived from diethyl malonate (or dibutyl malonate) and formamide through cyclization.