98%min own factory professional research team laboratory ISO 9001 and 14001 Cas: 5193-84-0Molecular formula: C5H6N2O3Relative molecular mass: 142.1127InChI: InChI=1/C5H6N2O3/c1-10-3-4(8)6-2-7-5(3)9/h2H,1H3,(H2,6,7,8,9)Density: 1.468g/cm3Melting point: 341-345°CBoiling point: 336.4°C at 760 mmHgFlash point: 157.3°C Vapor pressure: 5.76E-05mmHg at 25°C 4,6-dihydroxy-5-methoxypyrimidine