2,4 - dihydroxy-pyrimidine (CAS No.: 66-22-8) Synonyms: uracil English name :2,4-Dihydroxypyrimidine Molecular Formula: C4H4N2O2 Molecular Weight: 112.09 CAS No.: 66-22-8 Characters: white or light yellow needle crystal, soluble in water, slightly soluble in cold water, soluble in dilute ammonia, insoluble in ethanol and ether. 1. content (HPLC)> 99% 2 Loss on drying