38953-40-1 4(1H)-Pyrimidinone, 6-amino-2-methyl-5-(sulfooxy)- 4-Amino-6-oxo-2-methyl-5-pyrimidyl hydrogen sulfate 6-Amino-2-methyl-5-(sulphooxy)-1H-pyrimidin-4-one EINECS 254-217-2 NSC 517922