SEARCH Articles Figures Tables 4-Amino-2-methyl-5-hydroxymethyl pyrimidine diphosphate Pyrimidine 2 -methyl-4-amino-5-hydroxymethyl Pyrimidine 4- amino-5-cyano-2-methyl-, ring Pyrimidine amino Pyrimidine, 6-amino-4-hydrazino-2-methyl