6-Amino-5-iodo-2(1H)-pyrimidinone1122-44-7100 % similar 5-Methylcytosine554-01-863 % similar 5-Bromocytosine2240-25-758 % similar 5-Methylcytosine hydrochloride58366-64-658 % similar Flucytosine2022-85-756 % similar 1,3-Dihydro-4-methyl-2H-imidazol-2-one1192-34-341 % similar 6-Amino-1,3,5-triazin-2(1H)-one931-86-239 % similar Cytosine71-30-738 % similar 5-Iodouracil696-07-134 % similar Toxopyrimidine73-67-633 % similar 2-Chloro-4,5-pyrimidinediamine14631-08-432 % similar 2-Chloro-5-fluoro-4-pyrimidinamine155-10-232 % similar Ammelide645-93-231 % similar