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Cytosine71-30-7100 % similar 2-Thiocytosine333-49-352 % similar 2-O-Methylcytosine3289-47-247 % similar 6-Amino-1,3,5-triazin-2(1H)-one931-86-243 % similar 5-Bromocytosine2240-25-739 % similar 5-Methylcytosine554-01-839 % similar 1,3-Dihydro-2H-imidazol-2-one5918-93-439 % similar 6-Amino-5-iodo-2(1H)-pyrimidinone1122-44-738 % similar Flucytosine2022-85-738 % similar N4-Benzoylcytosine26661-13-238 % similar 2,4-Diaminopyrimidine156-81-037 % similar 4-Aminopyrimidine591-54-837 % similar 5-Methylcytosine hydrochloride58366-64-636 % similar 1,3-Dihydro-4-methyl-2H-imidazol-2-one1192-34-335 % similar Ammelide645-93-234 % similar 3-Pyridazinamine5469-70-532 % similar 4-Hydroxy-2(1H)-pyridinone626-03-932 % similar 1H-Pyrrolo[2,3-b]pyridin-5-ol98549-88-331 % similar 2,6-Diaminopyridine141-86-631 % similar 2-Amino-4-hydroxyquinoline42712-64-131 % similar