8-methyl-6-phenylmethoxy-7H-purin-2-amine

N-(2-amino-5-nitroso-6-phenylmethoxypyrimidin-4-yl)acetamide

7-methoxypterin

2-amino-7-methylsulfanyl-1H-pteridin-4-one

2-amino-7-propan-2-yloxy-1H-pteridin-4-one