9-(2-hydroxyethoxy)methyl-2-phenylamino-6-methylthiopurine
9-(2-hydroxyethoxy)methyl-2-phenylamino-6-thioxopurine
9-(2-hydroxyethoxy)methyl-2-phenylaminopurine
3-(2-acetoxyethoxy)methyl-5-benzoylamino-7-(N-benzoylthiocarbamoyl)iminoimidazo<4,5-d><1,3>thiazine
3-(2-acetoxyethoxy)methyl-5-phenylamino-7-(N-phenylthiocarbamoyl)iminoimidazo<4,5-d><1,3>thiazine