p. 9971 - 9978
(1996)6-Amino-1,3-dimethylbarbituric acid
5-[1-Dimethylamino-meth-(E)-ylidene]-6-imino-1,3-dimethyl-dihydro-pyrimidine-2,4-dione
6-amino-1,3-dimethyl-5-[(phenylimino)methyl]uracil
(E)-6-amino-1,3-dimethyl-5-((2-phenylhydrazono)methyl)pyrimidine-2,4(1H,3H)dione
7-amino-1,3-dimethylpyrido<2,3-d>pyrimidine-2,4(1H,3H)-dione
7-amino-6-cyano-1,3-dimethylpyrido<2,3-d>pyrimidine-2,4(1H,3H)-dione
1,3,7-trimethylpyrido<2,3-d>pyrimidine-2,4(1H,3H)-dione