p. 2721 - 2723
(2003)p. 255 - 258
(2007/10/03)(2008/06/13)
1-Methyl-2-dimethylamino-4-amino-5-nitroso-pyrimidin-6-on
4,5-diamino-1,6-dihydro-1-methyl-2-methylthiopyrimidin-6-one
4,6-dimethyl[1,2,5]oxadiazolo[3,4-d]pyrimidine-5,7(4H,6H)-dione
1,3,6-trimethyl-7-(methylthio)pyrimido<5,4-g>pteridine-2,4,5-(1H,3H,6H)-trione 10-oxide
6-methyl-5-(methylthio)furazano<3,4-d>pyrimidin-7(6H)-one