5-Pyrimidinecarboxylic acid, 2-(dimethylamino)-1,6-dihydro-6-oxo-
5-Pyrimidinecarboxylic acid, 2-(dimethylamino)-1,4-dihydro-4-oxo-
2-(Dimethylamino)-1,6-dihydro-6-oxo-5-pyrimidinecarboxylic acid
2-(Dimethylamino)-6-oxo-1,6-dihydropyrimidine-5-carboxylic acid
2-(Dimethylamino)-4-hydroxypyrimidine-5-carboxylic acid