SEARCH Articles Figures Tables 2-hydroxy pyrimidine 3- -2-hydroxy-4//-pyrido 3- -4//-pyrido pyrimidine 3- Chloro-2-hydroxy-4//-pyrido 3- chloro-2-hydroxy 3- pyrimidin-4-one Pyrido 4-ones Pyrimidine, 2-chloro Pyrimidine-4 -ones