1,6-Dihydro-6-((4-chlorophenyl)amino)-3-methyl-7H-pyrazolo(4,3-d)pyrimidin-7-one 6-((4-Chlorophenyl)amino)-3-methyl-1,6-dihydro-7H-pyrazolo(4,3-d)pyrimidin-7-one 7H-Pyrazolo(4,3-d)pyrimidin-7-one, 1,6-dihydro-6-((4-chlorophenyl)amino)-3-methyl- 86831-75-6