189747-31-7

6-Chloropyrimido[5,4-d]pyrimidin-4(3H)-one 6-chloro-1h-pyrimido[5,4-d]pyrimidin-4-one 2-Chloro-7H-pyrimido[5,4-d]pyrimidin-8-one Pyrimido[5,4-d]pyrimidin-4(3H)-one, 6-chloro- 6-chloro-3H,4H-pyriMido[5,4-d][1,3]diazin-4-one