25381-40-2
1-chloropyrido[3,4d] pyridazine-4(3H)-one
→
~99%
87544-85-2
1-hydrazinyl-3H-pyrido[3,4-d]pyridazin-4-one
87544-84-1
1-aminopyrido(3,4-d)pyridazine-4(3H)-one
~65%