25823-52-3
2,5,6,7-tetrahydro-3H-Benzo[6,7]cyclohepta[1,2-c]pyridazin-3-one
→
~97%
25823-53-4
3-chloro-6,7-dihydro-5H-benzo[2,3]cyclohepta[2,4-d]pyridazine