1-Aza-5H-dibenzo(a,d)cyclohepten-5-one, 10,11-dihydro-7-chloro- 10,11-Dihydro-7-chloro-5H-benzo(4,5)cyclohepta(1,2-b)pyridin-5-one 31721-92-3 5H-BENZO(4,5)CYCLOHEPTA(1,2-b)PYRIDIN-5-ONE, 10,11-DIHYDRO-7-CHLORO-