3964-81-6 5H-Benzo[5,6]cyclohepta[1,2-b]pyridine, 6,11-dihydro-11-(1-methyl-4-piperidinylidene)- Azatadine C07774 11-(1-methylpiperidin-4-ylidene)-6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridine 6,11-Dihydro-11-(1-methyl-4-piperidylidene)-5H-benzo(5,6)cyclohepta(1,2-b)pyridine Azatadina [INN-Spanish] Azatadinum [INN-Latin]