Clozapine belongs to which chemical class?

• A. Dibenzoxazepine
• B. Dibenzodiazepine
• C. Dibenzothiazepine
• D. Benzisoxazole

Answer: (B)

Clozapine is best described by its dibenzodiazepine core. This means the molecule has two benzene rings fused to a seven-membered diazepine ring that contains two nitrogen atoms. That specific arrangement—two nitrogens in the diazepine ring fused to benzene rings—defines the dibenzodiazepine class.

Other options imply different heteroatoms in the ring system (such as oxygen in a dibenzoxazepine, sulfur in a dibenzothiazepine, or a benzisoxazole fusion), which Clozapine’s structure does not have. So the dibenzodiazepine description accurately matches its actual ring structure.