.alpha.-Chlorobenzaldehyde phenylhydrazone 15424-14-3 Benzenecarbohydrazonoyl chloride, N-phenyl- Benzoyl chloride, phenylhydrazone N'-Phenylbenzohydrazonoyl chloride N-Phenylbenzenecarbohydrazonoyl chloride N-Phenylbenzhydrazidoyl chloride NSC77407