Benzaldehyde oxime is an organic compound with the formula C<sub>7</sub>H<sub>7</sub>NO. Benzaldehyde oxime can be synthesized from benzaldehyde and hydroxylamine hydrochloride in presence of a base. The reaction at room temperature in methanol gives 9% E-isomer and 82% Z-isomer.
Benzaldehyde oxime undergoes Beckmann rearrangement to form benzamide, catalyzed by nickel salts or photocatalyzed by BODIPY. Its dehydration yields benzonitrile. It can be hydrolyzed to regenerate benzaldehyde.
It reacts with N-chlorosuccinimide in DMF to form benzohydroximoyl chloride, in which chlorine replaces hydrogen on the carbon attached to the nitrogen in benzaldehyde oxime.