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In organic chemistry, benzoyl is the acyl of benzoic acid, with structure C6H5CO-. It should not be confused with benzyl, which is the radical or ion formed from the removal of one of the methyl hydrogens of toluene (methylbenzene). Whereas a benzyl substituent is commonly abbreviated "Bn", a benzoyl group is in contrast given the symbol "Bz".
Benzoyl-β-D-glucoside is a natural substance that can be found in Pteris ensiformis.