ChEBI: Hydroxyfenbendazole is a member of the class of benzimidazoles that is fenbendazole in which the hydrogen at position 4 on the phenyl ring has been replaced by a hydroxy group. It has a role as a drug metabolite and a marine xenobiotic metabolite. It is a member of benzimidazoles, a carbamate ester, an aryl sulfide and a member of phenols. It is functionally related to a fenbendazole.