title: Chemical aspect of penicillin allergy: imidazole-catalyzed isomerization of benzylpenicillin into benzylpenicillenic acid.
mesh_terms: D002384:Catalysis; D004342:Drug Hypersensitivity; D006863:Hydrogen-Ion Concentration; D007093:Imidazoles; D007536:Isomerism; D007700:Kinetics; D010397:Penicillanic Acid; D010400:Penicillin G; D010406:Penicillins; D013844:Thiazoles; D013997:Time Factors
chemical_list: D007093:Imidazoles; D010406:Penicillins; D013844:Thiazoles; D010397:Penicillanic Acid; D010400:Penicillin G