title: Kinetic approach to the development in beta-lactam antibiotics. I. Comparative stability of semisynthetic penicllins and 6-aminopenicillanic acid in aqueous solution.
mesh_terms: D004355:Drug Stability; D006868:Hydrolysis; D007700:Kinetics; D010397:Penicillanic Acid; D010406:Penicillins / Q000031:analogs & derivatives*
chemical_list: D010406:Penicillins; D010397:Penicillanic Acid