6 beta-Halopenicillanic acids, a group of beta-lactamase inhibitors.
D010397:Penicillanic Acid / Q000138:chemical synthesis / Q000302:isolation & purification* / Q000494:pharmacology; D065093:beta-Lactamase Inhibitors
D065093:beta-Lactamase Inhibitors; D010397:Penicillanic Acid