title: A new colorimetric method for the determination of 6-aminopenicillanic acid.
mesh_terms: D003124:Colorimetry / Q000379:methods*; D004355:Drug Stability; D009994:Osmolar Concentration; D010397:Penicillanic Acid / Q000032:analysis* / Q000031:analogs & derivatives; D010405:Penicillinase / Q000494:pharmacology; D013997:Time Factors
chemical_list: D010397:Penicillanic Acid; D010405:Penicillinase; C004408:aminopenicillanic acid