Stability of the Panems SCH 29482 and FCE 22101 in Aqueous Solution
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概要
- 論文の詳細を見る
The catalytic effect of various buffer systems (citrates, acetates, phosphates, borates and carbonates) on the degradation of SCH 29482 and FCE 22101 in aqueous solution was studied at 35℃ and a constant ionic strength of 0.5 mol・dm^<-3> over a pH range of 3.50 to 10.0. The observed degradation rates, obtained by measuring the remaining intact antibiotic, were shown to follow pseudo-first-order kinetics with regard to antibiotic concentrations and to be significantly influenced by general acid and general base catalysis. The changes in the concentration of intact SCH 29482 in the solutions were established by spectrophotometric determination of the reaction product with imidazole, while those of intact FCE 22101 were determined by reverse-phase high performance liquid chromatography with ultraviolet-detection. Of the buffer systems employed in the kinetic studies the borate one had the greatest catalytic effect. The pH-rate profiles for SCH 29482 and FCE 22101 showed a degradation minimum at pH 5.86 and 5.22,respectively. The SCH 29482 is more reactive with hydrogen ion than the FCE 22101 and less reactive with hydroxide ion. The Arrhenius activation energies were determined for SCH 29482 and FCE 22101 at pHs 4.23,6.59 and 8.60.
- 社団法人日本薬学会の論文
- 1992-08-25
著者
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Me´ndez R
Univ. Leo´n Leo´n Esp
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MENDEZ Rosa
Departamento de Bioquimica y Biologia Molecular, Facultades de Biologia y Veterinaria, Universidad d
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ALEMANY Teresa
Departamento de Bioquimica y Biologia Molecular, Facultades de Biologia y Veterinaria, Universidad d
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MARTIN-VILLACORTA Javier
Departamento de Bioquimica y Biologia Molecular, Facultades de Biologia y Veterinaria, Universidad d
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Marti´n‐villacorta J
Univ. Leo´n Leo´n Esp
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Alemany T
Univ. Leo´n Leo´n Esp
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Alemany Teresa
Departamento De Bioquimica Y Biologia Molecular Facultades De Biologia Y Veterinaria Universidad De
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Martin-villacorta Javier
Departamento De Bioquimica Y Biologia Molecular Facultades De Biologia Y Veterinaria Universidad De
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Mendez Rosa
Departamento De Bioquimica Y Biologia Molecular Facultades De Biologia Y Veterinaria Universidad De
関連論文
- Catalysis of Hydrolysis and Aminolysis of Non-classical β-Lactam Antibiotics by Metal Ions and Metal Chelates
- Stability of the Panems SCH 29482 and FCE 22101 in Aqueous Solution
- Catalytic Effect of Buffers on Degradation of Imipenem (N-Formimidoylthienamycin) in Aqueous Solution
- Stability in Aqueous Solution of Two Monocyclic β-Lactam Antibiotices : Aztreonam and Nocardicin A