Kinetic Studies of the Photochemical Decomposition of Alkannin/Shikonin Enantiomers

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概要

• 論文の詳細を見る

• The photodegradation of alkannin/shikonin (A/S) was studied as a function of solvent polarity, pH and ionic strength. This process follows an apparent first-order kinetic reaction. The photodegradation rate is inversely proportional to the solvent polarity in the order of chloroform > dichloromethane > 2-propanol > ethanol > methanol. The rate-pH profile reveals that A/S is more stable in an acidic condition : marginally subject to specific acid or base catalysis and is affected by two ionizable groups on the molecule. Ionic strength does not affect the photochemical decomposition rate at pH 5,9 or 12.

• 公益社団法人日本薬学会の論文
• 1996-01-15

著者

• Chen Fu-an

  Graduate Institute Of Pharmaceutical Sciences Taipei Medical College

• Wu An-bang

  Graduate Institute Of Pharmaceutical Sciences Taipei Medical College

• CHENG Hui-Wen

  Graduate Institute of Pharmaceutical Sciences, Taipei Medical College

• HSU Hsing-Chu

  Department of Pharmaceutics, Chia Nan Junior College of Pharmacy

• CHEN Chau-Yang

  Graduate Institute of Pharmaceutical Sciences, Taipei Medical College

• Cheng Hui-wen

  Graduate Institute Of Pharmaceutical Sciences Taipei Medical College

• Hsu Hsing-chu

  Department Of Pharmaceutics Chia Nan Junior College Of Pharmacy

• Chen Chau-yang

  Graduate Institute Of Pharmaceutical Sciences Taipei Medical College

関連論文

• Kinetic Studies of the Photochemical Decomposition of Alkannin/Shikonin Enantiomers
• Development of a liquid chromatographic method for bioanalytical applications with sildenafil

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