Journal
ENVIRONMENTAL CHEMISTRY LETTERS
Volume 8, Issue 2, Pages 185-191Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s10311-009-0207-0
Keywords
Statins; Lipid regulators; Simvastatin; Lovastatin; Pravastatin
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In this study, stability of statin drugs in different conditions, such as various pH, diverse solvents ratio, presence of UV, and sunlight have been investigated. Results suggest strong dependence of statins upon pH, potential environmental persistence towards sun light, and UV light degradation via singlet excited state obtained by excitation into the pi-pi* band. In acidic conditions interconversion between lactone and hydroxy acid forms in aqueous solutions at room temperature is retarded, while for the same sun-exposed samples are accelerated. Longer exposures lead to the degradation processes. Statin interconversion in water is much lower than in acetonitrile.
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