کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1224723 | 967930 | 2006 | 6 صفحه PDF | دانلود رایگان |
A stability indicating, reversed-phase high performance liquid chromatographic method was developed for the quantification of Apomine, tetraisopropyl 2-(3,5-di-tert-butyl-4-hydroxyphenyl)-ethyl-1, 1-bisphosphonate, in a topical cream formulation. Analysis of Apomine in the cream formulation was performed through a dilution of the cream base with tetrahydrofuran. This allowed the current method to bypass extraction and/or centrifugation for direct injection and analysis. Separation was achieved using an Alltima C18 5 μm, 150 mm × 2.1 mm column and employed a gradient procedure, beginning with acetonitrile–water (65:35, v/v), at 0.6 mL/min for 9 min, followed by a rinse with isopropyl alcohol for 9 min. The complete gradient method has been optimized to separate Apomine from the nonpolar cream components, wash and equilibrate the column in a 30-min assay. This report demonstrates that this method is effective for quantification of Apomine in a cream formulation.
Journal: Journal of Pharmaceutical and Biomedical Analysis - Volume 40, Issue 4, 3 March 2006, Pages 975–980