Reversed-Phase Ion-Pair Liquid Chromatography of a Pharmaceutical Compound and Its Photolytically Transformed Isomer
作者:
L.C. Hsu,
期刊:
Journal of Liquid Chromatography & Related Technologies
(Taylor Available online 1998)
卷期:
Volume 21,
issue 11
页码: 1685-1700
ISSN:1082-6076
年代: 1998
DOI:10.1080/10826079808001252
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Reversed-phase HPLC is usually the method of choice for compounds that dissolve in water/organic mixtures, even for samples that contain ionizable compounds. However, reversed-phase ion-pair chromatography (RP-IPC) is often a useful alternative for such samples, particularly if the components are highly basic or acidic. With this technique an aqueous/organic mobile phase is used along with a buffer and an ion-pairing reagent to provide more retention and higher selectivity than are afforded by the column and organic solvents alone. The retention effects of ammonium acetate, sodium acetate, potassium phosphate, and triethylamine (TEA) on a pharmaceutical compound (SK&F 108566) and its stereoisomer (SB 206328) were studied. Evidence indicated that SK&F 108566 and SB 206328 exhibited ion-pair formation with simple buffer systems and the ion-pair occurred in the mobile phase prior to the complex binding rapidly to the stationary phase.
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