HPLC Analysis of Gemfibrozil and Ibuprofen Using Mixed-Mode Chromatography

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HPLC Analysis of Gemfibrozil and Ibuprofen Using Mixed-Mode Chromatography

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HPLC Analysis of Gemfibrozil and Ibuprofen Using Mixed-Mode Chromatography'>

Application Notes:

Gemfibrozil is used to lower cholesterol and triglyceride levels in the blood and Ibuprofen is a common over-the-counter painkiller. Fast separations of these two compounds are obtained on short 50 mm columns. Both Primesep B2 and Primesep D separate by a combination of anion exchange and reversed phase. Retention times on Primesep B2 can be adjusted by changing the percentage of acetonitrile. On Primesep D retention times can be changed by adjusting the percentage of acetonitrile and acetic acid in the mobile phase. The HPLC separations use a mobile phase of water, acetonitrile (MeCN, ACN), ammonium formate and acetic acid (HOAc) with UV detection at 270 nm.

Application Columns:

Primesep^® B2 is a mixed-mode HPLC column with general hydrophobic and ion-exchange properties. The Primesep B2 stationary phase combines a hydrophobic chain and a basic functional group as an anion exchanger. Acids, bases, zwitterions and neutrals can be retained and separated by Primesep B2 columns. Primesep B2 also separates bases by an ion-exclusion mechanism. Primesep B2 demonstrates significant improvement in retention and selectivity for the separation of weak acid analytes by a combination of reversed phase and anion exchange. In this case the basic functional group acts as an embedded ion-pairing reagent. Primesep B2 column is one of the best separation media for natural product extracts. Methods can be developed on Primesep Columns that are fully compatible with detectors such as UV, RI, conductivity, fluorescence, evaporative light scattering (ELSD) as well as mass spectrometers (LC/MS) and preparative chromatography (prep HPLC) systems.
Primesep^® D is a reversed-phase HPLC column with general hydrophobic and ion-exchange properties for direct injection of plasma samples. The Primesep D stationary phase combines a hydrophobic chain and a basic functional group as an anion exchanger. Primesep D excludes high molecular weight plasma compounds while retaining hydrophobic and acidic small molecules. Methods can be developed on Primesep Columns that are fully compatible with detectors such as UV, RI, conductivity, fluorescence, evaporative light scattering (ELSD) as well as mass spectrometers (LC/MS) and preparative chromatography (prep HPLC) systems.

Application Analytes:

Gemfibrozil
Ibuprofen

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