CHROMATOGRAPHIC BEHAVIOR OF BORNYL ACETATE DIASTEREOMERS UNDER THE CONDITIONS OF REVERSED-PHASE HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY (HPLC)

A Reversed Phase High Performance Liquid Chromatographic Method for Determination of Rapamycin

Easily degradating and various isomeric forms of rapamycin (Sirolimus) face the determination of this compound to many challenges. In this study, we developed and validated the isocratic reversed phase high performance liquid chromatographic (RP-HPLC) method for rapamycin. Separation was performed on a C8 column (MZ, 15 × 4.6 mm, 5 µm particle size) using methanol:water (80:20 v/v) as the mobil...

A Reversed Phase High Performance Liquid Chromatographic Method for Determination of Rapamycin

Easily degradating and various isomeric forms of rapamycin (Sirolimus) face the determination of this compound to many challenges. In this study, we developed and validated the isocratic reversed phase high performance liquid chromatographic (RP-HPLC) method for rapamycin. Separation was performed on a C8 column (MZ, 15 × 4.6 mm, 5 µm particle size) using methanol:water (80:20 v/v) as the mobil...

Reversed-phase high-performance liquid chromatography.

Peak fronting in reversed-phase high-performance liquid chromatography: a study of the chromatographic behavior of oxycodone hydrochloride.

Severe peak asymmetry--fronting--was observed for oxycodone during elution at 30 degrees C from a C18 HPLC column using a mobile phase consisting of 14.9% MeOH, 84.5% 0.05 M KH2PO4 (pH 3.0), 0.5% MTBE, and 0.1% TEA. Investigation using deuterium-labeled oxycodone and analysis by LC/MS showed that gem diol and hemiketal adducts of oxycodone formed as a result of the equilibrium addition of water...

Determination and Validation of Eflornithine Hydrochloride by (Rp-Hplc) Reversed Phase High Performance Liquid Chromatography

A simple highly sensitive, rapid, precise, accurate and specific RP-HPLC method was developed for quantification of eflornithine hydrochloride (2-difluoromethyl-DL-ornithine; DFMO) in its commercial formulation. In this RP-HPLC method, the separation was performed using BDS Hypersil 5μ C18 (150 X 4.6 mm) column at room temperature by using methanol: 2% of Glacial acetic acid in water (80:20 v/v...