Ecofriendly HPLC Method for Simultaneous Determination of the Co-Prescribed Drugs in Chemotherapy Omeprazole, Ondansetron and Deflazacort in Spiked Human Plasma

Green, selective and accurate high-performance liquid chromatography (HPLC) chromatographic method is presented for simultaneous separation and quantitation of the co-prescribed drugs in chemotherapy omeprazole, ondansetron and deflazacort in spiked human plasma. An isocratic HPLC separation was performed on X Bridge C18 (4.6 × 250 mm) column with 5 μm particle size using mobile phase consisting of methanol: ammonium acetate buffer pH 4 adjusted by acetic acid (60: 40, v/v). The injection volume was 20μL with UV detection wavelength at 237 nm at room temperature. Flow rate of the mobile phase was adjusted to be 2.0 ml/min. Dexamethasone was used as internal standard to correct the variation during sample pretreatment. FDA guidelines were followed to validate the developed method. Successful application of the developed method was revealed by simultaneous determination of omeprazole, ondansetron and deflazacort in spiked human plasma in ranges of 1-20, 0.1-8 and 0.2-8 μg mL-1 for omeprazole, ondansetron and deflazacort, respectively. Four greenness assessment tools were used to evaluate the greenness of the developed method and the results were accepted. This method permitted the accurate simultaneous determination of the studied drugs, thus it can be used during therapeutic drug monitoring in daily clinical practice.

A review on analytical methods with special reference to electroanalytical methods for the determination of some anticancer drugs in pharmaceutical and biological samples

It is widely accepted that cancer, the second leading cause of death, is a morbidity with big impacts on the global health. In the last few years, chemo-therapeutic treatment continually induces alone most lengthy consequents, which is extremely harmful for the physiological and psychological health of the patients. In the present research, we discuss the recent techniques for employed for extraction, and quantitative determination of such compounds in pharmaceutical, and biological specimens. In the frame of this information, this review aims to provide basic principles of chromatography, spectroscopy, and electroanalytical methods for the analysis of anticancer drugs published in the last three years. The review also describes the recent developments regarding enhancing the limit of detection (LOD), the linear dynamic range, and so forth. The results show that the LOD for the chromatographic techniques with the UV detector was obtained equaled over the range 2.0 ng mL^-1-0.2 μg mL^-1, whereas the LOD values for analysis by chromatographic technique with the mass spectrometry (MS) detector was found between 10.0 pg mL^-1-0.002 μg mL^-1. The biological fluids could be directly injected to capillary electrophoresis (CE) in cases where the medicine concentration is at the contents greater than mg L^-1 or g L^-1. Additionally, electrochemical detection of the anticancer drugs has been mainly conducted by the voltammetry techniques with diverse modified electrodes, and lower LODs were estimated between 3.0 ng mL^-1-0.3 μg mL^-1. It is safe to say that the analyses of anticancer drugs can be achieved by employing a plethora of techniques such as electroanalytical, spectroscopy, and chromatography techniques.