Determination of furosine in biomedical samples employing an improved hydrolysis and high-performance liquid chromatographic technique

1991 ◽  
Vol 215 (1) ◽  
pp. 117-125 ◽  
Author(s):  
William T. Cefalu ◽  
Audrey Bell-Farrow ◽  
Zhong Q. Wang ◽  
Suresh Ralapati
Author(s):  
Zubaidur Rahman ◽  
Vijey Aanandhi M ◽  
Sumithra M

Objective: A simple, novel, sensitive, rapid high-performance liquid chromatographic (RP-HPLC) method has been developed and validated for quantitative determination of atomoxetine HCl (ATH) in bulk and formulations.Methods: The chromatographic development was carried out on RP-HPLC. The column used as Xterra RP 18 (250 mm × 4.6 mm, 5 μ particle size), with mobile phase consisting of methanol: water 80:20 V/V. The flow rate was 1.0 mL/min and the effluents were monitored at 270 nm.Results: The retention time was found to be 5.350 min. The method was validated as per International Conference on Harmonization Guideline with respect to linearity, accuracy, precision, and robustness. The calibration curve was found to be linear over a range of 2–10 μg/mL with a regression coefficient of 0.9999. The method has proved high sensitivity and specificity.Conclusion: The results of the study showed that the proposed RP-HPLC method was simple, rapid, precise and accurate which is useful for the routine determination of ATH in bulk drug and in its pharmaceutical dosage form.


2011 ◽  
Vol 20 (No. 3) ◽  
pp. 95-97
Author(s):  
A. Prošková ◽  
J. Kučera

An immobilized metal ion high-performance liquid chromatographic technique was developed for the determination of one of the egg allergens – ovomucoid – in egg white and food products containing egg white. The method was tested using standard samples as well as complete egg white and its reproducibility was determined. The possible application of this method is discussed. The method is based on the HPLC chromatography on the chelating column saturated with copper ions. The sample is applied to the column at pH 7.5 and eluted isocraticaly with a buffer containing 1.75 mM imidazole in the optimum case.  


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