Sensitive Method for the Quantitative Determination of Ergotamine in Tablet Dosage Form by High-Performance Liquid Chromatography Using Bromocriptine as Internal Standard

2013 ◽  
Vol 3 (4) ◽  
pp. 286-298 ◽  
Author(s):  
Safwan Ashour
Author(s):  
Ramreddy Godela ◽  
Sherisha Bhavani

Objective: The most important objective of the present research work is to develop simple, specific, rapid, accurate, and sensitive reverse-phase high-performance liquid chromatography method and validated for the qualitative and quantitative determination of valsartan in its active pharmaceutical ingredient and tablet dosage form according to ICH guidelines.Proposed Method: An isocratic separation was done using Phenomenex C18 column possess 75×4.6 mm, 2.6 μ,100 A0 dimensions with mobile phase composition of water:acetonitrile (30:70% v/v) by maintaining 1 ml/minute flow rate and response detected at a wavelength of 247 nm.Results: The retention time of valsartan was found to be 2.71 minutes, limit of detection and limit of quantification were observed at 1.24 μg/ml and 3.6 μg/ml concentration, respectively, and a calibration curve was linear in the concentration range of 5-50 μg/ml with coefficient of correlation 0.99. The percentage recovery (accuracy) was in the range of 98.9-102%, and the % relative standard deviation was observed to be <2%.Conclusion: The proposed method was validated for accuracy, precision, sensitivity, linearity, and robustness and successfully employed for the quantitative determination of valsartan in tablet dosage form in quality control department of pharmaceutical industry.


2019 ◽  
Vol 3 ◽  
pp. 35-43
Author(s):  
Inna Kovalevska ◽  
Olena Ruban ◽  
Vadim Khanin

Aim. The purpose of our study was to develop a method for simultaneous quantitation of voglibose and quercetin in a solid dosage form. Materials and methods. The objects of the study were voglibose, quercetin, tablets containing voglibose - 0.2 mg and quercetin 100 mg. Measurements were carried out by high-performance liquid chromatography (HPLC) according to SPHU, supp. 1, 2.2.29, N, using the following equipment: a mass-selective detector Agilent 6530 Q-TOF was used as the detecting system. Results. According to the developed method, the quantitative determination of voglibose and quercetin in the tablets of hypoglycaemic action was investigated. The following results were obtained: the content of C 10 H 21 NO 7 (voglibose) in one dosage unit of the test drug was 0.2 mg; and the content of C 15 H 10 O 7 (quercetin) -0.105 g, which suggests the validability of the proposed method for quantitation of the active substances in tablets for the prevention and treatment of type II diabetes mellitus. Conclusions. In the course of the study, a method was developed for determination of voglibose and quercetin in a hypoglycaemic action preparation using high-performance liquid chromatography (HPLC) with a gradient mode of elution. It has been established that the chosen chromatographic conditions allow quantitative determination of the active pharmaceutical ingredients studied in a solid dosage form with a tolerance of ±5 %. Validation of the developed methodology has been conducted and its suitability for the simultaneous quantification of quercetin and voglibose in tablets has been demonstrated. The reproducibility of this method has been proved.


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