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Asian Journal of Research in Pharmaceutical Science
Year : 2016, Volume : 6, Issue : 3
First page : ( 191) Last page : ( 197)
Print ISSN : 2231-5640. Online ISSN : 2231-5659.
Article DOI : 10.5958/2231-5659.2016.00026.6

Development and Validation of A Stability-Indicating RP-HPLC Method for the Determination of Sitagliptin Phosphate and Simvastatin in the Presence of their Degradation Products in Bulk and Binary Mixture

Gayatri Lobhe A1,*, Amol Shah2, Indrajeet Singhvi3

1Department of Pharmaceutical Chemistry, VJSM's Vishal Institute of Pharmaceutical Education and Research, Ale, Pune-412411, (Maharashtra), India

2Sitabai Thite College of Pharmacy, Shirur, Pune-412210, (Maharashtra), India

3Pacific Academy of Higher Education and Research University, Udaipur-313024, (Rajasthan), India

*Corresponding Author E-mail: globhe@gmail.com

Online published on 18 October, 2016.

Abstract

A simple, selective, and precise stability-indicating reversed-phase liquid chromatographic method has been developed and validated for the determination of sitagliptin phosphate monohydrate (STG); and simvastatin (SIM) in the presence of acid and alkali degradation products of STG, and the hydrolytic degradation product of SIM. The method was based on gradient elution on a reversed phase C18 column (150 mm × 4.6 mm, 5 μm)— Cosmosil using a mobile phase consisting of acetonitrile and 10mM potassium dihydrogen orthophosphate (pH 3.0; 0.01M) (85: 15% v/v) and flow rate 1.0ml/min. Quantitation was achieved using UV detection at 225 nm for SIT and SIM and their degradation product was achieved. Linearity, accuracy, and precision were found tobe acceptable over the concentration ranges of 20–100 μg mL−1 and 0.4–20 μg mL−1 for STG and SIM, respectively. Limits of detection and quantitation for SIT were found to be 5.65 ng and 17.12 ng, respectively, while for SIM were found to be 2.72 ng and 8.25 ng, respectively. The proposed method was validated as per ICH guideline.

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Keywords

Reversed phase liquid chromatography, Sitagliptin, Simvastatin, Degradation products, Stability-indicating assay.

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