Abstract
DEVELOPMENT AND VALIDATION FOR THE QUANTITATIVE ESTIMATION OF LINAGLIPTIN BY RP-HPLC METHOD IN BULK FORM & MARKETED PHARMACEUTICAL DOSAGE FORM

Pragati Ranjan Satpathy*, Nilima Shukla, Madhuchhanda Mishra and Jyotirmayee Patra

ABSTRACT

A new, simple, rapid, precise, accurate and reproducible RP-HPLC method for estimation of Linagliptin in bulk form and marketed formulation. Separation of Linagliptin was successfully achieved on a Develosil ODS HG-5 RP C18, 5μm, 15cmx4.6mm i.d. column in an isocratic mode of separation utilizing Methanol : Phosphate buffer (0.02M, pH-3.6) in the ratio of 45:55% v/v at a flow rate of 1.0 mL/min and the detection was carried out at 255nm. The method was validated according to ICH guidelines for linearity, sensitivity, accuracy, precision, specificity and robustness. The response was found to be linear in the drug concentration range of 12-28mcg/mL for Linagliptin. The correlation coefficient was found to be 0.9995 for Linagliptin. The LOD and LOQ for Linagliptin were found to be 5.004μg/mL and 15.164μg/mL respectively. The proposed method was found to be good percentage recovery for Linagliptin, which indicates that the proposed method is highly accurate. The specificity of the method shows good correlation between retention times of standard solution with the sample solution. Therefore, the proposed method specifically determines the analyte in the sample without interference from excipients of pharmaceutical dosage forms.

Keywords: Linagliptin, RP-HPLC, Accuracy, Precision, Robustness, ICH Guidelines.


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