TITLE:
Development and Validation of a Method for Simultaneous Determination of Metformin and Saxagliptin in a Formulation by RP-HPLC
AUTHORS:
P. B. N. Prasad, K. Satyanaryana, G. Krishnamohan
KEYWORDS:
Metformin, Saxagliptin, Simultaneous Analysis, RP-HPLC, Stress Induced Degradation
JOURNAL NAME:
American Journal of Analytical Chemistry,
Vol.6 No.11,
October
14,
2015
ABSTRACT: A simple, specific,
sensitive, precise and accurate reverse phase high performance liquid chromatographic
method (RP-HPLC) was developed for the simultaneous analysis of Metformin and
Saxagliptin in active pharmaceutical ingredients (APIs) as well as in marketed
tablet (combination) dosage forms. The method was achieved on Enable C18 G (250 × 4.6 mm; 5 μm particle size) column using 0.05 M KH2PO4 buffer (pH 4.5):Methanol:Acetonitrile (60:20:20 %v/v) as a mobile phase at a
flow rate of 0.6 mL/min and by employing UV detection at 220 nm wavelength. The
retention time of Metformin and Saxagliptin were found to be 4.38 min and 6.92
min, respectively. The method was validated as per ICH guidelines. The limit of detection (LOD) and limit of
quantification (LOQ) of Metformin were found to be 0.112 μg/mL and 0.373 μg/mL,
respectively, while those of Saxagliptin were found to be 0.029 μg/mL and
0.096 μg/mL, respectively. The method was found to be
rapid, sensitive, linear, specific, accurate, precise and economic for the
quality control and stability assays of Metformin and Saxagliptin in marketed
tablet dosage forms.