Central Drugs Testing Laboratory;
Hyderabad;
India;
Department of Pharmacy;
JNTUH;
Hyderabad;
India;
NATCO Pharma R&D;
Hyderabad;
India;
Sitagliptin; Phosphate; Metformin; Hydrochloride; Reverse; Phase; High; Performance; Liquid; Chromatography; (RPHPLC); International; Committee; on; Harmonization; (ICH); Guidelines; Limit; of; Detection; (LOD); Limit; of; Quantitation; (LOQ); Linearity; Precision; Accuracy; Reproducibility;