Evaluation and authentication for metformin HCL, Glimepride, atorvastatine by using bulk HPLC pharmaceutical dosage form

Reverse phase chromatographic techniques are used for analyzing drugs. It is advanced analytical instrumentation method used for analysis of drugs. A novel accurate, precise, simple, & selective RP- HPLC technique is established and authorized for stability representing RP – HPLC technique for simultaneous assessment of Metformin HCL, Glimepiride & Atorvastatin in bulk & pharmaceutical dosage form by RP– HPLC technique. The technique on Luna C 18, 250mm × 4.6 mm, 15 µm. Column with a mobile phase comprising of buffer and acetonitrile in ratio of (85:15 v/v) and 1.0ml/ minflow rate. The detection is 258 nm. The retention time for metformin HCL, Atorvastatin & Glimepiride are discovered to be 3.266, 5.237 and 8.457 correspondingly. The technique authorized accordingly to ICH rules for precision, specificity, LOQ, LOD, accuracy, robustness, & linearity. The technique demonstrates best recovery &reproducibility with % RSD lower than 2. The suggested technique is discovered to be precise, simple, accurate, specific, &linear. The results are within the acceptance limits of lower than 2% signified that suggested technique has best reproducibility. The toughness of developed technique is validated by altering mobile phase composition, flow rate, and changing wavelength. The % RSD was found within the limits i.e., should not be more than 2.0.