M. Vasudevan et al., ION-pair liquid chromatography technique for the estimation of metformin in its multicomponent dosage forms, J PHARM B, 25(1), 2001, pp. 77-84
A simple, precise and accurate high performance liquid chromatography (HPLC
) method was developed for the simultaneous estimation of metformin with gl
iclazide and glipizide present in multicomponent dosage forms. The method w
as carried out on Inertsil(R) C-18 column. A mobile phase composed of aceto
nitrile water containing camphor sulphonic acid (adjusted to pH 7 using 0.1
N sodium hydroxide: 75 mM) at a flow rate of 1 ml min(-1) was used for the
separation. Detection was carried out at 225 nm. Tolbutamide was used as i
nternal standard. Validation of the developed HPLC method was carried out.
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