Development and validation of a liquid chromatographic method for estimation of dicyclomine hydrochloride, mefenamic acid and paracetamol in tablets
Indukaka Ipcowala College of Pharmacy, Beyond GIDC, P. B. No. 53, Vitthal Udyognagar 388 121, India
D A Shah Indukaka Ipcowala College of Pharmacy, Beyond GIDC, P. B. No. 53, Vitthal Udyognagar 388 121 India E‑mail: [email protected]
Liquid chromatographic method was developed for simultaneous quantitative determination of dicyclomine hydrochloride, mefenamic acid and paracetamol in their combined dosage form. The separation was achieved using a C 18 column (250×4.6 mm id, 5 μm) using acetonitrile:20 mM potassium dihydrogen phosphate 70:30 (v/v) adjusted to pH 4 using orthophosphoric acid as mobile phase at a flow rate of 1 ml/min and detection at 220 nm. Separation was completed within 12 min. The retention times of dicyclomine hydrochloride, mefenamic acid and paracetamol were 3.8, 9.3 and 2.5 minutes respectively. The proposed method was found to have linearity in concentration range of 10-100 μg/ml for dicyclomine hydrochloride, 0.05-10 μg/ml for mefenamic acid and 0.1−20 μg/ml for paracetamol. The developed method has been statistically validated and was found to be simple, precise, reproducible and accurate. The developed and validated method was successfully used for the quantitative analysis of commercially available dosage form.