DEVELOPMENT AND VALIDATION OF RP-HPLC METHOD FOR SIMULTANEOUS ESTIMATION OF CLIDINIUM BROMIDE, CHLORDIAZEPOXIDE AND DICYCLOMINE HYDROCHLORIDE IN TABLET DOSAGE FORM.

A simple, specific, accurate reversed phase high performance liquid chromatographic method was developed for the simultaneous estimation of clidinium bromide, chlordiazepoxide and dicyclomine hydrochloride. Chromatographic separation of the three drugs was performed on a Chromatopak C-18 column (25 cm x 4.6 i.d. x 5µm) as the stationary phase with a mobile phase composed of 0.1 % triethylamine in water pH adjusted by 5 % o-phosphoric acid and acetonitrile in the ratio 30:70 at a flow rate of 0.8mL/min, Detection was carried out at 210 nm. The retention times of clidinium bromide, chlordiazepoxide and, dicyclomine hydrochloride were found to be 3.9 min, 5.4 min, and 6.8 min, respectively. The proposed method was validated for linearity, accuracy, precision, LOD and LOQ. [ABSTRACT FROM AUTHOR]