A simple and accurate method was developed for the analysis of
carbinoxamine maleate, dextromethorphan hydrobromide and
pseudoephedrine hydrochloride content in pure form and pharmaceutical
preparations using HPLC. Analysis was conducted on a sili
ca column (6 μm)
with mobile phase consisting of ethanol – ammonium acetate (0.05 M) in rate
[85:15] respectively, and at detection wavelength of 276 nmand flow rate 1ml/ min.
Results were linear (correlation coefficient R > 0.9996) in the range of the
studied concentrations for the active materials. The relative standard
deviations (n=6) of intra and interday assay were 0.931%, 1.527% for
carbinoxamine maleate and 0.717%, 1.058 % for dextromethorphan
hydrobromide and 0.309%, 0.891% for pseudoephedrine hydrochloride,
respectively. This method, proved to be easy, precise and economical, is useful
for quality control of pharmaceutical drugs industrial samples.
