- P-ISSN 1225-0163
- E-ISSN 2288-8985
Spectrophotometric assay for memantine HCl was developed by using sodium 1-(4-methoxypheyl) cinnamonitrile-2-sulfonate (MPCN) as an UV labelling reagent. The optimum derivatizing condition was obtained by incubation for 30 min at pH 5.0 in the presence of 20-fold molar excess of the labelling reagent. The absorbance of reaction product was measured at 324.5 nm and detection limit was <TEX>$0.43{\mu}g/ml$</TEX>. A linear range was <TEX>$5.0{\times}10^{-6}{\sim}6.5{\times}10^{-5}M$</TEX> of memantine HCl. The linear regression analysis of absorbance at various drug concentration was r