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Reversed-phase liquid chromatographic determination of tramiprosate in rat plasma using evaporative light scattering
R Nageswara Rao1, Pawan K Maurya, Dhananjay D Shinde
1HPLC/UV Group, Analytical Chemistry Division, Discovery Laboratory, Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500607, India. rnrao@iict.res.in
Abstract:
A simple and reliable method was developed for determining blood concentrations of tramiprosate using reversed-phase HPLC with evaporative light scattering detection. The optimum evaporator and nebulizer temperatures for ELSD were set at 90 and 60°C respectively. The method was linear for a concentration range of 10-1000 µg/mL when 0.3 mL blood was used. The intra-assay precision ranged from 1.84 to 5.24%, and the coefficient of variation (CV) for a quality control sample at 10 µg/mL was 5.24% with a bias of -9.50% from the target value. The inter-assay precision ranged from 2.58 to 5.96%, and the CV for a quality control sample at 10 µg/mL was 5.96% with a bias of -7.50% from the target value. The method described here is suitable for management of tramiprosate in Alzheimer disease therapy.
