A stability indicating HPLC assay for diamorphine in aqueous solution
Barrett, David A. and Shaw, P.Nicholas (1994) A stability indicating HPLC assay for diamorphine in aqueous solution. Journal of Liquid Chromatography, 1717: 3727-3733.
A method is described for the rapid and simultaneous determination of diamorphine, and its hydrolysis products, 6-acetylmorphine and morphine using high-performance liquid chromatography. The column used was a Hypersil BDS C18 (100 x 4.6 mm) and the mobile phase comprised 80% aqueous potassium hydrogen phosphate (0.5 M), 20% acetonitrile, adjusted to pH 3.0 with orthophosphoric acid. The flow rate was 1.0 ml.min-1 and the limit of detection of each compound was 0.01 μg.ml-1. The assay was linear over the range of 0.01 to 100 μg.ml-1. The inter and intra-assay reproducibilities were better than 4% over this range of concentrations. The assay method was used to determine the effect of temperature on the degradation of diamorphine at pH 7.4 in aqueous solution.
A method is described for the rapid and simultaneous determination of diamorphine, and its hydrolysis products, 6-acetylmorphine and morphine using high-performance liquid chromatography. The column used was a Hypersil BDS C18 (100×4.6 mm) and the mobile phase comprised 80% aqueous potassium hydrogen phosphate (0.05M), 20% acetonitrile, adjusted to pH 3.0 with orthophosphoric acid. The flow rate was 1.0 ml.min-1 and the limit of detection of each compound was 0.01 μg.ml-1. The assay was linear over the range of 0.01 to 100 μg.ml-1. The inter and intra-assay reproducibilities were better than 4% over this range of concentrations. The assay method was used to determine the effect of temperature on the degradation of diamorphine at pH 7.4 in aqueous solution.