title: GLC assay of conjugated estrogen formulations.
abstract: A procedure is described for the enzyme hydrolysis and GLC assay of conjugated estrogens in commercial formulations. Resolution of up to nine of the components is achieved on a methyl phenyl cyanopropyl silicone-coated column using a dual-derivatization and dual-injection technique. Replicate results from analyses of a commercial tablet formulation yielded coefficients of variation between 1.0 and 17.2%, depending mainly on the quantity present; a coefficient of variation of 0.4% was obtained for the assay for total conjugated estrogens. Similar results were obtained with other commercial formulations.
mesh_terms: D002849:Chromatography, Gas; D004966:Estrogens, Conjugated (USP) / Q000032:analysis*; D006868:Hydrolysis; D007267:Injections; D008722:Methods; D013607:Tablets / Q000032:analysis
chemical_list: D004966:Estrogens, Conjugated (USP); D013607:Tablets