title: Determination of 21-hydroxy corticosteroids in pharmaceutical preparations using the 4,5-dimethyl-o-phenylene diamine method.
mesh_terms: D006889:Hydroxycorticosteroids / Q000032:analysis*; D008722:Methods; D009824:Ointments / Q000032:analysis; D010655:Phenylenediamines; D013607:Tablets / Q000032:analysis
chemical_list: D006889:Hydroxycorticosteroids; D009824:Ointments; D010655:Phenylenediamines; D013607:Tablets