title: Analysis of steroids. XXIV. A specific method for the spectrophotometric determination of 17-ethynyl steroids.
mesh_terms: D003276:Contraceptives, Oral / Q000032:analysis*; D004958:Estradiol / Q000032:analysis; D005040:Ethynodiol Diacetate / Q000032:analysis; D008656:Mestranol / Q000032:analysis; D008722:Methods; D013053:Spectrophotometry
chemical_list: D003276:Contraceptives, Oral; D004958:Estradiol; D005040:Ethynodiol Diacetate; D008656:Mestranol