title: Preparation of deuterium and tritium labelled norethynodrel, norethindrone, and 6-methyleneandrostenedione.
authors.forename: H L
authors.initials: HL
authors.lastname: Holland
authors.forename: F M
authors.initials: FM
authors.lastname: Brown
authors.forename: L
authors.initials: L
authors.lastname: Tan
mesh_terms: D001695:Biology; D019411:Clinical Laboratory Techniques; D003267:Contraception; D003270:Contraceptive Agents; D003271:Contraceptive Agents, Female; D003933:Diagnosis; D005193:Family Planning Services; D008660:Metabolism; D009640:Norethindrone; D009641:Norethynodrel; D010827:Physiology; D012106:Research; D012107:Research Design
chemical_list: D003270:Contraceptive Agents; D003271:Contraceptive Agents, Female; D009641:Norethynodrel; D009640:Norethindrone
keywords: Biology; Contraception; Contraceptive Agents, Female--pharmacodynamics; Contraceptive Agents, Progestin--pharmacodynamics; Contraceptive Agents--pharmacodynamics; Examinations And Diagnoses; Family Planning; Laboratory Examinations And Diagnoses; Laboratory Procedures; Measurement; Metabolic Effects; Norethindrone--pharmacodynamics; Norethynodrel--pharmacodynamics; Physiology; Research Methodology