Collaborative study of the colorimetric determination of progestational steroids in contraceptive tablets.
D003276:Contraceptives, Oral / Q000032:analysis; D004338:Drug Combinations; D005069:Evaluation Studies as Topic; D008525:Medroxyprogesterone / Q000032:analysis*; D008722:Methods; D009640:Norethindrone / Q000032:analysis*; D009641:Norethynodrel / Q000032:analysis*; D011786:Quality Control; D013053:Spectrophotometry; D013056:Spectrophotometry, Ultraviolet; D013607:Tablets
D003276:Contraceptives, Oral; D004338:Drug Combinations; D013607:Tablets; D009641:Norethynodrel; D008525:Medroxyprogesterone; D009640:Norethindrone