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Development and Validation of a Liquid Chromatographic Method for the Simultaneous Determination of Estradiol, Estriol, Estrone, and Progesterone in Pharmaceutical Preparations

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Progesterone and estrogens are hormones produced in the human body that are essential for regulating many vital functions. The three major estrogens produced by women are estriol, estradiol, and estrone. Progesterone is a naturally occurring hormone in both men and women. Pharmaceuticals containing estrogens alone or estrogens in combination with progesterone are commonly used in therapy. Patients requiring unique combinations of the drugs rely on pharmacies to compound the ingredients. In order to assess the potency of drugs containing combinations of estrogens and progesterone, a method was developed to determine all four ingredients simultaneously. The liquid chromatographic method utilized a Bondapak C18 column with an isocratic mobile phase of acetonitrilewater (50 + 50, v/v) at a flow rate of 1.0 mL/min and temperature of 30C. Under these conditions, the order of elution was estriol, estradiol, and estrone, followed by progesterone. UV detection was at 205 nm to monitor elution of the estrogens, then switched to 270 nm to monitor progesterone. The method was applied to the analysis of pharmacy-compounded drugs containing combinations of the hormones. Validation studies demonstrated that the method is accurate and precise.
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Document Type: Research Article

Affiliations: U.S. Food and Drug Administration, 158-15 Liberty Ave, Jamaica, NY 11433.

Publication date: 2009-05-28

More about this publication?
  • The Journal of AOAC INTERNATIONAL publishes refereed papers and reviews in the fields of chemical, biological and toxicological analytical chemistry for the purpose of showcasing the most precise, accurate and sensitive methods for analysis of foods, food additives, supplements and contaminants, cosmetics, drugs, toxins, hazardous substances, pesticides, feeds, fertilizers and the environment available at that point in time. The scope of the Journal includes unpublished original research describing new analytical methods, techniques and applications; improved approaches to sampling, both in the field and the laboratory; better methods of preparing samples for analysis; collaborative studies substantiating the performance of a given method; statistical techniques for evaluating data. The Journal will also publish other articles of general interest to its audience, e.g., technical communications; cautionary notes; comments on techniques, apparatus, and reagents.
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