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Prohormones such as dehydroepiandrosterone (DHEA) are steroid precursors that do not show hormonal activity by themselves. Abuse… Expand Recent studies showed that non-hormonal supplements such as vitamins, minerals and amino acids can contain anabolic androgenic… Expand The purpose of this study was to determine the effects of norsteroid supplementation (224 mg of 19-nor-4-androstene-3,17-dione… Expand A method is described for the determination of anabolic steroids including testosterone, 19-nor-4-androstene-3,17-dione, 4… Expand Abstract. The purpose of this study was to determine the effects of 8 weeks of norsteroid supplementation on body composition and… Expand CONTEXT
Several anabolic steroids are sold over-the-counter (OTC) in the United States, and their production is not regulated by… Expand We have studied two new fluorine-substituted progestins as potential imaging agents for progesterone-receptor-positive human… Expand After homogenization of testicular tissue from stallions aged 1, 2 and 5 years, the unconjugated and conjugated steroids were… Expand Abstract This paper describes the synthesis of a series of new 10β-substituted 4-estrene-3,17-dione analogs ( 1–8 ). These… Expand Abstract The metabolism of testosterone by human benign hypertrophic prostate to 19-norandrost-4-ene-3,17-dione (∼1%), 19-nor-5… Expand