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The synthesis of esters of norethisterone (17 alpha-ethynyl-17 beta-hydroxy-estr-4-en-3-one) with acids containing a benzene ring is described, two methods of esterification being compared in terms of yield and convenience. The activities of these esters as long-acting contraceptive agents have been evaluated.
Structure-Activity Relationship, Spectrophotometry, Infrared, Delayed-Action Preparations, Carboxylic Acids, Esters, Indicators and Reagents, Norethindrone, Mass Spectrometry
Structure-Activity Relationship, Spectrophotometry, Infrared, Delayed-Action Preparations, Carboxylic Acids, Esters, Indicators and Reagents, Norethindrone, Mass Spectrometry
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