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C07J21/00—Normal steroids containing carbon, hydrogen, halogen or oxygen having an oxygen-containing hetero ring spiro-condensed with the cyclopenta(a)hydrophenanthrene skeleton
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Steroid Compounds
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DK257639A1938-12-151939-11-16Fremgangsmaade til Fremstilling af cykliske Ketaler af Ketosteroider.
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