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C07J5/00—Normal steroids containing carbon, hydrogen, halogen or oxygen, substituted in position 17 beta by a chain of two carbon atoms, e.g. pregnane and substituted in position 21 by only one singly bound oxygen atom, i.e. only one oxygen bound to position 21 by a single bond
C—CHEMISTRY; METALLURGY
C07—ORGANIC CHEMISTRY
C07J—STEROIDS
C07J75/00—Processes for the preparation of steroids in general
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CH296835D1947-09-151948-09-15Verfahren zur Herstellung von 3,11,20-Triketo-17a-hydroxy-21-acetoxy- 4-pregnen.
CH296835A
(de)