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CPC
C07J21/001
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C
CHEMISTRY METALLURGY
C07
Organic chemistry
C07J
STEROIDS
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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C07J21/001
Lactones
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Patents Grants
last 30 patents
Information
Patent Grant
Spirolactones
Patent number
4,129,564
Issue date
Dec 12, 1978
Schering, A.G. Patentabteilung
Rudolf Wiechert
C07 - ORGANIC CHEMISTRY