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3900497
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Patent Grant
3900497
References
Source
Patent Number
3,900,497
Date Filed
Not available
Date Issued
Tuesday, August 19, 1975
48 years ago
CPC
C07D327/04 - Five-membered rings
C07D325/00 - Heterocyclic compounds containing rings having oxygen as the only ring hetero atoms according to more than one of the main groups C07D303/00 - C07D323/00
C07D327/00 - Heterocyclic compounds containing rings having oxygen and sulfur atoms as the only ring hetero atoms
C07D327/10 - Two oxygen atoms and one sulfur atom
C07D339/06 - having the hetero atoms in position 1,3
C07D339/08 - Six-membered rings
US Classifications
549 - Organic compounds
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