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3770741
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Patent Grant
3770741
References
Source
Patent Number
3,770,741
Date Filed
Not available
Date Issued
Tuesday, November 6, 1973
50 years ago
CPC
C07D239/553 - with halogen atoms or nitro radicals directly attached to ring carbon atoms
C07C55/34 - containing rings
C07C317/00 - Sulfones Sulfoxides
C07D213/55 - Acids Esters
C07D239/545 - with other hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
C07D307/54 - Radicals substituted by carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen
C07D333/24 - Radicals substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen
C07D471/14 - Ortho-condensed systems
C07D487/14 - Ortho-condensed systems
C07D513/14 - Ortho-condensed systems
US Classifications
544 - Organic compounds
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