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2171494
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Information
Patent Grant
2171494
References
Source
Patent Number
2,171,494
Date Filed
Not available
Date Issued
Tuesday, August 29, 1939
84 years ago
CPC
C07C49/825 - all hydroxy groups bound to the ring
C07C37/002 - by transformation of a functional group
C07C37/62 - by introduction of halogen by substitution of halogen atoms by other halogen atoms
C07C39/245 - monocyclic polyhydroxylic containing halogens bound to ring carbon atoms
C07C45/46 - Friedel-Crafts reactions
US Classifications
568 - Organic compounds
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