| C07C39/00 | Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring | 
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 Note(s) In this group, in condensed ring systems of six-membered aromatic rings and other rings, the double bond belonging to the benzene ring is not considered as unsaturated for the non-aromatic ring condensed thereon [3]  | 
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