C07C33/00 | Unsaturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms |
Note(s) In this group, in condensed ring systems of six-membered aromatic rings and other rings, the double bond belonging to a benzene ring is not considered as unsaturated for the non-aromatic ring condensed thereon, e.g. the 1,2,3,4-tetrahydro- naphthalene ring is considered to be saturated outside the aromatic ring [3] |
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