with carboxyl groups on a condensed ring system containing two rings

Full Title

Compounds having carboxyl groups bound to carbon atoms of six—membered aromatic rings and containing any of the groups OH, O—metal, —CHO, keto, ether, [IMAGE cpc-sch-C07C-0958.gif] groups, [IMAGE cpc-sch-C07C-0959.gif] groups, or [IMAGE cpc-sch-C07C-0960.gif] groups (cyclic anhydrides C07D) > containing hydroxy or O-metal groups > polycyclic > with carboxyl groups on a condensed ring system containing two rings