CPC Subgroup
C07C 15/60 containing three rings
Full Title
Cyclic hydrocarbons containing only six-membered aromatic rings as cyclic parts > substituted by unsaturated carbon radicals > polycyclic condensed > containing three rings
C07C 15/60 Cyclic hydrocarbons containing only six-membered aromatic rings as cyclic parts > substituted by unsaturated carbon radicals > polycyclic condensed > containing three rings