Polycyclic compound

Patent Granted In the field of organic chemistry, a polycyclic compound is an organic chemical featuring several closed rings of atoms, primarily carbon.[citation needed] These ring substructures include cycloalkanes, aromatics-, and other ring types. The come is sizes of three atoms and upward, and in combinations of linkages that include tethering (such as in biaryls), fusing (edge-to-edge, such as in anthracene and steroids), links via a single atom (such as in spiro compounds), and bridged cyclics such as the longifolene example.