N In 1 And 4 Ring Positions (9/6509b4; 9/6509b4g; 9/6509b4k; 9/6509b4r; 9/6509b4v) Patents (Class 987/81)

N atom of ring is bonded directly to a p atom or is indirectly bonded to a p atom other than through a ring atom of the six-membered ring (9/6509b4e) (Class 987/82)

There are no patents to show for this class.