Amsacrine
Amsacrine is a sulfonamide that is N-phenylmethanesulfonamide substituted by a methoxy group at position 3 and an acridin-9-ylamino group at position 4. It exhibits antineoplastic activity. It has a role as an antineoplastic agent and an EC 5.99.1.3 [DNA topoisomerase (ATP-hydrolysing)] inhibitor. It is a sulfonamide, a member of acridines and an aromatic ether.