ChEBI: 1,2,3,4-tetrahydroquinoline-2,4-dione is a member of the class of quinolones that is 1,2,3,4-tetrahydroquinoline in which the hydrogens at positions 2 and 4 have been replaced by oxo groups. It is a quinolone, a cyclic ketone, an aromatic ketone and a delta-lactam. It is functionally related to a 1,2,3,4-tetrahydroquinoline.