C07D249/00
Heterocyclic compounds containing five-membered rings having three nitrogen atoms as the only ring hetero atoms
C07D249/00
Heterocyclic compounds containing five-membered rings having three nitrogen atoms as the only ring hetero atoms
C07D249/16
condensed with carbocyclic rings or ring systems
C07D249/16
condensed with carbocyclic rings or ring systems