[ring compounds having at least one nitrogen atom in their nuclei. ( CSP )]
UMLS (CSP) C0597072 Relation/PAR: Heterocyclic Compound
Relation/CHD: acridine
azepine
imidazole
2 benzazine
lactam
oxazine
phenanthridine
phenanthroline
phenazine
PIPERAZINE
pteridine
purine
pyridine
pyrrole
quinazoline
1 benzazine
quinolizine
thiadiazine
thiazine
triazine
tropane
Aminoethylene
pyrrolidine
quinoxaline
diazine
nucleobase