IPC Subgroup
C07D 221/2 Spiro-condensed ring systems
Introduced: July 1974
Last revised: January 2006
Full Title
Heterocyclic compounds containing six-membered rings having one nitrogen atom as the only ring hetero atom, not provided for by groups > condensed with carbocyclic rings or ring systems > Spiro-condensed ring systems
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- ORGANIC CHEMISTRY
- Subclass:
- HETEROCYCLIC COMPOUNDS