Hetero Ring Containing Patents (Class 534/701)
- Azo bonded directly to the polycyclo ring system (Class 534/703)
- The azo group is attached indirectly in the same azo moiety to an additional azo group or to an acyclic chain which contains a -CH=N- group by nonionic bonding (Class 534/704)
- Plural ring nitrogens in the polycyclo ring system (Class 534/705)
- Quinoline or isoquinoline containing (including hydrogenated) (Class 534/706)