Sulfur Containing Hetero Ring Patents (Class 514/430)
- Plural hetero atoms in the hetero ring (Class 514/439)
- Polycyclo ring system having the hetero ring as one of the cyclos (Class 514/443)
- Additional hetero ring (Class 514/444)
- Chalcogen bonded directly to ring carbon of the hetero ring (Class 514/445)
- Chalcogen bonded directly to ring sulfur by nonionic bonding (Class 514/446)
- Nitrogen bonded directly to the hetero ring (Class 514/447)
- C=O bonded directly to the hetero ring (X is chalcogen) (Class 514/448)