Two Aryl Rings Or Ring Systems Bonded Directly To The Same Carbon Patents (Class 564/315)
- Oxygen or sulfur is bonded directly to the carbon and is part of the chain (Class 564/317)
- Oxygen, carbonyl or carbon to carbon unsaturation in the chain; or ether, carbonyl, carbon to carbon unsaturation or hydroxy, bonded directly to carbon, is part of a substituent bonded directly to the acyclic carbon or chain (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal) (Class 564/319)
- Hydroxy or ether oxygen bonded directly to the carbon (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal) (Class 564/320)