Pyrimidinediones

Primidone, sold under various brand names (including Mysoline), is a barbiturate medication that is used to treat partial and generalized seizures and essential tremors. It is taken by mouth.

Toxoflavin is a toxin produced by a variety of bacteria including Burkholderia gladioli. It also has antibiotic properties.

thumb|right|100px|Pyrimidine Pyrimidinediones are a class of chemical compounds characterized by a pyrimidine ring substituted with two carbonyl groups.