:Purinones

File:9H-Purine.svg]]

File:Xanthin - Xanthine.svg]]

File:Hypoxanthin - Hypoxanthine.svg]]

Purinones (oxopurines) are derivatives of purine which have a substituted keto group.{{MeshName|Purinones}}

Most are divided into 2 families:

• Hypoxanthines
• Xanthines

Purinones form the central core of numerous pharmaceutical drugs used in a variety therapeutic areas.{{cite web | title = Purinones | url = https://go.drugbank.com/categories/DBCAT000504 | work = DrugBank }}