Naphthoquinones

**Definition:** Naphthalene rings which contain two ketone moieties in any position. They can be substituted in any position except at the ketone groups.

**Tree numbers:** - D02.455.426.559.847.638.721 - D02.806.550 - D04.615.638.721

**Synonyms:** - Naphthoquinone - Naphthalenediones