Wiktionary
atovaquone
n. A naphthalene used to treat pneumocystis pneumonia, toxoplasmosis, and malaria.
Wikipedia
Atovaquone
Atovaquone (alternative spelling: atavaquone) is a chemical compound that belongs to the class of naphthoquinones. Atovaquone is a hydroxy-1,4-naphthoquinone, an analog of ubiquinone, with antipneumocystic activity. It is manufactured in the US in the liquid form, or oral suspension, under the brand name Mepron.