Crisaborole is a member of the class of benzoxaboroles that is 5-hydroxy-1,3-dihydro-2,1-benzoxaborole in which the phenolic hydrogen has been replaced by a 4-cyanophenyl group. A phosphodiesterase 4 inhibitor that is used for treatment of mild to moderate atopic dermatitis in children and adults. It has a role as a phosphodiesterase IV inhibitor, an antipsoriatic and a non-steroidal anti-inflammatory drug. It is a benzoxaborole, an aromatic ether and a nitrile.

Crisaborole is a novel oxaborole approved by FDA on December 14, 2016 as Eucrisa, a topical treatment of for mild to moderate atopic dermatitis. This non-steroidal agent is efficacious in improving disease severity, reducing the risk of infection and reducing the signs and symptoms in patients 2 years old and older. It reduces the local inflammation in the skin and prevents further exacerbation of the disease with a good safety profile. Its structure contains a boron atom, which facilitates skin penetration and binding to the bimetal center of the phosphodiesterase 4 enzyme. It is currently under development as topical treatment of psoriasis.

Crisaborole is a Phosphodiesterase 4 Inhibitor. The mechanism of action of crisaborole is as a Phosphodiesterase 4 Inhibitor.