What is "monobenzone"

n. A compound used as a topical drug for medical depigmentation.

4-(Benzyloxy)phenol, also called monobenzone and monobenzyl ether of hydroquinone (MBEH) is an organic chemical in the phenol family with chemical formula CHCHOCHOH. It is used as a topical drug for medical depigmentation. It is a colourless solid that is classified as the monobenzyl ether of hydroquinone. Monobenzone is soluble in alcohol, benzene, and diethyl ether, and practically insoluble in water.