U.S. Department of Health & Human Services Divider Arrow National Institutes of Health Divider Arrow NCATS

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Status:
US Previously Marketed
First approved in 1999

Class (Stereo):
CHEMICAL (ACHIRAL)

Targets:


Mequinol (mequinol is 4-hydroxyanisole) is an active ingredient in topical drugs used for skin depigmentation. The mechanism of action of mequinol is unknown. Although mequinol is a substrate for the enzyme tyrosinase and acts as a competitive inhibitor of the formation of melanin precursors, the clinical significance of these findings is unknown.