Mequinol is a chemical substance that looks like a white flake or waxy crystal. The molecular formula is C7H8O2. It is used as a polymerization inhibitor for vinyl type plastic monomers, UV inhibitors, dye intermediates, and antioxidant BHA (3-tert-butyl-4-hydroxyanisole) for synthesizing edible oils and fats and cosmetics. It is an important intermediate for fine chemical products such as medicines, spices and pesticides. It is mainly used as a polymerization inhibitor for the production of acrylonitrile, acrylic acid and its esters, methacrylic acid and its esters. The biggest advantage is that it does not require the removal of p-hydroxyanisole when used, it can directly participate in the polymerization. It is also used as a synthetic agent, a plasticizer, and a food additive (BHA).

Applied in the pharmaceutical field.
Applied as cosmetic grade---Skin whitening