MedlinePlus a682437 Formula C7H8O2 | Routes ofadministration Topical Molar mass 124.1372 g/mol Density 1.55 g/cm³ | |
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AHFS/Drugs.com International Drug Names Legal status CA: UnscheduledUS: ℞-only and UnscheduledIn general: unscheduled Synonyms 4-Hydroxyanisole; para-Guaiacol | ||
Can mequinol tretinoin lead to hyperpigmentation dr rasya dixit
Mequinol, MEHQ or 4-Methoxyphenol, is a phenol used in dermatology and organic chemistry.
Contents
How to dissolve mequinol crystal fast method
Dermatology
Mequinol is a common active ingredient in topical drugs used for skin depigmentation. As a topical drug Mequinol is often mixed with tretinoin, a topical retinoid. A common formulation for this drug is an ethanolic solution of 2% Mequinol and 0.01% tretinoin by mass. Dermatologists commonly prescribe the drug to treat solar lentigines, liver spots, or age spots.
Lower dosages of mequinol have been used in conjunction with a Q-switched laser to depigment skin in patients with disseminated idiopathic vitiligo.
Organic chemistry
In organic chemistry 4-methoxyphenol is used to inhibit the radical polymerization of monomers (e.g. acrylates or styrene monomers).
Preparation
4-Methoxyphenol is produced from p-benzoquinone and methanol via a free radical reaction.
Safety
People can be exposed to 4-methoxyphenol in the workplace by breathing it in, skin absorption, swallowing it, skin contact, and eye contact. The National Institute for Occupational Safety and Health (NIOSH) has set a recommended exposure limit (REL) of 5 mg/m3 over an 8-hour workday.
