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Hydroquinone, also known as benzene-1,4-diol or quinol, is an aromatic organic compound that is a type of phenol, a derivative of benzene, having the chemical formula C 6 H 4 (OH) 2. It has two hydroxyl groups bonded to a benzene ring in a para position.
Hydroquinone is a commonly used agent in skin whiteners. The European Union banned it from cosmetics in 2000. [9] It works by decreasing melanin production. [9] Tretinoin, also known as all-trans retinoic acid, may be used to whiten specific areas. [6] It may be used in combination with steroids and hydroquinone. [6]
Arbutin is a compound where a glucose molecule, specifically d-glucose, is chemically bound to hydroquinone.In aqueous solutions, glucose can exist in one of three stereoisomeric forms: α, β, or γ, with the β-anomer being the predominant form. [4]
Hydroquinone is used to reduce the activated silver ions to metallic silver. During this process, hydroquinone is oxidized to quinone. All silver halide not activated by light or reduced by hydroquinone is removed, leaving a negative by deposited silver where the film had been struck by light.
α-Arbutin is a synthetic substance that can be produced by enzymatic glycosylation of hydroquinone in the presence of α-amylase and dextrin.In one example, this has been done in recombinant Escherichia coli, using amylase of Bacillus subtilis and sucrose phosphorylase of Leuconostoc mesenteroides.
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Monobenzone, also called 4-(Benzyloxy)phenol and monobenzyl ether of hydroquinone (MBEH) is an organic chemical in the phenol family with chemical formula C 6 H 5 CH 2 OC 6 H 4 OH. [1] [2] It is used as a topical drug for medical depigmentation. [3] It is a colourless solid that is classified as the monobenzyl ether of hydroquinone.
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