A crystalline substance, C6H4O2 (called also benzoketone), first obtained by the oxidation of quinic acid and regarded as a double ketone; also, by extension, any one of the series of which quinone proper is the type.
any of a class of aromatic yellow compounds including several that are biologically important as coenzymes or acceptors or vitamins; used in making dyes
a biological chemical responsible for creating energy
a likely candidate for this pigment also, since their their alternating single and double bonds trap certain wavelengths
a natural oxidation product of the major lignan constituent from Larrea tridentata , known as nordihydroguaiaretic acid (NDGA)
The substance in ink that promotes oxidation and discoloration and is associated with transfer stains. (2) A yellowish, crystalline compound with an irritating odor, obtained by the oxidation of aniline, and regarded as a benzene with two hydrogen atoms replaced by two oxygen atoms. It is used in tanning and making dyes. Quinone will oxidize another material and be itself reduced to hydroquinone. (See Aniline). - See "Reprint."
an oxidation product of a catechol, that in the case of catecholamines may lead to neurotoxic metabolites
A quinone (or benzoquinone) is either one of the two isomers of cyclohexadienedione or a derivative thereof. Quinones are not aromatic, but are dienes. The carbonyl groups are ketone-like.