organic chemistry Organic chemistry is a subdiscipline within chemistry involving the science, scientific study of the structure, properties, and reactions of organic compounds and organic matter, organic materials, i.e., matter in its various forms that contain ...

hydroxyanthraquinones refers to compounds with the formula C₁₂H_8−n(OH)_n(CO)₂ where n ≥ 1. Almost all hydroxyanthraquinones are derivative of 9,10-anthraquinone. Quoted by Khalafy and Bruce. Quoted by Khalafy and Bruce.

Isomers

One peculiarity of the hydroxyanthraquinones is the relative obscurity of the monohydroxy derivatives. Most hydroxyanthraquinones have two or more hydroxy groups.

Dihydroxy

Dihydroxyanthraquinones have the formula . The dyes alizarin ( 1,2-Dihydroxyanthraquinone) and quinizarin are prominent examples.

Trihydroxy

Trihydroxyanthraquinones have the formula . 1,2,4-Trihydroxyanthraquinone, commonly called purpurin, is a naturally occurring red/yellow dye.

Tetrahydroxy

Tetrahydroxyanthraquinones have the formula . The dye quinalizarin (1,2,5,8-tetrahydroxyanthraquinone is one example.

Hexahydroxy

Dihydroxyanthraquinones have the formula .1,2,3,5,6,7-hexahydroxy-9,10-anthraquinone ( rufigallol) occurs in nature.

References