Lecanoric acid

Lecanoric acid is a compound that is derived from certain species of lichen. It is a dibenzofuran derivative and is one of the main components of lichen substances. Lecanoric acid is used in the manufacture of dyes and inks, and has also been used in traditional medicine for its antibacterial properties.

History

Lecanoric acid was first isolated in 1844 by the chemist Auguste Laurent. He named it after the lichen genus Lecanora, from which it was first extracted. The compound was later found in many other lichen species.

Structure and properties

Lecanoric acid is a dibenzofuran derivative, meaning it consists of two benzene rings fused to a furan ring. It is a white, crystalline solid that is soluble in alcohol and ether, but insoluble in water.

Uses

Dyes and inks

Lecanoric acid is used in the manufacture of certain dyes and inks. When treated with potassium hydroxide, it forms a red compound known as orcinol red, which is used as a dye.

Medicine

In traditional medicine, lecanoric acid has been used for its antibacterial properties. It has been found to be effective against a range of bacteria, including Staphylococcus aureus and Escherichia coli.

See also

• Lichen
• Dibenzofuran
• Auguste Laurent
• Orcinol