Alkannin

Alkannin is a naturally occurring naphthoquinone found in the roots of plants belonging to the Boraginaceae family, most notably *Alkanna tinctoria*. It is a red-violet pigment and has been used historically as a dye. Chemically, alkannin is a stereoisomer of shikonin, another naphthoquinone derived from the *Lithospermum erythrorhizon* plant. The extraction of alkannin typically involves using organic solvents to isolate it from the plant material.

Research has explored the potential biological activities of alkannin. Studies suggest it possesses antioxidant properties, which are attributed to its chemical structure and ability to scavenge free radicals. Additionally, some investigations have indicated anti-inflammatory effects, although the precise mechanisms are still under investigation. There is also emerging research into its antimicrobial and wound-healing capabilities.

While alkannin has a history of traditional use, its application in modern medicine or cosmetics is still largely in the research and development phase. Further clinical trials are generally needed to establish its efficacy and safety for various therapeutic purposes. Its use as a natural dye persists in some artisanal applications.