Product Name: shikonin Other Name: Alkannin;5,8-Dihydroxy-2-[(1R)-1-hydroxy-4-methyl-pent-3-enyl]naphthalene-1,4-dione Molecular Formula: C16H16O5 Molecular Weight: 288.3 Appearance: Red crystalline solid powder Purity: 30%-99% CAS Number: 517-89-5 Supplier: ZHENYIBIO Shikonin could be found in the plant of Lithospermum erythrorhizon Sieb. et. Zucc and Arnebia euchroma (Royle) Johnst. It could also be produced using plant cell culture techniques. Shikonin is recorded in British Pharmacopoeia as a reference compound. Zicao, a traditional Chinese medicine firstly recorded in Shen Nongâ??s Herbal Classic, has long been used medically in history . Chinese Pharmacopoeia (Edition 2015) recorded the root of Arnebia euchroma (Royle) Johnst and Arnebia guttata Bge as Zicao, which is mainly used for inflammatory diseases such as macular eruptions, measles, sore throat, carbuncles, and burns.