Gromwell RootExtract: 
Shikonin, Acetylshikonin,β-Hydroxy-isovalerylshikolin,β,β-Dimethylacrylshikolin
Latin Name :   Arnebia euchroma??????Royle?????? Johnst??????/ Lithosper??????mumerythorhizon sieb.et zucc.
Plant Part Used:   Root(Dried , 100% natural)
Extract Solution :  CO2 /GrainAlcohol
CAS#:            [517-89-5]

Chinese Gromwell belongs to akind of medical herbaceous herb that grows many years. It isconsidered as top grade in the "compendium of materia medica",because it has wide curative effect, such as Invigorate thecirculation of blood, detoxicating , anti-inflammation,anti-cancer, etc.

Species including :
Hard Gromwell Root[Lithosper??????mum erythorhizon sieb.et zucc.] ,
Soft Gromwell Root (SinkiangGromwell Root) [Arnebiaeuchroma??????Royle??????Johnst.]

Brief Processing Flow ofGromwell Root Extract:

Shikonin 98% : SolventExtraction→Cu2 Complexing→Filtration→Cu2Alternate→Hydrolysis→Neutralization→Recrystallization