... Origin:Salix alba L. 3.Specification:Salicin(CAS:138-52-3)15%,25%,50% 4.GMO FREE Main Function1 ... and neck pain, muscle aches, and menstrual cramps. 3. Anti-rheumatism and function of constringency, an astringent, ... Powder OdorCharacteristicTastedCharacteristicExtract SolventsWater and Ethanol Assay(HPLC)Salicin≥50%Sieve AnalysisNLT 100% pass 80 meshLoss on ... Bark Extract Salicin(CAS:138-52-3) 50%