L-валин

L-Vaine involves in forming connecive issue, epithelial mesenchymal capillary formation and maintain normal permeability, can increase appetite andpromote secretion of pepsin, enchance immunity, improvete growth retardation, to prevent tooth decay and promote the growth of children and improve calcium absorption, promote bone growth.Used mainly as nutritional supplements, and the main ingredients of amino acid infusion and integated amino acid preparation.USP24ItemLimitResultAssay98.5 101.5%?99.8%pH5.5 7.05.8Specific rotation[a]D20+26.6° +28.8°+28.2°Chloride(Cl)≤0.05%<0.05% Sulfate(SO4)≤0.03%<0.03% Iron(Fe)≤30ppm<30ppm Heavy metals(Pb)≤15ppm<15ppm Arsenic(As)?≤1.5ppm<1.5ppmLoss on drying≤0.30%0.08%Residue on ignition≤0.10%0.02%Organic volatile impuritiesconformconform