L-Cystine powder, CAS No.56-89-3, formed by the oxidation of two cysteine molecules, a non-essential amino acid. It is used as a component for parenteral and enteral nutrition and the main active ingredient for medications used to treat dermatitis. Cystine along with the amino acid methionine are the amino-acids necessary for wound healing and forming of epithelial tissue. Cystine is known to stimulate the hematopoietic system and promote the formation of white and red blood cells. As an experienced L-Cystine manufacturer and supplier, we has been supplying and exporting L-Cystine for almost 10 years, please be assured to buy from us. Any inquiries about price and the market trend please feel free to contact us, we will reply you within 1 working day. Product Description Categories Amino Acids Qty in 20 FCL 18000kg Min Order 500kg Origin China Packaging Factory Packaging or Neutral Certificate ISO, Kosher, Halal, BRC CAS No. 56-89-3 HS Code 293090 Specification Feed/Food Grade L-Cystine Specification Item STANDARD Specific rotatory power[±] D20 -215 -225 Clarity 98.0% Ammonium salt[NH4] 0.02% Chloride[CL] 0.02% Residue on ignition 0.10% Sulfate[SO4] 0.02% Iron salt[Fe] 10 ppm Heavy metal[Pb] 10 ppm Arsenic salt 1 ppm Other amino acid Color layer can not be checked out. Loss on drying 0.20% Content 98.5 -101.0%