Chemical name:L-Tryptophan MF:C11H12N2O2 MW:204.23 CAS:73-22-3
Description White crystalline powder Identification Meet the requirement Appearance of solution Clear and Colourless Specific rotation[a]D20 -30.0~-33.0 Loss on drying ≤0.50% Residue on ignition ≤0.10% Chloride(Cl) ≤0.02% Sulfate(SO4) ≤0.03% Ammonium(NH4) ≤0.02% Iron(Fe) ≤20PPM Heavy metals(Pb) ≤ 10PPM Lead(pb) 3ppm max As2O3(As) 0.5ppm max Mercury (Hg) 0.1ppm max Cadmium (Cd) 1ppm max Assay 98.5~101.5% Other amino acids Meet the requirement