N-Acetyl-L-Tryptophan CAS No.: 1218-34-4 Item Specification Appearance White crystals or crystalline powder Specific Rotation[a]D20 +25.8° to +27.0° State of solution Clear and colorless Not less than 95.0% Chloride (Cl) Not more than 0.020% Ammonium (NH4) Not more than 0.02% Sulfate (SO4) Not more than 0.020% Iron (Fe) Not more than 10ppm Heavy Metals (Pb) Not more than 10ppm Aresenic (As2O3) Not more than 1ppm Other amino aicds No spot Loss on drying Not more than 0.20% Residue on ignition Not more than 0.10% Assay 98.5% to 101.0% pH 2.0 to 3.5 mutualchem(at)gmail(dot)com


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