N-Acetyl-L-Cysteine

N-Acetyl-L-Cysteine CAS NO 616-91-1Chemical NameN-Acetyl-L-CysteineMolecular StructureMolecular FormulaC5H9NO3SMolecular Weight163.20CharacteristicsWhite crystalline powderPacking25kg/drum,25kg/cartonQuality StandardAJI92/USP28/EP5/FCCIVSpecification Specific rotation[a]D20° +21.3 to +27.0State of solution≥98.0%Chloride(CL) Ammonium(NH4) Sulfate(SO4)≤0.04%≤0.02%≤ 0.030%Iron(Fe)≤20PPmHeavy metals(Pb) ≤10PPmOther amino acids Chromatographically Not detectableArsenic(As2O3) ≤1PPmLoss on drying≤0.5%Residue on ignition≤0.20%Assay 98.5 101.0%PH 2.0 2.8Melting point106 to 110