Specific rotation[a]D20°
-215°~-225°
State of solution
≥98.0%
Heavy metals(Pb)
≤10PPm
Residue on ignition
≤0.1%
Iron(Fe)
≤20PPm
Loss on drying
≤0.02%
Other amino acids
Conforms
Arsenic(As2O3)
≤1PPm
Chloride(CI)
Ammonium(NH4)
Sulfate(SO4)
Assay
98.0~101.0%
PH
5~6.5
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