Item

USP28

Assay

98.5～101%

pH

5.5～6.5

Specific rotation[a]D020

- 215°～ - 225°

Chloride(Cl)

≤0.02%

Ammonium(NH4)

≤0.02%

Sulfate(SO4)

≤0.02%

Iron(Fe)

≤10ppm

Heavy metals(Pb)

≤10ppm

Arsenic

≤1ppm

Other amino acids

Not detectable

Loss on drying

≤0.20%

Residue on ignition

≤0.10%

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