含量Assay

99.0～101.5%

98.5～101.5%

98.5～102.0%

酸度pH

5.4～6.0

5.4～6.0

5.4～6.0

比旋度Specific rotation[a]D020

-33.5～-35.0°

-32.7～-34.7°

-33.0～-35.2°

溶液的透光度Transmittance(T430)

≥98.0%

氯化物Chloride(Cl)

≤0.020%

≤0.050%

*Ammonium(NH4)

≤0.020%

硫酸盐Sulfate(SO4)

≤0.020%

≤0.030%

铁盐Iron(Fe)

≤10ppm

≤30ppm

*Heavy metals(Pb)

≤10ppm

≤15ppm

≤20ppm

砷盐Arsenic

≤1ppm

≤3ppm

铅Lead(Pb)

≤10ppm

其他氨基酸
Other amino acids

Conforms

Conforms

干燥失重Loss on drying

≤0.20%

≤0.30%

≤0.3%

炽灼残渣
Residue on ignition

≤0.10%

≤0.40%

≤0.2%

有机挥发物
Organic volatileimpurities

Conforms