Item | Standard | Analysis data |
Appearance | White crystalline powder | Conforms |
Solubility (1.0g/20ml H2O) | Clear Colorless | Conforms |
Specific rotation(a)D20 (C=1 ,H2O) | +7.5º to +8.5º | +7.9º |
Assay | 98.0-102.0% | 99.2% |
Melting Point (ºC) | 200ºC to 210 ºC | Conforms |
Heavy metals(Pb) | Not more than 20ppm | 10ppm |
Chloride(C1) | Not more than 0.02% | 0.012% |
Iron(Fe) | Not more than 10ppm | 8ppm |
Arsenic(As2O3) | Not more than 4ppm | <4ppm |
Moisture | Not more than 1.0% | 0.6% |
Residue on ignition | Not more than 0.2% | 0.07% |
Total plate count | Not more than 1,000cfu/g | Conforms |
Yeast and mold | Not more than 100cfu/g | Conforms |
PH | 5.0-6.0 | 5.4 |
Conclusion | The product conforms to the standard | |
氨基酸，手性氨基酸，保护氨基酸，医药中间体
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