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| Grade | Pharma grade |
| MW | 204.23 |
| Density | (20oC)400g/cm3 |
| Melting point | 290 °C |
| UN No. | |
| CAS No. | 73-22-3 |
| Assay (as C11H12N2O2) | ≥98.5% |
| Specific rotation [a]20D | -30.0°~-32.5° |
| Identity | passes test |
| Acidity | 5.4~6.4 |
| Transmittance of solution | ≥95.0% |
| Chloride | ≤0.02% |
| Sulfate | ≤0.02% |
| Ammonium | ≤0.02% |
| Foreign amino acid | ≤0.5% |
| Loss on drying | ≤0.2% |
| Ignition residue | ≤0.1% |
| Iron | ≤0.002% |
| Heavy metals | ≤0.001% |
| Arsenic | ≤0.0001% |
| Bacterial endotoxin, EU | 50 (for injection) |
| Company: | Xilong Chemical Industry Incorporated Co., Ltd. |
| Address: | 21/F, DS Building, 538 North Dezheng Road |
| Region: | Guangzhou, Guangdong, China |
| Contact Person: | Mr. Peter Chow |
| Telephone: | 86-20-62612188 |
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