CAS number： 50-63-5
Molecular formula： C18H32ClN3O8P2
molecular weight：
Chemical structure：
| Item | Standard | Result | |||
| Characters | A white or almost white crystalline powder | Conform | |||
| Melting point | One melting at about 195°C | 196°C | |||
| Identification | Positive | Conform | |||
| Solutions | Complies with test | Conform | |||
| Appearance of solution | BY5 OR GY5 max | GY5 | |||
| PH(10% w/v) | 3.8-4.3 | 4.2 | |||
| Related substance | one spot 1.0% max | Conform | |||
| Any other spot 0.5% max | Conform | ||||
| Heavy metals | 20ppm max | 10ppm | |||
| Water | 2.0% max | 0.6% | |||
| Assay | 98.5%~101.0% | 99.6% | |||
