 |
| Menge: | |
|---|---|
DY158603
555-30-6
209-089-2
C10H13NO4
methyldopa
| Index name | Specifications |
| Appearance | A white or yellowish white,crystalline powder or colourless or almost colurless crystals |
| IR | IR spectrum is conslstent with methyldopa RS |
| UV | |
| Color test | Conforms |
| Acidlity(0.1N NaOH) | 0.50ml/g max. |
| Specific rotation | -25 to -28degree |
| Residue on ignition | 0.1% max. |
| Heavy metals | 0.001% max. |
| water | 10.0% to 13.0% |
| 3-O-methylmethyldopa | 0.15% max. |
| Any unknown impurity | 0.05% max. |
| Total impurity | 0.5% max. |
| Assay | 98.0 to 101.0% |
| Residual solvents (Dlchloromethane) | 100ppm max. |
| Index name | Specifications |
| Appearance | A white or yellowish white,crystalline powder or colourless or almost colurless crystals |
| IR | IR spectrum is conslstent with methyldopa RS |
| UV | |
| Color test | Conforms |
| Acidlity(0.1N NaOH) | 0.50ml/g max. |
| Specific rotation | -25 to -28degree |
| Residue on ignition | 0.1% max. |
| Heavy metals | 0.001% max. |
| water | 10.0% to 13.0% |
| 3-O-methylmethyldopa | 0.15% max. |
| Any unknown impurity | 0.05% max. |
| Total impurity | 0.5% max. |
| Assay | 98.0 to 101.0% |
| Residual solvents (Dlchloromethane) | 100ppm max. |