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. |
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