Function: | Nervous System Drugs |
---|---|
Grade Standard: | Medicine Grade |
Type: | Chemical Reagent |
State: | Solid |
Volatile: | Not Volatile |
Shelf Life: | 4 Years |
Samples: |
---|
Suppliers with verified business licenses
Product Name | CARBIDOPA | According to | usp | |
Items | Standard | Results | ||
Appearance | A white or creamy white powder | Creamy white powder | ||
Identification | IR:IR spectrum is consistent with carbidopa CRS | Conforms | ||
HPLC:Conform with the retention time of the major peak in the chromatogram | Conforms | |||
Specific rotation | -21.0°~23.5°,calculated as the monohydrate | -22.3° | ||
Loss on drying | 6.9%~7.9% | 7.3% | ||
Residue on ignition | ≤0.1% | 0.01% | ||
Heavy metals | ≤0.001% | <0.001% | ||
Limit of methyldopa and carbidopa related components A | Methyldopa:≤0.5% Carbidopa related components A:≤0.5% Any unknown impurity:≤0.10% Total impurities:≤1.0% |
0.17% <LOD(0.02%) 0.05% 0.27% |
||
Residual solvents | Ethanol:≤0.10% | 0.0003% | ||
Assay | 98.0%~102.0% | 99.7% | ||
Particle size | NLT90% pass 100mesh | Conforms |
Suppliers with verified business licenses