Product Brief Introduction
Product name: L-Methyldopa
CAS：41372-08-1
MF: C10H13NO4.3/2H2O
MW: 238.24
Product Specification
|
Item |
Specification |
|
Appearance |
White or yellowish-white, fine powder |
|
Odor |
Odorless |
|
Identification |
IR: The infrared absorption spectrum of the sample complies with the reference standard. |
|
HPLC:The retention time of the major peak of the sample solution corresponds to that of the standard solution, as obtained in the assay. |
|
|
Solubility |
Complies with the standard |
|
Specific Rotation |
-25°~ -28° |
|
Residue on Ignition |
≤ 0.1% |
|
Moisture |
10.0%-13.0% |
|
Acidity (0.1M NaOH) |
≤ 0.5ml/g |
|
Related Substances
|
Methylmethyldopa ≤ 0.15% |
|
Methyldopa related compound B≤ 0.15% |
|
|
Methyldopa related compound C≤ 0.15% |
|
|
Unspecified Impurities≤ 0.05% |
|
|
Total impurities≤0.5% |
|
|
Residual Solvents |
Methanol≤ 3000ppm |
|
Dichloromethane≤ 600ppm |
|
|
Benzene≤ 2ppm |
|
|
Toluene≤ 890ppm |
|
|
Assay |
98.0%-102.0% |
