Package | carton drum with two plastic bags inside |
Net weight | 25KG/Drum |
Storage | Sealed in cool and dry place to avoid moisture and light |
Shelf life | 2 years when properly stored |
Lead time | 1~3 days after confirmation |
Test Items | Test Standards |
Appearance | White to off-white powder |
Identification | IR |
The retention time of the major peak of the sample solution corresponds to that of the standard solution, as obtained in assay | |
Optical rotation | -160°~-167° |
Loss on drying | ≤0.5% |
Residue on ignition | ≤0.1% |
Heavy metals(Pb) | ≤20ppm |
Organic impurities | Levodopa related compound Aa≤0.1% |
L-Tyrosine≤0.1% | |
Levodopa related compound B≤0.5% | |
L-Veratrylglycineb≤0.1% | |
Any unspecified impurity ≤0.1% | |
Total impurities≤1.1% | |
Assay | 98.0%~102.0%(on dried basis) |