| Certification: | RoHS, BRC, ISO, FDA, HACCP |
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| Assay Method: | HPLC-MS, GPC, HPLC, UV |
| Application Form: | Capsule, Powder |
| State: | Powder |
| Extract Source: | Velvet Bean Extract |
| Product Name: | Velvet Bean Extract |
| Samples: |
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| Customization: |
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Suppliers with verified business licenses
Audited Supplier
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1. Levodopa can be applied in health supplement.
2. Levodopa can be applied in functional food additive.
3. Levodopa can be applied in cosmetics and personal care products.
4.Levodopa can be applied in hair coloring.
| 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) |
Suppliers with verified business licenses
Audited Supplier 
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