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| Product name | Pterostilbene |
| Molecular Formula | C16H16O3 |
| CAS No. | 537-42-8 |
| Quality Standard | 99% up, Food grade |
| Appearance | White powder |
| Items | Specification | Result |
| Appearance: | White or off-white powder | White powder |
| Melting point | 92 - 96°C | 93 - 95°C |
| Assay (HPLC) | ≥99% | 99.36% |
| Loss on drying | ≤0.5% | 0.04% |
| Moisture content | ≤0.5% | 0.09% |
| Ignition residue | ≤0.5% | 0.02% |
| Heavy metals: | ≤10 ppm | Conforms |
| Arsenic: | ≤ 2 ppm | Conforms |
| Cadmium | ≤2 ppm | Conforms |
| Lead | ≤5 ppm | Conforms |
| Mercury | ≤1 ppm | Conforms |
| Arsenic | ≤5ppm | Complies |
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