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D-Proline
CAS RN: 344-25-2
| Solubility in water | Colorless & clear (c=5) |
| Specific rotation (20℃) | + 83.5°～ +86.0°(c= 4,water) |
| Loss on drying | Not more than 0.4% |
| Residue on ignition | Not more than 0.1% |
| Chloride (Cl) | Not more than 0.03% |
| Sulfate (SO4) | Not more than 0.03% |
| Heavy metals (as Pb) | Not more than 10ppm |
| Iron (Fe) | Not more than 10ppm |
| Ammonium (NH4) | Not more than 0.02% |
| Arsenic (As2O3) | Not more than 1ppm |
| Other amino acids | Not detected by T.L.C.(The spotted amount, 20μg) |
| Assay | 98.5%～101.0% |
| L-Isomer | Not more than 0.5% |
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