 |
| Menge: | |
|---|---|
DY0650
73-22-3
200-795-6
C11H12N2O2
L-tryptophan
| Index Name | Specifications |
| Appearance | White to yellowish crystal powder Slightly soluble in alcohol |
| Assay | 98.5 to 101.5% |
| Optical rotation | -29.4 to -32.8degree |
| pH | 5.5 to 7.0 |
| Loss on drying | 0.3% max |
| Residue on ignition | 0.3%max |
| Chloride | 0.05%max |
| Sulphate | 0.03%max |
| Iron | 0.003%max |
| Heavy metal | 0.0015%max |