Beijing Mesochem Technology Co., Ltd is located in national economic and technological development of Yizhuang, which is a gathering place of world's top 500 enterprises. Devoting to pharmaceutical chemicals, find chemicals, and fundamental chemical material, Mesochem owns independent right of import and export.Based on abundant resources from Beijing various colleges and universities, Mesochem focused on incessant innovation along with research and development of new products.
CERTIFICATE OF ANALYSIS
Product name: Melatonine
CAS: 73-31-4
| BATCH NO.: HF171202 | QUANTITY:75.1kg | ||
| MFG. DATE : Dec., 2, 2017 | SPECIFICATION: As required | ||
| REP. DATE : Dec.4, 2017 | EXP. DATE : Dec., 2019 | ||
| ITEMS | STANDARDS | RESULTS | |
Appearance | White or off-white crystalline powder | Off-white crystalline powder | |
| Identification | By IR | Complies | |
| RT under chirality should complies | Complies | ||
| Chloride: it gives a reaction of chloride | Complies | ||
| Water | 3.0%~4.5% | 3.4% | |
Melting Point | 198.0~202.0ºC | 199.8~200.5ºC | |
| Residue on Ignition | ≤0.2% | 0.08% | |
| Heavy Metals | ≤10ppm | Complies | |
| Related Substances | Individual Impurities:≤0.5% | 0.15% | |
| Total Impurities:≤1.0% | 0.22% | ||
| Residual Solvent | Dichloromethane ≤0.06% | 0.0066% | |
| Acetone ≤0.5% | 0.015% | ||
| Ethyl acetate ≤0.5% | 0.0013% | ||
| E.E | ≥99.0% | 99.6% | |
Assay (on dry basis) | 98.0%~102.0% | 101.2% | |
| Conclusion:It complies to prescribed enterprise standard. | |||
