Eszopiclone
Eszopiclone CAS: 138729-47-2 Specification: Zopiclone Intermediates Supply 6-(5-Chloro-2-pyridyl)-6,7-dihydro-7-hydroxy-5H-pyrrolo[3,4-b]pyrazin-5-one CAS: 43200-81-3 4-Methyl-1-piperazinecarbonyl chloride hydrochloride Cas 55112-42-0
Product Details
Eszopiclone CAS: 138729-47-2
Specification:
Item | Specification | Test Results |
Appearance | White or almost slightly powder | Complies |
Identification | Positive | Complies |
R-Enantiomer | ≤0.5% | 0.04% |
Individual impurity | ≤0.3% | 0.04% |
Total impurities | ≤0.5% | 0.05% |
Residue on ignition | ≤0.2% | 0.06% |
Heavy Metal | ≤10ppm | Complies |
Specific rotation | +125°~+141° | +138° |
Loss on drying | ≤0.5% | 0.02% |
Assay | ≥98.5% | 99.60% |
Conclusion | Meets the Requirements | |
6-(5-Chloro-2-pyridyl)-6,7-dihydro-7-hydroxy-5H-pyrrolo[3,4-b]pyrazin-5-one CAS: 43200-81-3
4-Methyl-1-piperazinecarbonyl chloride hydrochloride Cas 55112-42-0
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