Zopiclone Pharmaceutical Intermediates II CAS 43200-81-3 Intermediate II of Eszopiclone
Pharmaceutical Intermediate II of Zopiclone CAS 43200-81-3 (not Zopiclone , for making Zopiclone )
Pharmaceutical Intermediate II of Zopiclone
Chemical Name: 6-(5-Chloro-2-pyridyl)-6,7-dihydro-7-hydroxy-5H-pyrrolo[3,4-b]pyrazin-5-one
CAS: 43200-81-3
MF: C11H7ClN4O2
MW: 262.65
EINECS: 256-139-4
Chemical Properties: Light Yellow Crystalline Powder
Melting point: 240.5-241.50C
Product Categories: Aromatics Compounds;Aromatics;Heterocycles;Intermediates & Fine Chemicals;Pharmaceuticals
Uses: Eszopiclone intermediate, Eszopiclone Impurity B.
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Product name
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Pharmaceutical Intermediates II of Zopiclone
6-(5-Chloro-2-pyridyl)-6,7-dihydro-7-hydroxy-5H-pyrrolo[3,4-b]pyrazin-5-one
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CAS
CAS No.
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43200-81-3
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Outer Packing
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25kg/
25KG/ cardboard drum
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Production date
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2017-03-10
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Shelf life
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2019-03-09
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Standard adopted
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Enterprise standards
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Items of analysis
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Specification
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Results
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Appearance
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Yellow or light yellow crystalline powder
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Light yellow crystalline powder
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Melting point
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≥230ºC
≥230ºC
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236.3ºC
236.3ºC
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Loss oa drying
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≤0.5%
≤0.5%
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0.10%
0.10%
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Residue on ignition
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≤0.2%
≤0.2%
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0.11%
0.11%
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Heavy metals
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≤20ppm
≤20ppm
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<20ppm
<20ppm
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Assay
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≥98.0%
≥98.0%
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99.9%
99.9%
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Conclusion
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Qualified
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