Intermediate II of Eszopiclone Pharmaceutical Intermediates Zopiclone II CAS 43200-81-3

Intermediate II of Eszopiclone Pharmaceutical Intermediates Zopiclone II CAS 43200-81-3

Intermediate II of Eszopiclone Pharmaceutical Intermediates Zopiclone II CAS 43200-81-3

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.

Product name
Pharmaceutical Intermediates II of Zopiclone
6-(5-Chloro-2-pyridyl)-6,7-dihydro-7-hydroxy-5H-pyrrolo[3,4-b]pyrazin-5-one
CAS
CAS No.
43200-81-3
Outer Packing
25kg/
25KG/ cardboard drum
Production date
2017-03-10
Shelf life
2019-03-09
Standard adopted
Enterprise standards
Items of analysis
Specification
Results
Appearance
Yellow or light yellow crystalline powder
Light yellow crystalline powder
Melting point
≥230ºC
≥230ºC
236.3ºC
236.3ºC
Loss oa drying
≤0.5%
≤0.5%
0.10%
0.10%
Residue on ignition
≤0.2%
≤0.2%
0.11%
0.11%
Heavy metals
≤20ppm
≤20ppm
<20ppm
<20ppm
Assay
≥98.0%
≥98.0%
99.9%
99.9%
Conclusion
Qualified

 

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