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|Title:||Optically active 5H-pyrrolo[3,4-b]pyrazine derivative, its preparation and pharmaceutical compositions containing it|
|Abstract:||Dextrorotatory isomer of 6-(5-chloro-2-pyridyl)-5-[(4-methyl-1-piperazinyl)carbonyloxy]-7-oxo-6,7-d ihydro-5H-pyrrolo[3,4-b]pyrazine, its preparation and pharmaceutical compositions containing it which are usable as tranquillizers and hypnotics.|
|Inventor(s):||Cotrel; Claude (Paris, FR), Roussel; Gerard (Soisy sur Seine, FR)|
|Assignee:||Sepracor Inc. (Marlborough, MA)|
Patent Claim Types:|
see list of patent claims
Field: Organic fine chemistry
Back Citations: 9th percentile
Forward Citations: 1st percentile
|Foriegn Application Priority Data|
|Foreign Country||Foreign Patent Number||Foreign Patent Date|
|France||91 00490||Jan 17, 1991|
|Country||Document Number||Estimated Expiration||Supplementary Protection Certificate||SPC Country||SPC Expiration|
| This preview shows a limited data set|
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Due to the complexity of determining patent expirations even in a single country, compounded by the diversity of global patent laws, it is advisable to have patent counsel verify freedom to operate.
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