Benzopyran derivatives as potassium channel openers

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...

Reexamination Certificate

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C549S399000, C549S400000, C549S401000, C549S403000, C549S404000

Reexamination Certificate

active

07838553

ABSTRACT:
The present invention is directed to novel benzopyran derivatives, pharmaceutical compositions containing them and their use in the treatment of disorders related to potassium channel.

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