发明申请
US20130345465A1 PROCESS FOR THE PREPARATION OF RETIGABINE 有权
制剂的制备方法

PROCESS FOR THE PREPARATION OF RETIGABINE
摘要:
This invention relates to a novel chemical process for the synthesis of 2-ethyoxycarbonylamino-5-(4-fluorobenzylamino)-nitrobenzene and its use in the preparation of 2-amino-4-(4-fluorobenzylamino)-1-ethoxycarbonylaminobenzene (retigabine/ezogabine) and its polymorphic forms thereof.
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