Piperazine derivative or its salt, process for producing the same and
申请人:Toyama Chemical Co., Ltd.
公开号:US04948796A1
公开(公告)日:1990-08-14
A piperazine derivative represented by the following formula or a salt thereof: ##STR1## which is useful for curing cerebro-vascular disease and post-cerebro-vascular disease.