Process for the preparation of roflumilast

• 收藏
• 分享

专利权人:

Takeda GmbH

发明人:

Bernhard Kohl,Bernd Mueller,Walter Palosch

申请号：

US13860264

公开号：

US08618142B2

申请日:

2013.04.10

申请国别(地区):

US

年份:

2013

代理人:

摘要：

A composition comprising: roflumilast having a purity of greater than or equal to 99% by weight, and N-(3,5-dichloropyrid-4-yl)-3-cyclopropylmethoxy-4-hydroxybenzamide present (relative to roflumilast) in an amount greater than zero and less than 0.1% by weight.

来源网站：

中国工程科技知识中心

来源网址：

http://www.ckcest.cn/home/