STABLE CRYSTAL OF 4-OXOQUINOLINE COMPOUND

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专利权人:

Japan Tobacco Inc.

发明人:

Ando, Koji,Satoh, Motohide,Motomura, Takahisa,Matsuda, Takashi,Kondo, Kentaro,Matsuda, Koji,Miyake, Shuji,Uehara, Hideto

申请号：

NO20065790

公开号：

NO339223B1

申请日:

2006.12.14

申请国别(地区):

NO

年份:

2016

代理人:

摘要：

The present invention provides a crystal of 6-(3-chloro-2-fluorobenzyl)-1-((S)-1-hydroxymethyl-2-methylpropyl]-7-methoxy-4-oxo-1,4-dihydroquinoline-3-carboxylic acid, which shows a particular powder X-ray diffraction pattern of a characteristic diffraction peaks at diffraction angles 2¸(°) as measured by powder X-ray diffractometry. The crystal of the present invention is superior in physical and chemical stability.

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