Stable crystal of 4-oxoquinoline compound

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专利权人:

JAPAN TOBACCO; INC.

发明人:

SATOH, MOTOHIDE,MOTOMURA, TAKAHISA,MATSUDA, TAKASHI,KONDO, KENTARO,ANDO, KOJI,MATSUDA, KOJI,MIYAKE, SHUJI,UEHARA, HIDETO

申请号：

DK05726243

公开号：

DK1636190T3

申请日:

2005.05.19

申请国别(地区):

DK

年份:

2012

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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