STABLE CRYSTAL OF 4-OXOQUINOLINE COMPOUND

Provision of a stabilized crystal of 6-(3-chloro-2-fluorobenzyl)-1-[(S)-1-hydroxymethyl-2-methylpropyl]-7-methoxy-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (compound A). A crystal of compound A, which shows a particular X-ray powder diffraction pattern of a characteristic diffraction peaks at dif...

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Hauptverfasser: MATSUDA, Koji, KONDO, Kentaro, ANDO, Koji, SATOH, Motohide, MOTOMURA, Takahisa, UEHARA, Hideto, MIYAKE, Shuji, MATSUDA, Takashi
Format: Patent
Sprache:eng
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Zusammenfassung:Provision of a stabilized crystal of 6-(3-chloro-2-fluorobenzyl)-1-[(S)-1-hydroxymethyl-2-methylpropyl]-7-methoxy-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (compound A). A crystal of compound A, which shows a particular X-ray powder diffraction pattern of a characteristic diffraction peaks at diffraction angles 2θ(°) as measured by X-ray powder diffractmetry.