EP4299563A2 — Combination comprising a stable crystal of a 4-oxoquinoline compound
Assigned to Japan Tobacco Inc · Expires 2024-01-03 · 2y expired
What this patent protects
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 an…
USPTO Abstract
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 2θ(°) as measured by powder X-ray diffractometry. The crystal of the present invention is superior in physical and chemical stability.
Drugs covered by this patent
- Vitekta (ELVITEGRAVIR) · Gilead Sciences
Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.
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