EP Patent

EP2447254A1 — Crystals

Assigned to Nippon Shinyaku Co Ltd · Expires 2012-05-02 · 14y expired

What this patent protects

[Problem] A main object of the present invention is to provide a novel crystal of 2-{4-[N-(5,6-diphenylpyrazin-2-yl)-N-isopropylamino]butyloxy}-N-(methylsulfonyl)acetamide (hereinafter referred to as "compound A"). [Means for Resolution] A Form-I crystal of co…

USPTO Abstract

[Problem] A main object of the present invention is to provide a novel crystal of 2-{4-[N-(5,6-diphenylpyrazin-2-yl)-N-isopropylamino]butyloxy}-N-(methylsulfonyl)acetamide (hereinafter referred to as "compound A"). [Means for Resolution] A Form-I crystal of compound A, showing diffraction peaks at 9.4 degrees, 9.8 degrees, 17.2 degrees and 19.4 degrees in the powder X-ray diffraction spectrum thereof. A Form-II crystal of compound A, showing diffraction peaks at 9.0 degrees, 12.9 degrees, 20.7 degrees and 22.6 degrees in the powder X-ray diffraction spectrum thereof. A Form-III crystal of compound A, showing diffraction peaks at 9.3 degrees, 9.7 degrees, 16.8 degrees, 20.6 degrees and 23.5 degrees in the powder X-ray diffraction spectrum thereof.

Drugs covered by this patent

Patent Metadata

Patent number
EP2447254A1
Jurisdiction
EP
Classification
—
Expires
2012-05-02
Drug substance claim
No
Drug product claim
No
Assignee
Nippon Shinyaku Co Ltd
Source
FDA Orange Book + USPTO grounding via Google Patents

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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