CN Patent

CN101163679A — 制备超纯4-甲基吡唑的方法

Assigned to Orphan Medical Inc · Expires 2008-04-16 · 18y expired

What this patent protects

公开了一种超纯的4－甲基吡唑，其含有低于0.1％的吡唑且含有各低于10ppm的肼和硝基苯甲醛。该超纯的4－甲基吡唑是由一种新方法制备的，以使乙基乙烯基醚的存在量低于0.01％。

USPTO Abstract

公开了一种超纯的4－甲基吡唑，其含有低于0.1％的吡唑且含有各低于10ppm的肼和硝基苯甲醛。该超纯的4－甲基吡唑是由一种新方法制备的，以使乙基乙烯基醚的存在量低于0.01％。

Drugs covered by this patent

Patent Metadata

Patent number
CN101163679A
Jurisdiction
CN
Classification
—
Expires
2008-04-16
Drug substance claim
No
Drug product claim
No
Assignee
Orphan Medical Inc
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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