CN Patent

CN113318075B — 一种乙酰半胱氨酸溶液及其制备方法

Assigned to Sichuan Pu Et Pharmaceutical Co ltd · Expires 2022-09-13 · 4y expired

What this patent protects

本发明提供了一种乙酰半胱氨酸溶液，溶液中pH值3.0‑5.5，且不含抗氧化剂、金属螯合剂。本发明提供的上述溶液中，通过调整pH值、降低顶空残氧等手段，使得乙酰半胱氨酸溶液中，硫化氢含量低于50ppm，杂质E和杂质C总量低于1％。

USPTO Abstract

本发明提供了一种乙酰半胱氨酸溶液，溶液中pH值3.0‑5.5，且不含抗氧化剂、金属螯合剂。本发明提供的上述溶液中，通过调整pH值、降低顶空残氧等手段，使得乙酰半胱氨酸溶液中，硫化氢含量低于50ppm，杂质E和杂质C总量低于1％。

Drugs covered by this patent

Patent Metadata

Patent number
CN113318075B
Jurisdiction
CN
Classification
—
Expires
2022-09-13
Drug substance claim
No
Drug product claim
No
Assignee
Sichuan Pu Et Pharmaceutical 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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