CN Patent

CN107540720B — 3α,7α-二羟基-6α-乙基-5β-胆烷酸晶型H及其制备方法和应用

Assigned to CHANGZHOU SIYAO PHARMACEUTICALS CO LTD · Expires 2021-03-02 · 5y expired

What this patent protects

本发明提供一种3α,7α‑二羟基‑6α‑乙基‑5β‑胆烷酸的新晶型，即晶型H，本发明还提供3α,7α‑二羟基‑6α‑乙基‑5β‑胆烷酸晶型H的制备方法。本发明公开的3α,7α‑二羟基‑6α‑乙基‑5β‑胆烷酸晶型H，不含结晶溶剂或水，具有良好的结晶形式，且稳定性好，不易吸潮，适合重结晶纯化，可有效除去杂质。

USPTO Abstract

本发明提供一种3α,7α‑二羟基‑6α‑乙基‑5β‑胆烷酸的新晶型，即晶型H，本发明还提供3α,7α‑二羟基‑6α‑乙基‑5β‑胆烷酸晶型H的制备方法。本发明公开的3α,7α‑二羟基‑6α‑乙基‑5β‑胆烷酸晶型H，不含结晶溶剂或水，具有良好的结晶形式，且稳定性好，不易吸潮，适合重结晶纯化，可有效除去杂质。

Drugs covered by this patent

Patent Metadata

Patent number
CN107540720B
Jurisdiction
CN
Classification
—
Expires
2021-03-02
Drug substance claim
No
Drug product claim
No
Assignee
CHANGZHOU SIYAO PHARMACEUTICALS 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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