一种吡咯喹啉醌二钠盐的分离纯化方法

After removing large particulate impurities, adjusting pH, treating with filter aids and adsorbents, nanofiltration, and salting out, semi-continuous crystallization is carried out using a specific crystal form of pyrroloquinoline quinone disodium salt, crystal form A, as a seed crystal. This solves the problem of obtaining high-purity pyrroloquinoline quinone disodium salt in existing technologies and achieves a highly efficient and environmentally friendly purification process.

CN119431372BActive Publication Date: 2026-07-17INNER MONGOLIA KINGDOMWAY PHARMA LTD +2

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INNER MONGOLIA KINGDOMWAY PHARMA LTD
Filing Date
2025-01-08
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies are insufficient to efficiently obtain high-purity pyrroloquinoline quinone disodium salt, and traditional methods involve numerous steps, high energy consumption, and high wastewater treatment costs, which cannot meet the demands of the high-end market.

Method used

After removing large particulate impurities, adjusting pH, treating with filter aids and adsorbents, nanofiltration and salting out, semi-continuous crystallization was carried out using a specific crystal form of pyrroloquinoline quinone disodium salt, crystal form A, as a seed crystal. The crystallization process was optimized by combining a gradient cooling crystallization method.

Benefits of technology

It improves the purity and crystallization efficiency of pyrroloquinoline quinone disodium salt, simplifies the process, reduces energy consumption and wastewater discharge, and reduces environmental pollution and energy waste.

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Abstract

本发明属于化合物提纯技术领域,涉及一种吡咯喹啉醌二钠盐的分离纯化方法,包括:将吡咯喹啉醌发酵液依次进行大颗粒杂质去除、pH值调节、助滤剂及吸附剂处理、纳滤及盐析之后,将所得盐析物以具有特定特征峰的吡咯喹啉醌二钠盐晶型A作为晶种进行结晶,所述吡咯喹啉醌二钠盐晶型A采用Cu‑Kα放射线辐射得到的X射线衍射图谱在以下2θ角度具有特征峰:7.0°±0.2°、8.4°±0.2°、9.0°±0.2°、17.8°±0.2°、19.2°±0.2°、20.8°±0.2°、23.4°±0.2°、26.9°±0.2°、28.2°±0.2°、29.2°±0.2°。采用以上方法可以有效提高吡咯喹啉醌二钠盐的纯度。
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