通过液体染色学-高分辨率质谱法识别和量化林卡洛中的结构相关杂物
Jinlan Cheng1,2, Tianji Zhang2, Xinling Cui2
1School of Pharmacy, China Medical University, Shenyang, China.
Rapid communications in mass spectrometry : RCM
|January 15, 2026
概括
一种新的液态染色学高分辨率质谱法 (LC-HRMS) 方法检测了利纳克洛提德中的杂质,这是一种治疗便秘性易怒肠综合征 (IBS-C) 的药物. 这种敏感的方法确保了治疗的质量和安全性.
科学领域:
- 分析化学 分析化学
- 制药科学 制药科学
- 生物化学 生化学
背景情况:
- 林卡洛提德是一种重要的治疗药物,用于治疗便秘性易怒肠综合征 (IBS-C).
- 结构相关的杂质可以在林纳克洛提德的合成,储存或运输过程中出现,可能会损害药物的质量和患者的安全.
- 敏感的检测方法对于确保利纳克洛提德等治疗药物的纯度和有效性至关重要.
研究的目的:
- 开发和验证一种高度敏感的分析方法,用于识别和量化林纳克洛提德中结构相关的杂物.
- 应用开发的方法来表征来自不同制造商的林纳克洛样本中的杂质.
- 通过准确的杂质分析来提高治疗药物的质量控制策略.
主要方法:
- 开发一种液体染色学高分辨率质谱法 (LC-HRMS) 方法.
- 使用Orbitrap质谱仪与正离子模式中的电喷射电离源 (ESI) 直接分析利纳克洛提德样本.
- 利用双重质谱与碰撞诱导解离和高质量精度用于杂质的识别和量化.
主要成果:
- 通过LC-HRMS方法,成功地在林纳克洛样本中的杂物进行了表征.
- 在制造商A的林纳克洛中,[Des-Tyr14]-林纳克洛量化为0.453 mg/g.
- 制造商B的利纳克洛含有[Des-Tyr 14]-利纳克洛 (0.768毫克/克) 和[endo-Ala 9]-利纳克洛 (0.555毫克/克).
结论:
- 开发的LC-HRMS方法有效地解决了在林纳克洛提德中检测结构相关的杂质的挑战.
- 该方法在特征特定杂质的能力为制药制造质量控制提供了显著的进步.
- 这种分析方法为确保利纳克洛和类似的疗法的安全性和质量提供了有价值的工具.
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