使用RP-HPLC技术开发和验证Levothyroxine软凝囊的测试方法
Nagaraju Katari1, J Subba Rao2, S Vidyadhara2
1Department of Pharmaceutical Analysis, Acharya Nagarjuna University, Guntur, Andhra Pradesh, India.
Biomedical chromatography : BMC
|December 30, 2025
概括
一种新的逆相高性能液体染色学 (RP-HPLC) 方法准确量化了囊中的甲. 这种验证的测定确保了药物的质量,并符合所有强度的监管标准.
科学领域:
- 分析化学 分析化学
- 药品分析 药品分析
背景情况:
- 莱沃甲状腺素是治疗甲状腺功能低下症的关键药物.
- 在剂型中精确量化levothyroxine对于患者的安全性和治疗疗效至关重要.
- 现有的分析方法可能缺乏全面质量控制所需的特异性或敏感性.
研究的目的:
- 开发和验证一个强大的,精确的,和稳定性指示的逆相高性能液态染色学 (RP-HPLC) 方法,用于levothyroxine.
- 为了确保该方法对所有已知杂质的特异性,这些杂质列在levothyroxine药物物质专著中.
- 为了建立一个单一的,敏感的方法,在广泛的甲素囊强度范围内进行测定.
主要方法:
- 在RP-HPLC中使用60°C的InertSustain AQ C18柱 (250 × 4.6 mm, 5 μm)
- 一个梯度移动相,由酸盐缓冲剂和酸乙烯基组成,可在225nm检测.
- 方法验证包括线性,精度,LOD,LOQ,特异性,强度和稳定性指示能力.
主要成果:
- 该方法在验证范围中显示出出色的线性 (r2 > 0.999).
- 观察到高精度,标准的%RSD值为0.2%,样本为0.8%.
- 该方法证明对所有14种已知的杂质都具有特异性,LOD为0.05 ppm,LOQ为0.1 ppm.
结论:
- 成功开发了一种验证的,稳定性指标的RP-HPLC方法,用于软凝囊中的levothyroxine.
- 该方法是准确的,精确的,具体的,强大的,适合常规质量控制和监管提交.
- 这种分析方法确保了利沃胺囊在所有市场强度的质量和安全性.
相关概念视频
High-Performance Liquid Chromatography: Introduction
High-performance liquid chromatography(HPLC), formerly referred to as High-pressure liquid chromatography, is a powerful technique used to separate, identify, and quantify components in complex mixtures. The term "high pressure" refers to using high pressure to push the liquid mobile phase through the tightly packed columns.
In HPLC, two phases play a critical role in the separation process:
In HPLC, two phases play a critical role in the separation process:
High-Performance Liquid Chromatography: Elution Process
In High-Performance Liquid Chromatography (HPLC), the elution process is critical to the separation of analytes and the quality of chromatographic results. Elution describes how compounds move through the column and separate based on their interactions with the mobile and stationary phases. This process determines the resolution, peak shape, and retention times in the chromatogram, which are essential for identifying and quantifying components in complex mixtures. Understanding the elution...
High-Performance Liquid Chromatography: Instrumentation
High-performance liquid chromatography, or HPLC, is an analytical technique that separates liquid samples under high pressures. An HPLC instrument consists of glass bottles for storing solvents called mobile phase reservoirs. HPLC-grade solvents are used to maintain high purity, and the dissolved gases are removed using a degasser, such as a vacuum pumping system or sparging with helium. The solvents are then pumped into the analytical column using a screw-driven syringe or reciprocating pumps.

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