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Molecules 2017, 22(9), 1517;

The Application of Quantitative 1H-NMR for the Determination of Orlistat in Tablets

State Key Laboratory for Bioactive Substances and Functions of Natural Medicines and Beijing Key Laboratory of New Drug Mechanisms and Pharmacological Evaluation Study, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, No.1 Xiannongtan Street, Beijing 100050, China
Author to whom correspondence should be addressed.
Received: 7 August 2017 / Revised: 7 September 2017 / Accepted: 8 September 2017 / Published: 10 September 2017
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A quantitative nuclear magnetic resonance (qNMR) method to measure the content of Orlistat in tablets was studied and found to be efficient, accurate, reliable, and simple. In this paper, phloroglucinolanhydrous and dimethylsulfoxide-d6 (DMSO-d6) served as the internal standard and solvent, respectively. The qNMR methodology, including the linearity, range, the limit of detection (LOD) and quantification (LOQ), stability, precision, and accuracy, was validated seriatim, and the results were very favorable. The content determination results of three batches of Orlistat in tablets were almost identical upon comparing the qNMR method and the high-performance liquid chromatography (HPLC) method. The recommended method authentically compensated the deficiencies of the current HPLC method for determining Orlistat content, and proved to be a method complementary to traditional analysis for the purity measurement of Orlistat in some pharmaceutical preparations. View Full-Text
Keywords: qNMR; Orlistat; internal standard method; methodology validation qNMR; Orlistat; internal standard method; methodology validation

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Sun, S.; Jin, M.; Zhou, X.; Ni, J.; Jin, X.; Liu, H.; Wang, Y. The Application of Quantitative 1H-NMR for the Determination of Orlistat in Tablets. Molecules 2017, 22, 1517.

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