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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1002/mrc.4665
|2 doi
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|a pubmed24n0919.xml
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|a eng
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|a Yu, Chen
|e verfasserin
|4 aut
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|a Quantitative determination and validation of octreotide acetate using 1 H-NMR spectroscopy with internal standard method
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|c 2018
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 11.04.2018
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|a Date Revised 11.04.2018
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2017 John Wiley & Sons, Ltd.
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|a Quantitative nuclear magnetic resonance (qNMR) is a well-established technique in quantitative analysis. We presented a validated 1 H-qNMR method for assay of octreotide acetate, a kind of cyclic octopeptide. Deuterium oxide was used to remove the undesired exchangeable peaks, which was referred to as proton exchange, in order to make the quantitative signals isolated in the crowded spectrum of the peptide and ensure precise quantitative analysis. Gemcitabine hydrochloride was chosen as the suitable internal standard. Experimental conditions, including relaxation delay time, the numbers of scans, and pulse angle, were optimized first. Then method validation was carried out in terms of selectivity, stability, linearity, precision, and robustness. The assay result was compared with that by means of high performance liquid chromatography, which is provided by Chinese Pharmacopoeia. The statistical F test, Student's t test, and nonparametric test at 95% confidence level indicate that there was no significant difference between these two methods. qNMR is a simple and accurate quantitative tool with no need for specific corresponding reference standards. It has the potential of the quantitative analysis of other peptide drugs and standardization of the corresponding reference standards
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|a Journal Article
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|a 1H
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|a assay
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|a gemcitabine hydrochloride
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|a octreotide acetate
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|a peptide drugs
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|a quantitative nuclear magnetic resonance
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|a Deuterium Oxide
|2 NLM
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|a J65BV539M3
|2 NLM
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|a Octreotide
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| 650 |
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| 700 |
1 |
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|a Zhang, Qian
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| 700 |
1 |
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|a Xu, Peng-Yao
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Bai, Yin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Shen, Wen-Bin
|e verfasserin
|4 aut
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| 700 |
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|a Di, Bin
|e verfasserin
|4 aut
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| 700 |
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|a Su, Meng-Xiang
|e verfasserin
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|t Magnetic resonance in chemistry : MRC
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|g 56(2018), 1 vom: 27. Jan., Seite 37-45
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