Sensitive spectrophotometric methods for the determination of ascorbic acid

Hiriyanna, S. G. and Basavaiah, K. and Sreedhar, K. (2008) Sensitive spectrophotometric methods for the determination of ascorbic acid. E-Journal of Chemistry, 5 (1). pp. 68-73. ISSN 2090-9810

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One unknown impurity in azoxystrobin bulk material at a level 0.15% was detected by a gradient reverse phase high performance liquid chromatography (HPLC). This impurity was isolated from a crude sample of azoxystrobin using reverse phase preparative LC. The impurity isolated by preparative LC was characterized by NMR, MS experimental data. Based on the results obtained from different spectroscopic experiments, these impurity was characterized as methyl 2-(2- (6- (2-cyanophenoxy)-2-((4-(2-cyanophenoxy)-6- (2- (1, 3-dimethoxy-3-oxoprop-l-en-2-yl)phenoxy) pyrimidin-5-yl) methyl)pyrimidin-4-yloxy)phenyl)-3-methoxyacrylate. Formation of this impurity is also discussed.

Item Type: Article
Subjects: C Chemical Science > Chemistry
Divisions: Department of > Chemistry
Depositing User: Manjula P Library Assistant
Date Deposited: 30 Aug 2019 07:40
Last Modified: 30 Aug 2019 07:40

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