Reversed-Phase High-Performance Liquid Chromatography and High-Performance Thin-layer Liquid Chromatography Methods for Simultaneous Determination of Theophylline, Guaifenesin and Guaifenesin Impurity (Guaiacol) in Their Bulk Powders and in Dosage Form
2018 ◽
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pp. 846-852
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2020 ◽
Vol 33
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pp. 149-160
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1987 ◽
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pp. 57-66
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2008 ◽
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pp. 358-361
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2008 ◽
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pp. 763-765
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1990 ◽
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pp. 351-359
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