Research Article
An Isocratic Method for Quantification of Valproic Acid and Its Related Impurities Using Ion Pair Reagent by Ultraperformance Liquid Chromatography
Table 2
Data for intermediate precision.
| | Area | | Injection | PA | 2-EPA | 2-IsoPPA | VPA |
| | SET 01 | 210954.0 | 623938.5 | 629944.0 | 813293.0 | | SET 02 | 208416.5 | 616521.5 | 623969.5 | 799387.0 | | SET 03 | 208213.0 | 617099.5 | 621781.0 | 800629.0 | | SET 04 | 208638.5 | 615928.5 | 622960.5 | 799801.5 | | SET 05 | 210549.5 | 626428.0 | 631619.5 | 813999.0 | | SET 06 | 211420.5 | 636014.5 | 636014.5 | 818790.0 | | Mean | 209698.7 | 622655.1 | 627714.8 | 807649.9 | | Std dev | 1431.1 | 7849.7 | 5673.5 | 8665.1 | | % CV | 0.7 | 1.3 | 0.9 | 1.1 |
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