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- W2774395883 abstract "Abstract A rapid, specific, and precise high-performance liquid chromatographic method is described for the simultaneous analysis of propantheline bromide and its hydrolysis product, xanthene-9-carboxylic acid. Reversed-phase chromatography was conducted using a mobile phase of 40:60, acetonitrile–0.05 M phosphate buffer (pH 2.5) delivered at 2 ml/min. Detection was at 254 nm. Methantheline bromide (internal standard), propantheline bromide, and xanthene-9-carboxylic acid gave retention times of 4.1, 5.4, and 8.3 min, respectively. Within-day, between-day, and total precision ( CV ) for assay of 15 mg/10 ml propantheline bromide are 1.2, 1.1, and 1.6%, respectively ( n = 20). Similar precision was obtained for xanthene-9-carboxylic acid. The limit of detection was 2 ng. The assay is useful for routine quality assurance of propantheline in dosage forms and for stability and kinetic studies." @default.
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- W2774395883 date "1982-01-01" @default.
- W2774395883 modified "2023-09-28" @default.
- W2774395883 title "A new method for assaying propantheline and its degradation product, xanthene-9- carboxylic acid using high performance liquid chromatography" @default.
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