Simultaneous high-pressure liquid chromatographic determination of niacin and niacinamide in multivitamin preparations: Reversed-phase, ion-pairing approach
โ Scribed by S. Paul Sood; D. P. Wittmer; S. A. Ismaiel; W. G. Haney
- Publisher
- John Wiley and Sons
- Year
- 1977
- Tongue
- English
- Weight
- 334 KB
- Volume
- 66
- Category
- Article
- ISSN
- 0022-3549
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๐ SIMILAR VOLUMES
Compounds IVb-IVg were prepared similarly from I11 and the appropriate alcohols (Table I). p-Chlorophenyl Benzo[ b]-3-methyl-2-furancarbamate (1Vb)-A solution of I11 (2.01 g, 0.01 mole) and p-chlorophenol(l.28 g, 0.01 mole) in 30 ml of dry benzene was refluxed for 4 hr. The solvent was evaporated,
A high-pressure liquid chromatographic assay was developed for the determination of four water-soluble vitamins: niacinamide, pyridoxine, thiamine, and riboflavin. The four vitamins are assayed simultaneously in multivitamin products not containing minerals. Thiamine currently is not quantitated in