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Direct Determination of Niacinamide in Multivitamin Preparations
Journal of Pharmaceutical Sciences, 1961Abstract A simple method for the direct determination of niacinamide in pharmaceutical preparations is described. The method involves the reaction of niacinamide in potassium dihydrogen phosphate with cyanogen bromide and barbituric acid. The resulting purple color has a maximum absorbance at 550 m μ . Niacin does not interfere in the reaction unless
O, PELLETIER, J A, CAMPBELL
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Polarographic assay of niacinamide in pharmaceutical preparations
Journal of Pharmaceutical Sciences, 1969A rapid polarographic determination of niacinamide pharmaceutical preparations had been developed and is compared with the Konig colorimetric assay using barbituric acid. The niacinamide is extracted from the sample using a combination column and liquid-liquid partition chromatography. The extracted niacinamide is determined in a supporting electrolyte
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Niacinamide transport through the blood-brain barrier
Neurochemical Research, 1987The unidirectional influx of niacinamide across cerebral capillaries, the anatomical locus of the blood-brain barrier, was measured with an in situ rat brain perfusion technique employing [14C]niacinamide. Niacinamide was transported rapidly across the blood-brain barrier by a system that was not saturable with 10 mM niacinamide in the perfusate ...
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Lonza niacinamide plant opens in China
Chemical & Engineering News Archive, 1999Lonza executives were exuberant in late September as the firm inaugurated its first venture in China, a plant making niacinamide, which is used in foods, feeds, and pharmaceuticals.
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NIACINAMIDE IN BROMIDE INTOXICATION
Southern Medical Journal, 1949R S, HARRIS, P S, DERIAN
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