Research Article

Quantification of Niacin and Its Metabolite Nicotinuric Acid in Human Plasma by LC-MS/MS: Application to a Clinical Trial of a Fixed Dose Combination Tablet of Niacin Extended-Release/Simvastatin (500 mg/10 mg) in Healthy Chinese Volunteers

Figure 1

Product ion mass spectra of the deprotonated molecules of NA (a), NUA (b), and 5-FU (c).
(a)
(b)
(c)