Figure 2From: Stability of methylnicotinate in aqueous solution as utilized in the 'niacin patch test'Analysis of methylnicotinate solutions by HPLC. Representative chromatograms are shown for (A) nicotinic acid standard, (B) 6-methyl nicotinate standard, (C) 6-methylnicotinate solution stored for 5 days at 4°C prior to analysis and (D) 6-methylnicotinate solution stored for 1062 days at 4°C prior to analysis.Back to article page