niacinamide

n. The amide of niacin (nicotinic acid), called also nicotinamide. It was at one time called vitamin B₃, and can function to relieve nicotinic acid deficiency. Chemical formula C6H6N2O, chemically it is 3-pyridinecarboxamide.
Syn. -- nicotinic acid amide, nicotinamide. [ PJC ]