nicotinamide riboside (nr) molecule. stylized 2d renderings and conventional skeletal formula. precursor of nicotinamide adenine

nicotinamide mononucleotide riboside vitamin b3 niacin precursor nad pellagra ageing antiaging mitochondria energy nr nicotinamid life extension cow milk dyslipidemia cholesterol sirtuin molecule atoms atomic model molecular compound composition chemical chemistry bond structure formula circle ring line drawing skeletal flat icon stylized style