Here are some Iâve found on the subject of art and art history. â 1  Art is not what you see, but what you make others seeâ -Edgar Degas. â 2 Painting is poetry that is seen rather than felt, and poetry is painting that is felt rather than seenâ â Leonardo Da Vinci.
Other forms of vitamin B 3 include the corresponding amide and nicotinamide (niacinamide), where the carboxyl group has been replaced by a carboxamide group (CONH 2), as well as more complex amides and a variety of esters.
nicotinamide. niacinamide. nicotinamide-adenine dinucleotide (NAD) a coenzyme that is involved in many biochemical oxidation-reduction reactions. The symbols for the oxidized and reduced forms are NAD and NADH.nicotinamide-adenine dinucleotide phosphate (NADP) a coenzyme similar to nicotinamide-adenine dinucleotide but involved in fewer reactions. The symbols for the oxidized and reduced forms are NADP and NADPH.icotinamide. niacinamide. nicotinamide-adenine dinucleotide (NAD) a coenzyme that is involved in many biochemical oxidation-reduction reactions. The symbols for the oxidized and reduced forms are NAD and NADH.