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Other forms of vitamin B 3 include the corresponding amide and nicotinamide (niacinamide), where the carboxyl group has been replaced by a carboxamide group (CONH 2), as well as more complex amides and a variety of esters.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, (ni-kÉ-tÄ-nÉ-mÄ«d) also known as niacinamide and nicotinic amide, is the amide of nicotinic acid (vitamin B 3 / niacin). Nicotinamide is a water-soluble vitamin and is part of the vitamin B group.hus nicotinamide does not reduce cholesterol or cause flushing, although nicotinamide may be toxic to the liver at doses exceeding 3 g/day for adults.