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Other forms of vitamin B 3 include the corresponding amide and nicotinamide (niacinamide), where the carboxyl group has been replaced by a carboxamide group (CONH 2), as well as more complex amides and a variety of esters.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, also known as niacinamide or nicotinic acid amide, is the water-soluble, active form of vitamin B3.It has been increasingly studied for many different indications in the field of dermatology but more research is needed to clarify its value.icotinamide, also known as niacinamide or nicotinic acid amide, is the water-soluble, active form of vitamin B3.