Niacin. Molecular model of niacin (C6.N.H5.O2), also known as vitamin B3 and nicotinic acid. Insufficient intake of this vitamin leads to a disease called pellagra. Atoms are represented as spheres and are colour-coded: carbon (grey), hydrogen (white), nitrogen (blue) and oxygen (red). Illustration. | |
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Crédit: | Science Photo Library / Laguna Design |
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