Vitamin A (retinol) molecule

Vitamin A (retinol) molecule

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Credit: DR MARK J. WINTER/SCIENCE PHOTO LIBRARY

Caption: Vitamin A. Molecular model of the retinol form of vitamin A. Retinol is one of three forms of vitamin A; the other two are retinoic acid and retinal. The chemical formula for retinol is C20.H30.O. Atoms are represented as balls and are colour-coded: carbon (blue), hydrogen (gold) and oxygen (red). Retinol, obtained from the precursor beta-carotene that is found in fruit and vegetables, is found in animal products and is itself a precursor to retinal. Retinal is important for night vision. Vitamin A also maintains a healthy reproductive system and healthy skin and mucous membranes. Deficiencies in vitamin A can lead to slow growth and night blindness. Excessive doses can be toxic, causing aches and pains and in some extreme cases liver failure and death.

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Keywords: 1, ball and stick, ball-and-stick, biochemical, biochemistry, c20h30o, chemical, chemistry, compound, cut out, cut-out, cutout, fat-soluble, form, model, molecular, molecular model, molecule, nutrient, nutrition, one, organic, precursor molecule, retinol, single, structure, variant, vitamin, vitamin a

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