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Vitamin A (retinol) molecule

Vitamin A (retinol) molecule

A614/0076

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Credit

DR MARK J. WINTER / SCIENCE PHOTO LIBRARY 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 spheres 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.

Release details

Model release not required. Property release not required.

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