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  • Vitamin A (10,14,19,19,19,20,20,20-D8) (50 ppm BHT)(#494

Vitamin A (10,14,19,19,19,20,20,20-D8) (50 ppm BHT)(#494

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Vitamin A (10,14,19,19,19,20,20,20-D8)

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Vitamin A is a group of unsaturated nutritional organic compounds, that includes retinol, retinal, retinoic acid, and several provitamin A carotenoids, among which beta-carotene is the most important.

In foods of animal origin, the major form of vitamin A is an ester, primarily retinyl palmitate, which is converted to retinol in the small intestine. The retinol form functions as a storage form of the vitamin, and can be converted to and from its visually active aldehyde form, retinal.

The associated acid (retinoic acid), a metabolite that can be irreversibly synthesized from vitamin A, has only partial vitamin A activity, and does not function in the retina for the visual cycle. Retinoic acid is used for growth and cellular differentiation.

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