Vitamin A Reference Standard (USP grade powder) (51R-U716002)
Vitamin A Reference Standard (USP grade powder) chemical reference substance
|Form & Buffer||Supplied as a powder.|
|Biological Significance||Vitamin A is a vitamin that is needed by the retina of the eye in the form of a specific metabolite, the light-absorbing molecule retinal, that is absolutely necessary for both low-light (scotopic vision) and color vision. Vitamin A also functions in a very different role, as an irreversibly oxidized form of retinol known as retinoic acid, which is an important hormone-like growth factor for epithelial and other cells.|
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