what is Vitamin A ?

Vitamin A is a vitamin which is needed by the retina of the eye in the form of a specific metabolite, the light-absorbing molecule retinal.This molecule is absolutely necessary for both scotopic and color vision. Vitamin A also functions in a very different role, as an irreversibly oxidized form retinoic acid, which is an important hormone-like growth factor for epithelial and other cells.
CAS:11103-57-4
Molecular Formula: C20H30O
Molecular Weight: 286.46 g/mol