Chemical formula of vitamin D2 (molecular structure 3D schematic diagram)
Vitamin D2, chemically known as ergocalciferol, is an open-loop steroid formed by the breaking of chemical bonds in steroids under photochemical action, especially through the action of ultraviolet light and ergosterol.
Chemical formula of vitamin B1 (molecular structure 3D schematic diagram)
Vitamin B1 (VB1), also known as thiamine, is the earliest water-soluble vitamin purified by humans. Its chemical name is 3- [(4-amino-2-methyl-5-pyrimidinyl) - methyl] -5- (2-hydroxyethyl) -4-methylthiazolium chloride, which has the function of maintaining normal glucose metabolism.
Chemical formula of vitamin A (molecular structure 3D schematic diagram)
Vitamin A is a fat soluble vitamin, an organic compound with the chemical formula C20H30O. It is stable to heat, acid, and alkali, and is easily oxidized. Ultraviolet radiation can promote its oxidative damage. Vitamin A includes A1 and A2, with A1 being retinol. Vitamin A2, also known as 3-dehydroretinol, has a physiological activity that is 40% of that of vitamin A1.
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