cfd5bd82_r_chemical_names_and_functions__Functions
[Vitamins] D [Chemical Names] vitamin D2 (ergocalciferol) and vitamin D3 (cholecalciferol) [Functions] 
it is a fat-soluble vitamin that helps the body absorb calcium. It is essential for the absorption of calcium into the bone and for normal bone growth. Vitamin D is known as the 'sunshine vitamin' because the body manufactures the vitamin after being exposed to sunshine
vitamins, their chemical names and functions
Functions