cholecalciferol, colecalciferol, vitamin d3, c27h44o molecule. structural chemical formula on the dark blue background

atom atomic blue c27h44o calcifediol calciferol calcitriol carbon chemical chemistry cholecalciferol colecalciferol compound dark deficiency ergocalciferol ergosterol formula hydrogen hypervitaminosis illustration medical molecular molecule nutrient organic oxygen rickets schematic secosteroid skin steroid structural structure sunlight supplement supplementation toxiferol vector vitamin vitamine white