Product Description
Usage
:Vitamin D is a fat-soluble vitamin, also be regarded as a kind of role in calcium, phosphorus metabolic hormones precursor. It has close relationship with the sun, so also called the "sunshine vitamin".
AI Product Description
*The following content is generated by AI and is for reference only.
Vitamin D3, chemically known as cholecalciferol, is a fat-soluble secosteroid essential for human health. Its molecular formula is C27H44O, and it carries the CAS registry number 67-97-0. Unlike other forms of vitamin D, D3 is the endogenous form produced in the skin upon exposure to ultraviolet B radiation from sunlight, though it can also be obtained through dietary sources like fatty fish, egg yolks, and fortified foods.
The primary physiological role of Vitamin D3 involves regulating calcium and phosphorus homeostasis, which is critical for maintaining strong bones and teeth. It facilitates intestinal absorption of these minerals, preventing conditions such as rickets in children and osteomalacia or osteoporosis in adults. Beyond skeletal health, emerging research suggests significant roles in immune system modulation, reducing inflammation, and potentially lowering the risk of chronic diseases including cardiovascular disorders and certain cancers. The compound acts as a prohormone; once ingested or synthesized, it undergoes hydroxylation first in the liver to form 25-hydroxyvitamin D [25(OH)D], and subsequently in the kidneys to become the biologically active 1,25-dihydroxyvitamin D, which binds to nuclear receptors to regulate gene expression.
In industrial applications, high-purity Vitamin D3 is widely utilized in pharmaceutical formulations, nutritional supplements, and animal feed additives. In agriculture, it prevents metabolic bone diseases in livestock and poultry, ensuring optimal growth and productivity. Manufacturers produce D3 via photochemical irradiation of 7-dehydrocholesterol derived from lanolin or lichen sources, followed by purification processes to meet stringent quality standards. Deficiency remains a global public health concern, particularly in regions with limited sun exposure or among populations with darker skin tones, making supplementation a vital preventive strategy. Overall, Vitamin D3 stands as a cornerstone nutrient bridging nutrition, endocrinology, and preventative medicine, supporting both physical structure and systemic vitality across all life stages.