**Vitamin D3 (Cholecalciferol) Product Introduction**
**Molecular Formula:** C₂₇H₄₄O
**CAS No.:** 67-97-0
**Uses:** Vitamin D3 is a fat-soluble nutrient essential for calcium absorption, bone health, and immune function. It prevents rickets in children and osteoporosis in adults. Widely used in dietary supplements, fortified foods (e.g., milk, cereals), and pharmaceuticals. Also supports mood regulation and cardiovascular health. Natural sources include sunlight exposure and fatty fish (e.g., salmon).
**Note:** Consult a healthcare provider for dosage guidance to avoid toxicity.
*(Character count: ~300)*
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