Overview
Hydroxyvitamin D, or calcidiol, is a critical intermediate in the vitamin D metabolic pathway. It is formed in the liver through the hydroxylation of vitamin D3 (cholecalciferol) and is subsequently converted in the kidneys to the active form, calcitriol. This compound plays a vital role in maintaining calcium and phosphate balance, which is essential for bone health and neuromuscular function. Hydroxyvitamin D is widely used in clinical settings to evaluate vitamin D status, as its serum levels reflect the body's vitamin D stores. Deficiencies in hydroxyvitamin D can lead to conditions such as rickets in children and osteomalacia in adults. Supplementation and fortified foods are common strategies to address such deficiencies.
Physical and Chemical Properties
Hydroxyvitamin D is a sterol derivative with a molecular weight of 400.64 g/mol. It appears as a white to off-white crystalline powder and is soluble in organic solvents like ethanol and methanol but insoluble in water. The compound has a melting point of approximately 80-85°C and is sensitive to light and oxidation, requiring careful storage conditions. Its stability is highly dependent on environmental factors, making it essential to store hydroxyvitamin D at -20°C in airtight containers protected from light. These properties are critical for ensuring the compound's efficacy in pharmaceutical and diagnostic applications.
Main Applications
Hydroxyvitamin D is primarily used in clinical diagnostics to assess vitamin D status. Blood tests measuring 25(OH)D levels are the gold standard for diagnosing vitamin D deficiency or insufficiency. This compound is also used in the formulation of vitamin D supplements and prescription medications aimed at treating or preventing deficiency-related disorders. In addition to its medical uses, hydroxyvitamin D is employed in research settings to study vitamin D metabolism and its role in various physiological processes. Its applications extend to the development of fortified foods and beverages designed to enhance public health.
Safety and Storage
Hydroxyvitamin D should be handled with care to avoid inhalation or direct contact, which can cause irritation. Personal protective equipment, such as gloves and goggles, is recommended when working with this compound. Proper storage is crucial to maintain its stability and efficacy. The compound must be stored at -20°C in airtight containers, protected from light and moisture. Exposure to adverse conditions can lead to degradation, reducing its effectiveness in clinical and pharmaceutical applications. Proper labeling and segregation from incompatible materials are also essential safety measures.
B2B Procurement Guide
When procuring hydroxyvitamin D, it is essential to verify the compound's purity and CAS number to ensure you are receiving the correct product. Reputable suppliers should provide certificates of analysis (CoA) detailing purity levels and potential contaminants. Consider the storage and handling requirements during transport to prevent degradation. Bulk purchases may offer cost advantages, but ensure that your storage facilities can accommodate the necessary conditions. Comparing prices and lead times from multiple suppliers can help optimize procurement efficiency.