COVID-19 Mortality Risk Correlates Inversely with Vitamin D3 Status, and a Mortality Rate Close to Zero Could Theoretically Be Achieved at 50 ng/mL 25( OH)D3 : r/ScientificNutrition
23,25-Dihydroxyvitamin D3 is liberated as a major vitamin D3 metabolite in human urine after treatment with β-glucuronidase: Quantitative comparison with 24,25-dihydroxyvitamin D3 by LC/MS/MS - ScienceDirect
3-epi-25-hydroxy Vitamin D3 (3-epi-25(OH)D3, 3-epi-25-hydroxy Cholecalciferol, CAS Number: 73809-05-9) | Cayman Chemical