![Chemical structures of vitamin D 3 , D 2 , 25(OH)D and 1,25(OH) 2 D.... | Download Scientific Diagram Chemical structures of vitamin D 3 , D 2 , 25(OH)D and 1,25(OH) 2 D.... | Download Scientific Diagram](https://www.researchgate.net/publication/344692424/figure/fig1/AS:947281306079236@1602860871948/Chemical-structures-of-vitamin-D-3-D-2-25OHD-and-1-25OH-2-D-Structural.jpg)
Chemical structures of vitamin D 3 , D 2 , 25(OH)D and 1,25(OH) 2 D.... | Download Scientific Diagram
![Figure 1 from The C-3 epimer of 25-hydroxyvitamin D(3) is present in adult serum. | Semantic Scholar Figure 1 from The C-3 epimer of 25-hydroxyvitamin D(3) is present in adult serum. | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/613ee7841f1e67176f860f47c80c0d61a321c480/2-Figure1-1.png)
Figure 1 from The C-3 epimer of 25-hydroxyvitamin D(3) is present in adult serum. | Semantic Scholar
![Vitamin D 3 conversion to 25-hydroxyvitamin D in the liver mitochondria... | Download Scientific Diagram Vitamin D 3 conversion to 25-hydroxyvitamin D in the liver mitochondria... | Download Scientific Diagram](https://www.researchgate.net/publication/313459526/figure/fig2/AS:459511761772545@1486567549367/Vitamin-D-3-conversion-to-25-hydroxyvitamin-D-in-the-liver-mitochondria-by-vitamin-D.png)
Vitamin D 3 conversion to 25-hydroxyvitamin D in the liver mitochondria... | Download Scientific Diagram
![Ratio of 25(OH)D-to-24,25(OH)2D: A new test to confirm 24-hydroxylase (CYP24A1) deficiency as the cause of hypercalcemia - Mayo Clinic Ratio of 25(OH)D-to-24,25(OH)2D: A new test to confirm 24-hydroxylase (CYP24A1) deficiency as the cause of hypercalcemia - Mayo Clinic](https://www.mayoclinic.org/-/media/kcms/gbs/medical-professionals/images/2018/06/07/19/04/vitamind_fig1_lg.jpg)
Ratio of 25(OH)D-to-24,25(OH)2D: A new test to confirm 24-hydroxylase (CYP24A1) deficiency as the cause of hypercalcemia - Mayo Clinic
![Vitamin D (25OH) (Free) ELISA, KARF1991 (RUO) | Human Vitamin D Free Enzyme-linked Immune-sorbent Assay Kit IBL-America Vitamin D (25OH) (Free) ELISA, KARF1991 (RUO) | Human Vitamin D Free Enzyme-linked Immune-sorbent Assay Kit IBL-America](https://cdn11.bigcommerce.com/s-dpaty9ionu/images/stencil/1280x1280/products/5860/14179/Bone_Metabolism_RIA_Assays__15499.1661961325.jpg?c=2)
Vitamin D (25OH) (Free) ELISA, KARF1991 (RUO) | Human Vitamin D Free Enzyme-linked Immune-sorbent Assay Kit IBL-America
![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: Results of a systematic review and meta-analysis 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: Results of a systematic review and meta-analysis](https://www.medrxiv.org/content/medrxiv/early/2021/09/25/2021.09.22.21263977/F2.large.jpg)
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: Results of a systematic review and meta-analysis
![3-Epi-25-hydroxyvitamin D3 is a poor substrate for SULT2A1: Analysis of its 3-sulfate in cord plasma and recombinant human SULT2A1 incubate - ScienceDirect 3-Epi-25-hydroxyvitamin D3 is a poor substrate for SULT2A1: Analysis of its 3-sulfate in cord plasma and recombinant human SULT2A1 incubate - ScienceDirect](https://ars.els-cdn.com/content/image/1-s2.0-S0039128X20301215-ga1.jpg)
3-Epi-25-hydroxyvitamin D3 is a poor substrate for SULT2A1: Analysis of its 3-sulfate in cord plasma and recombinant human SULT2A1 incubate - ScienceDirect
![Epidermal pathways of vitamin D3 activation to produce 1,25(OH) 2 D3... | Download Scientific Diagram Epidermal pathways of vitamin D3 activation to produce 1,25(OH) 2 D3... | Download Scientific Diagram](https://www.researchgate.net/publication/328158506/figure/fig1/AS:679641853460485@1539050653904/Epidermal-pathways-of-vitamin-D3-activation-to-produce-1-25OH-2-D3-and-20-23OH-2-D3.png)
Epidermal pathways of vitamin D3 activation to produce 1,25(OH) 2 D3... | Download Scientific Diagram
![Overestimation of 3α- over 3β-25-Hydroxyvitamin D3 Levels in Serum: A Mechanistic Rationale for the Different Mass Spectral Properties of the Vitamin D Epimers | Journal of the American Society for Mass Spectrometry Overestimation of 3α- over 3β-25-Hydroxyvitamin D3 Levels in Serum: A Mechanistic Rationale for the Different Mass Spectral Properties of the Vitamin D Epimers | Journal of the American Society for Mass Spectrometry](https://pubs.acs.org/cms/10.1021/jasms.1c00054/asset/images/medium/js1c00054_0001.gif)
Overestimation of 3α- over 3β-25-Hydroxyvitamin D3 Levels in Serum: A Mechanistic Rationale for the Different Mass Spectral Properties of the Vitamin D Epimers | Journal of the American Society for Mass Spectrometry
![Chemical structures of vitamin D-2, vitamin D-3, 25-hydroxyvitamin D-2,... | Download Scientific Diagram Chemical structures of vitamin D-2, vitamin D-3, 25-hydroxyvitamin D-2,... | Download Scientific Diagram](https://www.researchgate.net/publication/236121729/figure/fig1/AS:393346230046724@1470792457224/Chemical-structures-of-vitamin-D-2-vitamin-D-3-25-hydroxyvitamin-D-2-and.png)
Chemical structures of vitamin D-2, vitamin D-3, 25-hydroxyvitamin D-2,... | Download Scientific Diagram
![Nutrients | Free Full-Text | 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: Results of a Nutrients | Free Full-Text | 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: Results of a](https://pub.mdpi-res.com/nutrients/nutrients-13-03596/article_deploy/html/images/nutrients-13-03596-g001-550.jpg?1634525745)
Nutrients | Free Full-Text | 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: Results of a
![1α,20S-Dihydroxyvitamin D3 Interacts with Vitamin D Receptor: Crystal Structure and Route of Chemical Synthesis | Scientific Reports 1α,20S-Dihydroxyvitamin D3 Interacts with Vitamin D Receptor: Crystal Structure and Route of Chemical Synthesis | Scientific Reports](https://media.springernature.com/full/springer-static/image/art%3A10.1038%2Fs41598-017-10917-7/MediaObjects/41598_2017_10917_Fig1_HTML.jpg)
1α,20S-Dihydroxyvitamin D3 Interacts with Vitamin D Receptor: Crystal Structure and Route of Chemical Synthesis | Scientific Reports
![Vitamin D3 metabolite ratio as an indicator of vitamin D status and its association with diabetes complications | BMC Endocrine Disorders | Full Text Vitamin D3 metabolite ratio as an indicator of vitamin D status and its association with diabetes complications | BMC Endocrine Disorders | Full Text](https://media.springernature.com/lw685/springer-static/image/art%3A10.1186%2Fs12902-020-00641-1/MediaObjects/12902_2020_641_Fig1_HTML.png)
Vitamin D3 metabolite ratio as an indicator of vitamin D status and its association with diabetes complications | BMC Endocrine Disorders | Full Text
![3-O-(2-Aminoethyl)-25-hydroxyvitamin D3 (25-Hydroxy Vitamin D3 3,3'-Aminopropyl Ether) | VD/VDR Chemical | MedChemExpress 3-O-(2-Aminoethyl)-25-hydroxyvitamin D3 (25-Hydroxy Vitamin D3 3,3'-Aminopropyl Ether) | VD/VDR Chemical | MedChemExpress](https://file.medchemexpress.com/product_pic/hy-15254.gif)