vitamin d 2

Vitamin D2 (Calciferol) 来源于植物或膳食补充剂，能够用作维生素 D 的补充剂。

25-Hydroxy vitamin D2-d3 是 25-Hydroxy vitamin D2 的氘代化合物。

Ergosterol 是真菌中的主要固醇类，具有抗炎，抗氧化和抗增殖的作用。

Doxercalciferol (TSA 840) 是一种维生素 D2 类似物，是一种维生素 D 受体激活剂，能够阻碍肾病的进程。

Biotin (S)-sulfoxide is an inactive metabolite of the coenzyme biotin .1,2It has also been found inE. coliand is reduced by the biotin sulfoxide reduction system as a source of biotin.3 1.Denkel, L.A., Rhen, M., and Bange, F.-C.Biotin sulfoxide reductase contributes to oxidative stress tolerance and virulence in Salmonella enterica serovar TyphimuriumMicrobiology (Reading)159(Pt 7)1447-1458(2013) 2.Carling, R.S., and Turner, C.Methods for assessment of biotin (Vitamin B7)Laboratory assessment of vitamin status193-217(2019) 3.del Campillo-Campbell, A., Dykhuizen, D., and Clearly, P.P.Enzymic reduction of d-biotin d-sulfoxide to d-biotinMethods Enzymol.62379-385(1979)

2-O-β-D-Glucopyranosyl-L-ascorbic acid (AA-2βG), isolated from Lycium Fruit, is a stable vitamin C analog with anti-tumor activity.

VDR agonist 1 (compound 28) 是一种非甾体类维生素 D 受体 (VDR)的激动剂， 在MCF-7 细胞中测得其IC50值为 690 nM。VDR agonist 1 通过上调 p21 和 p27 的表达来抑制细胞周期，通过增加 BAX 的表达来促进细胞凋亡，降低 Bcl-2 的表达，具有治疗乳腺癌的潜力。

3-O-(2-Aminoethyl)-25-hydroxyvitamin D3 is a derivative of Vitamin D3.

Tributyrin (Glyceryl tributyrate) 是一种中性短链脂肪酸甘油三酯，是一种稳定且吸收迅速的丁酸前药。 它通过生物膜扩散并被细胞内脂肪酶代谢，在体内将有效的丁酸直接释放到细胞中，有抗增殖、促凋亡和诱导分化作用。

Osteocalcin (1-49) is a non-collagenous peptide that is secreted by osteoblasts and odontoblasts and comprises 1-2% of the total protein in bone. Secretion of osteocalcin (1-49) is stimulated by 1,25-dihydroxy vitamin D and plasma levels increase in diseases that induce dysregulated bone turnover such as osteoporosis, Paget's disease, and primary hyperparathyroidism. Osteocalcin (1-49) is positively correlated with insulin sensitivity and negatively correlated with high blood glucose levels in women. In vitro, osteocalcin induces chemotaxis of MDA-MB-231 breast cancer cells, human peripheral blood monocytes, and rat osteosarcoma cells with osteoblast-like characteristics. It is also expressed by vascular smooth muscle cells (VSMCs) displaying an osteoblast-like phenotype and has been positively associated with calcification of aortic tissue and heart valves in humans.

TEI-9648, a Vitamin D3 Lactone analogue, is a potent and specific vitamin D receptor (VDR) antagonist. TEI-9648 inhibits VDR/VDRE-mediated genomic actions of 1α,25(OH)2D3. TEI-9648 also inhibits HL-60 cell differentiation induced by of 1α,25(OH)2D3. TEI-9648 has the potential for bone metabolism research[1][2]. TEI-9648 (10-1000 nM) dose-dependently blocks the reciprocal changes of CD11b and CD71 expression associated with HL-60 cell differentiation induced by 1α,25(OH)2D3[1]. TEI-9648 has consistently weaker suppressive effect than TEI-9647[1]. TEI-9648 can not induce cell differentiation even after treatment at 1 μM in HL-60 cell[1]. TEI-9648 alone can not induce activation of NBT-reducing activity or α-NB esterase activity. In contrast, TEI-9648 markedly suppresses the up-regulation induced by 1α,25(OH)2D3 (0.1 nM) in HL-60 cells[1]. [1]. Miura D, et al. Antagonistic action of novel 1α,25-dihydroxyvitamin D3-26, 23-lactone analogs on differentiation of human leukemia cells (HL-60) induced by 1α,25-dihydroxyvitamin D3. J Biol Chem. 1999 Jun 4;274(23):16392-9. [2]. Kazuya Takenouchi, et al. Synthesis and structure-activity relationships of TEI-9647 derivatives as Vitamin D3 antagonists. J Steroid Biochem Mol Biol. 2004 May;89-90(1-5):31-4.

Pyrocholecalciferol 一种维生素 D 类似物，由 7-脱氢胆固醇 (7-DHC) 的光化学转化产生。

2MD是一种口服活性维生素D类似物，能刺激骨膜骨形成并减少小梁骨吸收，从而恢复小梁和皮质骨的质量与强度。在非人灵长类动物研究中，2MD还可以调节(IOP)相关基因，降低眼压。

VDR agonist 2（化合物16i）作为VDR（vitamin D receptor）激动剂，能有效抑制TGF-β1诱导的肝星状细胞（HSC）活化，并在体外和体内展现出显著的抗肝纤维化效果。

Vitamin B15 (Pangamic Acid) hemicalcium 是一种自然存在于植物种子中的化合物，具有促进细胞呼吸的作用。它包含了D-葡萄糖基二甲基氨基乙酸，并可作为免疫校正剂。Vitamin B15 hemicalcium 在多种疾病研究中有应用。