Inecalcitol (TX 522) is the growth inhibitor of human breast cancer cells. Inecalcitol is a unique vitamin D3 analog with Kd of 0.53 nM.

Calcitriol (1,25-Dihydroxyvitamin D3) is a metabolite of vitamin D and a vitamin D receptor (VDR) agonist (IC50=0.4 nM). Calcitriol increases intestinal absorption of calcium and phosphorus, and increases bone resorption with parathyroid hormone.

Calcifediol (U 32070E)(Ki of 3.9 μM), a major circulating metabolite of vitamin D3, works as a competitive inhibitor. It (ED50=2 nM)also inhibits PTH secretion and mRNA.

Calcipotriol (MC 903) is a synthetic VitD3 analogue. Which has a high affinity for the vitamin D receptor.

Maxacalcitol (22-Oxacalcitriol) is a ligand of VDR-like receptors and a non-serum calcium vitamin D3 analogue. Maxacalcitol inhibits parathyroid hormone (PTH) mRNA expression in vitro and in vivo.

Doxercalciferol (TSA 840) is a synthetic vitamin D2 analog, suppressing parathyroid synthesis and secretion, used to treat secondary hyperparathyroidism and metabolic bone disease.

Calcipotriol monohydrate is an analog of Vitamin D3 with a high affinity for the vitamin D receptor. Calcipotriol monohydrate can be used for studies about psoriasis.

Alfacalcidol (Etalpha) (1-hydroxycholecalciferol; Alpha D3; 1.alpha.-Hydroxyvitamin D3) is a non-selective VDR activator medication.

Paricalcitol is a vitamin D receptor agonist. It is used for the prevention and treatment of secondary hyperparathyroidism associated with chronic renal failure.

Calcifediol monohydrate (25-hydroxy Vitamin D3 monohydrate), the main circulating metabolite of vitamin D3, is a potent VDR inhibitor.

Ergocalciferol (Vitamin D2 (Calciferol)) is a derivative of ergosterol formed by ultraviolet rays breaking of the C9-C10 bond with a strong inhibitory effect against bladder tumor promotion by sodium saccharin, and it induces cell differentiation in leukemia cells. Vitamin D2 is an inhibitor of DNA Polymerase.

Vitamin D3 (Cholecalciferol) , a naturally occurring form of vitamin D, activates an H305F/H397Y mutant vitamin D receptor (VDR).