Isotope-Labeled Secosteroids

3-epi-25-Hydroxy Vitamin D3-d₆ is the deuterium labeled 3-epi-25-Hydroxy Vitamin D3 (HY-142140). 3-epi-25-Hydroxy Vitamin D3 is the vitamin D metabolite, while vitamin D metabolism highly dependent on macrophage polarization. The C3-epimerase pathway for vitamin D is active in macrophages.

1α,25-Dihydroxyvitamin D3-(23,24,25,26,27-¹³C₅) solution is the ¹³C labeled 1α,25-Dihydroxyvitamin D3.

25-Hydroxyvitamin D2-(20,21,22,26,27-¹³C₅) solution is the ¹³C labeled 25-Hydroxyvitamin D2.

Calcitriol-¹³C₃ is the ¹³C-labeled Calcitriol. Calcitriol is the most active metabolite of vitamin D and also a vitamin D receptor (VDR) agonist.

Calcitriol-d₃ is the deuterium labeled Calcitriol. Calcitriol is the most active metabolite of vitamin D and also a vitamin D receptor (VDR) agonist.

Ercalcitriol-¹³C,d₃ is the ¹³C- and deuterium labeled Ercalcitriol. Ercalcitriol (1α,25-Dihydroxy Vitamin D2) is an active metabolite of vitamin D2.

Vitamin D4-d₅ is the deuterium labeled Vitamin D4. Vitamin D4 (22-Dihydroergocalciferol) is a Vitamin D derived from fungi. The precursor of Vitamin D4 is 22,23-dihydroergosterol.

Alfacalcidol-d₇ is the deuterium labeled Alfacalcidol. Alfacalcidol (1-hydroxycholecalciferol) is a vitamin D active metabolites, acts as a non-selective VDR activator medication, and widely be used in the management of osteoporosis.

Vitamin D3-¹³C₃ is the ¹³C-labeled Vitamin D3. Vitamin D3 (Cholecalciferol; Colecalciferol) is a naturally occuring form of vitamin D. Vitamin D3 induces cell differentiation and prevents proliferation of cancer cells.

Calcifediol-¹³C₅ monohydrate is the ¹³C-labeled Calcifediol monohydrate. Calcifediol monohydrate (25-hydroxy Vitamin D3 monohydrate), is an effective VDR ligand and VD supplement. Calcifediol is a prohormone of the vitamin D endocrine system (VDES) and is hydroxylated in the liver to produce the active form, calcitriol. Calcifediol can rapidly increase serum VD levels.

Calcipotriol-d₄ (MC 903-d₄) is the deuterium labeled Calcipotriol (HY-10001). Calcipotriol is a synthetic VitD3 analogue with a high affinity for the vitamin D receptor.

Doxercalciferol-d₆ (1.alpha.-Hydroxyvitamin D2-d₆) is deuterium labeled Doxercalciferol. Doxercalciferol is a Vitamin D2 analog, acts as an activator of Vitamin D receptor, and prevent renal disease.

Ercalcitriol-d₃ (1α,25-Dihydroxy Vitamin D2-d₃) is the deuterium labeled Ercalcitriol (HY-32350). Ercalcitriol (1α,25-Dihydroxy Vitamin D2) is a vitamin D receptor (VDR) agonist with high binding affinity. After binding to VDR, Ercalcitriol forms a complex with retinoid X receptor (RXR) to regulate target gene transcription. For example, Ercalcitriol induces human gingival/oral epithelial cells to produce human cat antimicrobial peptide (hCAP-18/LL-37), which has antimicrobial activity against periodontal pathogens such as Porphyromonas gingivalis. Ercalcitriol enhances the innate immune defense of the oral mucosa by promoting the expression of antimicrobial peptides, and is mainly used in the study of periodontal diseases and immune-related oral diseases.

3-Epi-25-hydroxyvitamin D3-¹³C₅ is the ¹³C labeled 3-Epi-25-hydroxyvitamin D3.

3-Epi-25-Hydroxyvitamin D3-d₃ is the deuterium labeled 3-Epi-25-Hydroxyvitamin D3.

Secalciferol-d₆ is the deuterium labeled Secalciferol. Secalciferol is a metabolite of Vitamin D, a possibly anti-inflammatory steroid which is involved in bone ossification.