Isotope-Labeled Steroids

Cholesterol-d₇ is the deuterium labeled Cholesterol. Cholesterol is the major sterol in mammals. It is making up 20-25% of structural component of the plasma membrane. Plasma membranes are highly permeable to water but relatively impermeable to ions and protons. Cholesterol plays an important role in determining the fluidity and permeability characteristics of the membrane as well as the function of both the transporters and signaling proteins. Cholesterol is also an endogenous estrogen-related receptor α (ERRα) agonist.

Estradiol-d₄ is the deuterium labeled Estradiol. Estradiol is a steroid sex hormone vital to the maintenance of fertility and secondary sexual characteristics in females. Estradiol upregulates IL-6 expression through the estrogen receptor β (ERβ) pathway.

Estradiol-d₅ is deuterium labeled Estradiol. Estradiol is a steroid sex hormone vital to the maintenance of fertility and secondary sexual characteristics in females. Estradiol upregulates IL-6 expression through the estrogen receptor β (ERβ) pathway.

Cholesterol-¹³C₂ is the ¹³C labeled Cholesterol. Cholesterol is the major sterol in mammals. It is making up 20-25% of structural component of the plasma membrane. Plasma membranes are highly permeable to water but relatively impermeable to ions and protons. Cholesterol plays an important role in determining the fluidity and permeability characteristics of the membrane as well as the function of both the transporters and signaling proteins. Cholesterol is also an endogenous estrogen-related receptor α (ERRα) agonist.

Hydrocortisone-d₄ is the deuterium labeled Hydrocortisone. Hydrocortisone (Cortisol) is a steroid hormone or glucocorticoid secreted by the adrenal cortex.

15:0 Cholesteryl ester-d₇ is deuterium labeled 15:0 Cholesteryl ester.

Cholesteryl linoleate-d₁₁ is the d₁₁-labeled Cholesteryl linoleate (HY-W010697). Cholesteryl linoleate is a cholesteryl ester with antibacterial activity that is present in low-density lipoprotein (LDL) particles, human nasal fluid, and respiratory epithelial secretions. Cholesteryl linoleate is oxidized by 12/15-lipoxygenase in macrophages and participates in selective uptake and efflux via LDL receptor-related protein. Cholesteryl linoleate does not induce endothelial adhesion molecule expression, nor does it induce monocyte binding to endothelial cells. Cholesteryl linoleate liposomal formulations inhibit the growth of multiple bacteria at physiological nasal fluid concentrations and act synergistically with antimicrobial peptides. Cholesteryl linoleate is useful for research related to atherosclerosis and bacterial infections.

Desmosterol ester-d₆ is deuterium labeled Desmosterol ester.

Corticosterone-d₈ is the deuterium labeled Corticosterone. Corticosterone is an adrenocortical steroid that has modest but significant activities as a mineralocorticoid and a glucocorticoid.

Squalene-d₆ (Super Squalene-d₆) is a deuterium labeled Squalene. Squalene (Super Squalene) is an intermediate product in the synthesis of cholesterol, and shows several pharmacological properties such as hypolipidemic, hepatoprotective, antiatherosclerotic, cardioprotective, antioxidant, and antitumour activity.

Cholesterol-d₆ is the deuterium labeled Cholesterol. Cholesterol is the major sterol in mammals. It is making up 20-25% of structural component of the plasma membrane. Plasma membranes are highly permeable to water but relatively impermeable to ions and protons. Cholesterol plays an important role in determining the fluidity and permeability characteristics of the membrane as well as the function of both the transporters and signaling proteins. Cholesterol is also an endogenous estrogen-related receptor α (ERRα) agonist.

Progesterone-d₉ is the deuterium labeled Progesterone. Progesterone is a steroid hormone that regulates the menstrual cycle and is crucial for pregnancy.

Aldosterone-d₈ is a deuterium labeled Aldosterone. Aldosterone, produced in the adrenal zona glomerulosa, regulates blood pressure.

Aldosterone-d₇ is the deuterium labeled Aldosterone. Aldosterone is the primary mineralocorticoid. Aldosterone is a steroid hormone, and it is synthesized and secreted in response to renin-angiotensin system activation (RAS) or high dietary potassium by the zona glomerulosa (ZG) of the adrenal cortex. Aldosterone activity is dependent by the binding and activation of the cytoplasmic/nuclear mineralocorticoid receptor (MR) at cellular level.

25-Hydroxycholesterol-d₆ (25-OHC-d₆) is the deuterium labeled 25-Hydroxycholesterol. 25-Hydroxycholesterol is a metabolite of cholesterol that is produced and secreted by macrophages in response to Toll-like receptor (TLR) activation. 25-hydroxycholesterol is a potent (EC₅₀≈65 nM) and selective suppressor of IgA production by B cells.

Ethynyl Estradiol-d₄ is the deuterium labeled Ethynyl Estradiol. Ethynyl Estradiol (17α-Ethynylestradiol;Ethynylestradiol) is an orally bio-active estrogen used in almost all modern formulations of combined oral contraceptive pills. Ethynyl Estradiol-d4 is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.

Cortisone-d₈ is the deuterium labeled Cortisone. Cortisone (17-Hydroxy-11-dehydrocorticosterone), an oxidized metabolite of Cortisol (a Glucocorticoid). Cortisone acts as an immunosuppressant and anti-inflammatory agent. Cortisone can partially intervene in binding of Glucocorticoid to Glucocorticoid-receptor at high concentrations.

Estrone-d₄ is the deuterium labeled Estrone. Estrone (E1) is a natural estrogenic hormone. Estrone is the main representative of the endogenous estrogens and is produced by several tissues, especially adipose tissue. Estrone is the result of the process of aromatization of androstenedione that occurs in fat cells.

Cholesterol-d₆-1 is the deuterium labeled Cholesterol. Cholesterol is the major sterol in mammals. It is making up 20-25% of structural component of the plasma membrane. Plasma membranes are highly permeable to water but relatively impermeable to ions and protons. Cholesterol plays an important role in determining the fluidity and permeability characteristics of the membrane as well as the function of both the transporters and signaling proteins. Cholesterol is also an endogenous estrogen-related receptor α (ERRα) agonist.

Desmosterol-d₆ is the deuterium labeled Desmosterol. Desmosterol is a molecule similar to cholesterol. Desmosterol is the immediate precursor of cholesterol in the Bloch pathway of cholesterol biosynthesis. Desmosterol, as an endogenous metabolite, used to study cholesterol metabolism.