Isotope-Labeled Steroids

4β-Hydroxycholesterol-d₄ is the deuterium labeled 4β-Hydroxycholesterol (HY-124265) . 4β-Hydroxycholesterol is a major Cholesterol (HY-N0322) metabolite and a precursor in the synthesis of bile acids that is found in human circulation.

4β-Hydroxycholesterol-d₇ is the deuterium labeled 4β-Hydroxycholesterol (HY-124265). 4β-Hydroxycholesterol is a major Cholesterol (HY-N0322) metabolite and a precursor in the synthesis of bile acids that is found in human circulation.

Dexamethasone-4,6α,21,21-d₄ is the deuterium labeled Dexamethasone-4,6α,21,21. Dexamethasone (Hexadecadrol) is a glucocorticoid receptor agonist. Dexamethasone also significantly decreases CD11b, CD18, and CD62L expression on neutrophils, and CD11b and CD18 expression on monocytes. Dexamethasone is highly effective in the control of COVID-19 infection. Dexamethasone inhibits production of exosomes containing inflammatory microRNA-155 in lipopolysaccharide-induced macrophage inflammatory responses.

Cholesterol-d₄ is 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.

Cholestenone-d₅ is the deuterium labeled Cholestenone. Cholestenone (4-Cholesten-3-one), the intermediate oxidation product of cholesterol, is metabolized primarily in the liver. Cholestenone is highly mobile in membranes and influences cholesterol flip-flop and efflux. Cholestenone may cause long-term functional defects in cells.

Estrone sulfate-d₄ sodium is the deuterium labeled Estrone sulfate sodium (HY-113293B). Estrone sulfate sodium is an inactive endogenous estrogen that can be converted into Estrone (HY-B0234) and Estradiol (HY-B0141). Estrone sulfate sodium is also a substrate of the OATP1B3 transporter. Estrone sulfate sodium can be converted into Estrone and Estradiol in normal mammary parenchymal cells. Estrone sulfate sodium stimulates the growth of nitrosomethylurea-induced mammary tumors in ovariectomized rats and the colony formation of dispersed nitrosomethylurea mammary cells, with conversion into Estrone and Estradiol occurring both in vivo and in vitro during this process. Estrone sulfate sodium is applicable to breast cancer-related research.

Cholesterol sulfate sodium-d₇ is the deuterium labeled Cholesterol sulfate sodium. Cholesterol sulfate sodium is a naturally occurring, orally active cholesterol derivative that is widely distributed in various tissues and body fluids. Cholesterol sulfate sodium acts as a DOCK2 inhibitor, with IC₅₀ values of 2 μM and 2.9 μM against mouse and human targets, respectively. Cholesterol sulfate sodium restricts excessive neutrophil infiltration and alleviates intestinal inflammation and damage. Cholesterol sulfate sodium serves as an activator of protein kinase C (PKC), which promotes squamous cell differentiation and inhibits skin carcinogenesis. Cholesterol sulfate sodium regulates cholesterol homeostasis and cellular metabolism by activating the AMPK-Sirt1 pathway. Cholesterol sulfate sodium can be used in research related to actinic keratitis, ulcerative colitis, skin cancer, and other conditions.

Deoxycorticosterone-d₈ is the deuterium labeled Deoxycorticosterone. Deoxycorticosterone is a steroid hormone produced by the adrenal gland that possesses mineralocorticoid activity and acts as an aldosterone precursor.

2-Methoxyestradiol-d₅ is the deuterium labeled 2-Methoxyestradiol. 2-Methoxyestradiol (2-ME2), an orally active endogenous metabolite of 17β-estradiol (E2), is an apoptosis inducer and an angiogenesis inhibitor with potent antineoplastic activity. 2-Methoxyestradiol also destablize microtubules. 2-Methoxyestradio, also a potent superoxide dismutase (SOD) inhibitor and a ROS-generating agent, induces autophagy in the transformed cell line HEK293 and the cancer cell lines U87 and HeLa.

17α-Hydroxyprogesterone-d₈ is the deuterium labeled 17α-Hydroxyprogesterone. 17α-Hydroxyprogesterone (17-Hydroxyprogesterone) is an endogenous progestogen as well as chemical intermediate in the biosynthesis of other steroid hormones, including the corticosteroids and the androgens and the estrogens.

17a-Hydroxypregnenolone-d₃ (17-OHP5-d₃) is the deuterium labeled 17a-Hydroxypregnenolone (HY-113263). 17a-Hydroxypregnenolone is a metabolite of Pregnenolone (HY-B0151) and a precursor in the biosynthesis of Dehydroepiandrosterone (HY-14650). 17a-Hydroxypregnenolone is a substrate for the enzyme 3β-hydroxysteroid dehydrogenase (3β-HSD).

24(RS)-Hydroxycholesterol-d₇ is the deuterium labeled 24(RS)-Hydroxycholesterol.

11-Beta-hydroxyandrostenedione-d₇ is the deuterium labeled 11-Beta-hydroxyandrostenedione. 11-Beta-hydroxyandrostenedione (4-Androsten-11β-ol-3,17-dione) is a steroid mainly found in the the adrenal origin (11β-hydroxylase is present in adrenal tissue, but absent in ovarian tissue). 11-Beta-hydroxyandrostenedione is a 11β-hydroxysteroid dehydrogenase (11βHSD) isozymes inhibitor

Estradiol-d₃ 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.

Stigmasterol-d₆ is deuterium-labeled Stigmasterol (HY-N0131).

Pregnenolone-d₄-1 is the deuterium labeled Pregnenolone. Pregnenolone (3β-Hydroxy-5-pregnen-20-one) is a powerful neurosteroid, the main precursor of various steroid hormones including steroid ketones. Pregnenolone acts as a signaling-specific inhibitor of cannabinoid CB1 receptor, inhibits the effects of tetrahydrocannabinol (THC) that are mediated by the CB1 receptors. Pregnenolone can protect the brain from cannabis intoxication. Pregnenolone is also a TRPM3 channel activator, and also can weakly activate TRPM1 channels.

Corticosterone-d₄ is the deuterium labeled Corticosterone. Corticosterone is an adrenocortical steroid that has modest but significant activities as a mineralocorticoid and a glucocorticoid.

Coprostanol-d₅ (5β-Cholestan-3β-ol-d₅) is the deuterium labeled Coprostanol. Coprostanol (5β-Cholestan-3β-ol) is a fecal sterol formed by microbial reduction of cholesterol in the intestines of man and higher animals. Coprostanol can be used as an indicator sterol of fecal pollution. Coprostanol has been recognized as a good indicator of pollution of water resources by sewage discharges. Coprostanol can serve as a potential biological indicator for cerebral chondrodystrophy (CTX).

Cholesteryl oleate-d₇ is deuterium labeled Cholesteryl oleate. Cholesteryl oleate is an ester compound formed from Cholesterol (HY-N0322) and Oleic acid (HY-N1446), which is involved in lipid transport, storage and cell membrane formation in living organisms. Cholesteryl oleate may serve as a potential biomarker for prostate cancer. Cholesteryl oleate can also prepare cationic solid lipid nanoparticles (SLNs) for efficient gene silencing.

Estradiol-d₂ 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.