Steroids and Derivatives

<p>(betaS,deltaS)-2-(4-Fluorophenyl)-beta,delta-dihydroxy-5- (1-methylethyl)-3-phenyl-4-[(phenylamino)carbonyl]-1H-pyrrole- 1-heptanoic acid calcium salt (2:1) is a fluorinated derivative of the natural metabolite 2-(4-fluorophenyl)-beta,delta-dihydroxy -5-(1 methylethyl)-3 phenyl 4-[(phenylamino)carbonyl]-1H pyrrole 1 heptanoic acid. It is an enantiomer of the racemate with optical purity &gt; 98%. The compound has been used as a pharmacological and supramolecular chemistry probe for assays and chemosensors.</p>

<p>Please enquire for more information about Defluoro atorvastatin acetonide tert-butyl ester including the price, delivery time and more detailed product information at the technical inquiry form on this page</p>

<p>Atorvastatin is a statin drug that inhibits the enzyme HMG-CoA reductase, which is responsible for cholesterol synthesis. Atorvastatin is used to lower LDL cholesterol and total cholesterol levels in the blood. It also lowers triglyceride levels and raises HDL cholesterol levels. Atorvastatin has been shown to inhibit fibrinogen production, reduce TNF-α production, and improve body mass index (BMI) in obese patients. This drug has been shown to be effective in reducing the size of atherosclerotic lesions by decreasing the amount of cholesteryl esters transferred from high-density lipoprotein (HDL) to low-density lipoprotein (LDL). It has also been shown to inhibit collagen production and stimulate muscle cell proliferation.</p>

<p>Hydrocortisone 21-Aldehyde (Hydrate</p>

<p>Atorvastatin is a drug used for the treatment of hypercholesterolemia and cardiovascular diseases. Atorvastatin lactam, which is an impurity formed during the synthesis of atorvastatin, has been shown to inhibit cholesterol biosynthesis in a rat model. The in vivo metabolism of atorvastatin lactam was studied by HPLC-MS/MS and was found to be identical to that of the parent molecule. This impurity may be useful as a research and development or custom synthesis product, or as an impurity standard for HPLC analysis.</p>

<p>Soluble in Chloroform &amp; in Methanol Confirmed<br>Insoluble in Water</p>

<p>Soluble in Chloroform &amp; in Methanol Confirmed<br>Insoluble in Wate</p>

<p>7α-Hydroxyhydrocortisone</p>

<p>O-Methyl atorvastatin calcium is a drug product that is an HPLC standard. It is a natural metabolite of atorvastatin, which is synthesized by cytochrome P450 3A4 in the liver. O-Methyl atorvastatin calcium has been shown to be an impurity in some batches of atorvastatin calcium. It has been observed to have pharmacological effects similar to those of atorvastatin. O-Methyl atorvastatin calcium has been used as a research and development (R&amp;D) tool for studies on the metabolism of drugs, including its own synthesis and the study of the effect on other drugs such as amiodarone.</p>

<p>Bexarotene (LGD1069) is a retinoid analogue that is used to treat the skin manifestations of cutaneous T cell lymphoma (CTCL).</p>

<p>Orally active atorvastatin inhibits HMG-CoA reductase, lowers lipids, hinders SV-SMC cell growth, and can up thrombotic risk with clopidogrel.</p>

<p>Travoprost (Fluprostenol isopropyl ester) is used to treat glaucoma and ocular hypertension,is a potent and selective FP prostaglandin receptor agonist.</p>

<p>Impurity Levonorgestrel EP Impurity G<br>Applications 6α-Hydroxy Levonorgestrel (Levonorgestrel EP Impurity G) is a hydroxylated impurity of Norgestrel (N689500).<br>References Lin, Y., et al.: Biochim. Biophys. Acta, 218, 526 (1970), Smith, K., et al.: J. Steroid Biochem., 32, 445 (1989), Hu, S., et al.: Steroids, 60, 337 (1995),<br></p>

<p>Applications (3aR,4R,5R,6aS)-4-Formyl-2-oxohexahydro-2H-cyclopenta[b]furan-5-yl [1,1'-biphenyl]-4-carboxylate is an intermediate in the synthesis of Prostaglandin E2 (P838610), the most common and biologically potent of mammalian prostaglandins.<br>References Radeuchel, B., et al.: Tetrahedron. Lett., 633, 9 (1975);<br></p>

<p>Impurity Finasteride EP Impurity B<br>Applications 3-Oxo-4-aza-5α-αndrost-1-ene-17β-carboxylic Acid Methyl Ester (Finasteride EP Impurity B) is an impurity of Finasteride (F342000) and Dutasteride (D735000). An intermediate in the synthesis of Finasteride and Dutasteride, 5α-reductase inhibitors used for treatment of benign prostatic hyperplasia acne, seborrhea, female hirsutism, prostatitis, and prostatic carcinoma and other hyperandrogenetic related disorders. Finasteride impurity.<br>References Bakshi., et al.: J. Med. Chem., 38, 3189 (1995),<br></p>

<p>Applications Latanoprost Enol is an impurity of Latanoprost (L177280), a prostaglandin analogue used to treat glaucoma and other degenerative diseases of the eye.<br>References Resul, B., et al.: J. Med. Chem., 36, 2242 (1993);<br></p>

<p>Applications Lasofoxifene intermediate.<br>References Rosati, R., et al.: J. Med. Chem., 41, 2928 (1998),<br></p>

<p>Stability Temperature and Light Sensitive<br>Applications A metabolite of Vitamin D3.<br>References Bell, P.A., et al.: Biochem. J., et al.: 115, 663 (1969), Kumar, R.S., et al.: J. Clin. Invest., 65, 277 (1980), Shimada, K., et al.: Biol. Pharm. Bull., 19, 491 (1996),<br></p>

<p>Applications Exemestane-13C,D3 is the labeled analogue of Exemestane (E957000), an antineoplastic (hormonal).<br>References Giudici, D., et al.: J. Steroid Biochem., 30, 391 (1988), Evans, T.R.J., et al.: Cancer Res., 52, 5933 (1992), Zilembo, N., et al.: Brit. J. Cancer, 72, 1007 (1995)<br></p>

<p>Applications Estriol 16α,17β-Diacetate is a diacetate derivative of Estriol (E888960); an estrogenic metabolite considerably less potent than the hormone Estradiol (E888000).<br>References Marrian, et al.: Biochem. J., 23,1090 (1929); Huffman, et al.: J. Biol. Chem., 169, 167 (1947)<br></p>

<p>Applications ∆9,11-Dehydro-17α-cyanomethyl estradiol is a metabolite of progestin dienogest (D441870), and is currently being investigated for progesterone-receptor binding, progestational, antiprogestational, estrogenic and antigonadotropic activities for the inhibition of fertility. It is also being considered a novel treatment for heavy menstrual bleeding.<br>References Oettel, M., et al.: Pharmazie, 41, 627 (1993); Kiley, J. &amp; Shulman, L.: Int. J. Womens Health, 3, 281 (2011);<br></p>

<p>Applications Estradiols ester used in polymeric matrix for transdermal treatment of osteoporosis.<br>References Tripathi, V.N., et al.: Can. J. Animal Sci., 48, 449 (1968),<br></p>

<p>Applications An impurity of Atorvastatin.<br>References Graul, A., et al.: Drugs Fut. 22, 956 (1997),<br></p>

<p>Impurity Levonorgestrel EP Impurity C<br>Applications 13-Ethyl-3-ethynyl-18,19-dinor-17α-pregna-3,5-dien-20-yn-17-ol (Levonorgestrel EP Impurity C) is an impurity of Levonorgestrel.<br></p>

<p>Applications A labelled glucocorticoid microemulsion nasal preparation allergy inhibitor rhinitis.This compound is a mixture of diastereomers at the cyclohexyl acetal.<br>References Fukuoka, E., et al.: Chem. Pharm. Bull., 35, 2943 (1987), Schmitt, E., et al.: J. Pharm. Sci., 88, 291 (1999), Hancock, B., et al.: Pharm. Res., 17, 397 (2000), Hogan, S., et al.: Pharm. Res., 18, 112 (2001).<br></p>

<p>Impurity Calcipotriol EP Impurity C<br>Stability Temperature Sensitive<br>Applications The trans-isomeric impurity of Calcipotriene (C144200) and a vitamin D3 analogue with antitumor effects.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Wietrzyk, J. et al.: Anti-Cancer Drugs, 18, 447 (2007); Wietrzyk, J. et al.: Anticancer Res., 27, 3387 (2007); Filip, B. et al.: J. Ster. Biochem. Mol. Biol., 121, 399 (2010);<br></p>

<p>Applications A labelled metabolite of Budesonide (B689490), an antiinflammatory agent.<br>References Cserhati, T., et al.: J. Pharm. Biomed. Anal., 22, 25 (2000), Dilger, K., et al.: J. Clin. Pharmacol., 47, 1532 (2007), Buchwald, P., et al.: Steroids, 73, 193 (2008),<br></p>

<p>Applications 21-Carboxy Dexamethasone is a useful research chemical.<br>References Shepard, Allan R., ACS Chem. Biol., 3, 549-558(2013);<br></p>

<p>Dexamethasone acetate treats rheumatic issues, skin conditions, asthma, allergies, COPD, brain swelling, croup, TB adjunct.</p>

<p>3-(N-Phenyl-N-methyl)aminoacrolein is a hydrophobic compound that has been shown to reversibly bind to serum albumin. This binding leads to a decrease in the lipid content of lipoproteins and a decrease in the rate of their metabolism. These effects are mediated by hydrophobic interactions with the hydrophobic regions of serum albumin. 3-(N-Phenyl-N-methyl)aminoacrolein also interacts with human serum albumin, which is involved in lipid transport and metabolism, and can be used as a contrast agent for X-ray diffraction studies.</p>

<p>Applications A potential metabolite of Exemestane (E957000).<br>References Buzzetti, F., et al.: Steroids, 58, 527 (1993),<br></p>

<p>Applications 10β-Hydroxy D-(-)-Norgestrel is an impurity of Levonorgestrel (N689510).<br>References Gorog, S. et al.: J. Pharmac. Biomed. Anal., 14, 85 (1995); Berta, R. et al.: J. Pharmac. Biomed. Anal., 54, 458 (2011); Choudhary, M. I. et al.: Nat. Prod. Res., 20, 1074 (2006);<br></p>

<p>Applications Labelled Estradiol (E888000) derivative. An estrogen.<br>References Salole, E.G., et al.: Anal. Profiles Drug Subs., 15, 283 (1986), Lievertz, R.W., et al.: Am. J. Obstet. Gynecol., 156, 1289 (1987),<br></p>

<p>Applications Protected Estradiol. Drinking water contaminant candidate list 3 (CCL 3) compound as per United States Environmental Protection Agency (EPA), environmental, and food contaminants.<br>References Miilunpohja, M., et al.: J. Steroid Biochem. Mol. Biol., 100, 59 (2006), Ikonomou, M., et al.: Environ. Toxicol. Chem., 27, 243 (2008),<br></p>

<p>Applications 23-Hydroxybudesonide is an metabolite of budesonide (B689490), a non-halogenated glucocorticoid related to triamcinolone hexacetonide. Used as an antiinflammatory agent.<br>References Edsbaecker, S., et al.: Drug. Metabol. Dispostion., 15, 403 (1987); Moore, C.D., et al.: Drug. Metabolism. Disposition., 41, 379 (2013);<br></p>

<p>Applications Epoxy Metradiene is an impurity from synthesis of Fluorometholone (F593145),a glucocorticoid; anti-inflammatory.<br>References Kupferman, A., et al.: Arch. Ophthlmol., 640, 100 (1982); Tokunaga H., et al.: Chem. Pharm. Bull., 32, 4012 (1984);<br></p>

<p>Applications 15-Keto Latanoprost is a metabolite of Latanoprost (L177280).<br>References Sjoquist, B., et al.: Drug Metab. Dispos., 26, 745 (1998), Watson, P., et al.: Drugs Today, 35, 449 (1999),<br></p>

<p>Applications 17β-Hydroxy Exemestane 17-O-β-D-Glucuronide is the glucuronidated conjugate of the hydroxy metabolite of Exemestane (E957000).<br>References Sun, D. et al.: Pharmacogen. Genom., 20, 575 (2010);<br></p>

<p>Applications Topical anti-inflammatory agent. Glucocorticoid.<br>References Stache, U., et al.: Arzneim.-Forsch., 35, 1753 (1985),<br></p>

<p>Impurity Progesterone EP Impurity E<br>Applications 20-Dihydroprogesterone Acetate (Progesterone EP Impurity E) is an analogue of Progesterone (P755900), a steroid used in cardiovascular and menopausal studies.<br>References Grodstein, F. et al.: New. Eng. J. Med., 335, 453 (1996); Cushman, M. et al.: Circulation, 100, 717 (1999);<br></p>

<p>Stability Hygroscopic<br>Applications Tixocortol is an anti-inflammatory agent. Tixocortol is used in fluorescent chemoaffinity labeling.<br>References Torossian, D.R., et al.: Arzneim.-Forsch., 31, 453 (1981),<br></p>

<p>Applications Vitamin D3 (V676045) analog.<br>References Roy, A., et al.: Steroids, 60, 530 (1995);<br></p>

<p>Applications Triamcinolone Acetonide (T767165) impurity.<br></p>

<p>Applications Progesterone (P755900) impurity.<br>References Liang, T., et al.: Biol. Chem., 256, 7998 (1981), Bratoeff, E., et al.: J. Steroid Biochem. Mol. Biol., 111, 275 (2008),<br></p>

<p>Applications A progestogen with low androgenic potency.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Viinikka, L., et al.: Eur. J. Clin. Pharmacol., 15, 349 (1979), Bergink, E.W., et al.: J. Steroid Biochem., 14, 175 (1981)<br></p>

<p>Applications 2,5-Bis(trifluoromethyl)aniline is a haloalkul substituted aniline used in the preparation of anti-benign prostatic hyperplasia drug, Dutasteride (D735000).<br>References Liang, Y. et al.: Jil. Dax. Xueb. Lixeub., 45, 1035 (2007);<br></p>

<p>(1β,2β)-17-(Acetyloxy)-1,2-dihydro-3'H-cyclopropa[1,2]pregna<br>-1,4,6-triene-3,20-dione; 17-Hydroxy-1 ,2 -methylenepregna<br>-4,6-diene-3,20-dione Acetate; Cyproterone Acetate EP<br>Impurity A<br></p>

<p>Stability Not stable in Acidic or basic condition<br>Applications 6β-Methyl Fluorometholone is an impurity in the synthesis of Fluorometholone (F593145), a glucocorticoid; anti-inflammatory.<br>References Kupferman, A., et al.: Arch. Ophthlmol., 640, 100 (1982), Tokunaga H., et al.: Chem. Pharm. Bull., 32, 4012 (1984),<br></p>

<p>Applications Preclinical profile of Ciclesonide, a novel corticosteroid for the treatment of asthma.<br>References Austin, R., et al.: Eur. Respir. J., 20, 1386 (2002), Belvisi, M.G., et al.: J. Pharmacol. Exp. Ther., 314, 568 (2005), Richter, K., et al.: J. Clin. Pharmacol., 45, 146 ( 2005).<br></p>

<p>Applications 4’-Nitro-3’-(trifluoromethyl)acetanilide is a metabolite of the nonsteroidal antiandrogen drug, Flutamide (F598850).<br>References Kang, P. et al.: Drug Metab. Dispos., 36, 1425 (2008); Takashima, E. et al.: Biol. Pharmac. Bull., 26, 1455 (2003); Katchen, B. et al.: J. Invest. Dermatol., 66, 379 (1976);<br></p>

<p>Applications Fulvestrant 17-Ketone, is an impurity of Fulvestrant (F862500), a novel steroidal estrogen antagonist reported to lack any partial agonist activity. Antineoplastic (hormonal).<br>References Wakeling, A.E., et al.: Cancer Res., 51, 3867 (1991), Howell, A., et al.: Br. J. Cancer, 74, 300 (1996), Robertson, J.F., et al.: Cancer Res., 61, 6739 (2001),<br></p>

<p>Impurity Ethinylestradiol EP Impurity M<br>Applications 2-Methylethynylestradiol (Ethinylestradiol EP Impurity M) is a 17α-ethynyl steroid. 2-Methylethynylestradiol is an impurity of Ethynylestradiol (E685100).<br></p>

<p>Applications α,α,α-Trifluorotoluene, is used as a specialty solvent in organic synthesis and an intermediate in the production of pesticides and pharmaceuticals.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Skelly, P. D., et al.: Handbook for Critical Cleaning, 1, 191 (2011);<br></p>

<p>Applications The minor metabolite of Deflazacort.<br>References Bernareggi, A., et al.: J. Pharma. Biomed. Anal., 5, 177-81 (1987), Assandri, A., et al.: Xenobiotica, 13(3), 185 (1983), Martinelli, E., et al.: Drug Metab. Dispos., 7, 335 (1979),<br></p>

<p>Applications Tasimelteon is a novel drug, used in the treatment of non-24 hour sleep-wake disorder. It helps to correct the circadian rhythm disorder often seen in patients who are visually impaired.<br>References Lahon, J. et al.: World. J. Pharm. Res., 3, 1521 (2014);<br></p>

<p>Applications 1-(2,4-Dihydroxyphenyl)-2-(4-hydroxyphenyl)propan-1-one is an antioxidant and also has anti cancer effects on human breast cancer MCF-7 cells and Hep3B human hepatocellular carcinoma cells.<br>References Choi, Eun Jeong, et al.: Mol. Med. Rep., 9(1), 328-332 (2014);Choi, Eun Jeong, et al.: Onco.Lett., 6(6), 1784-1788 (2013);Choi, Eun Jeong, et al.: Inter. J.of Mol. Med., 31(3), 726-730 (2013)<br></p>

<p>Applications Sodium salt of Dexamethasone β-D-Glucuronide is a potential prodrug for colonic delivery of the antiinflammatory corticosteroid Dexamethasone.<br>References Fotsis, T., et al.: J. Steroid Biochem., 14, 457 (1981), Choi, M., et al.: Steroids, 65, 54 (2000); Haeberlin, B. et al.: Pharm Res., 10, 1553 (1993);<br></p>

<p>Applications E-Ospemifene is the E-isomer of Ospemifene (O703000) and is useful for lowering serum cholesterol. It acts as a antiatherosclerotic and is also estrogen-like.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Sodervall, M., et al.: PCT Int. Appl. WO 9942427 A1 19990826. Aug 26, 1999<br></p>

<p>Applications 25-Hydroxy Cholesterol-d6, is the labeled analogue of 25-Hydroxy Cholesterol (H918030), which is an oxygenated derivative of Cholesterol (C432501); an oxysterol. An inhibitor of human immunodeficiency virus replication in vitro. It also induces apoptosis in human monocytic cell lines as well as inducing apoptosis in CEM cells associated with negative regulation of c-Myc.<br>References Aupeix, K. et al.: Immunobiology, 194, 415 (1995); Moog, C. et al.: Antivir. Chem, Chemother., 9, 491 (1998); Ayala-Torres, S. et al.: Exp. Cell Res., 246, 193 (1999);<br></p>

<p>Impurity Atorvastatin 2-Hydroxy Lactone<br>Stability Hygroscopic<br>Applications A metabolite of Atorvastatin, a selective, competitive HMG-CoA reductase inhibitor. Atorvastatin is the only drug in its class specfically indicated for lowering both elevated LDL-cholesterol and triglycerides in patients with hypercholesterolemia.<br></p>

<p>Applications Cortisol derivative. A potential corticoid metabolite.<br>References Okihara, R. et al.; Chem. Pharm. Bull. 58, 344 (2010); Hosoda, H. et al.; Chem. Pharm. Bull. 32, 4023 (1984)<br></p>

<p>Applications Protected Estriol.<br>References Gohil, V., et al.: Nat. Biotechnol., 28, 249 (2010),<br></p>

<p>Applications 2-Hydroxy Estradiol 6-N3-Adenine is a depurinating adduct that is created by the interaction of specific metabolites of estrogens in the body with DNA. Unfortunately, these adducts are endogeneous initiators of various human cancers, such as breast &amp; prostate.<br>References Yang, L., et al.: Prostate, 69, 41 (2009); Zahid, M., et al.: Chem. Res. Toxicol., 19, 164 (2006); Zhang, Y., et al.: Metabol. Clin. Exp., 56, 887 (2007)<br></p>

<p>Applications Testosterone-16,16,17-d3 17-Phenylpropionate, is the labeled analogue of Testosterone 17-Phenylpropionate (T155150), a Testosterone ester being misused by athletes in an attempt to improve sports performance. It can also be used as a therapy in glucocorticoid-treated patients to increase the circulating testosterone concentration.<br>References Shackleton, C. H. L., et al.: Steroids, 62 (7), 523 (1997); Reid, I. R., et al.: Archives Internal Med., 156 (11), 1173 (1996);<br></p>

<p>Applications 2-Hydroxy-estrone-6-N3-adenine is a depurinating adduct that is created by the interaction of specific metabolites of estrogens in the body with DNA. Unfortunately, these adducts are endogenous initiators of various human cancers, such as breast &amp; prostate.<br>References Yang, L., et al.: Prostate, 69, 41 (2009); Zahid, M., et al.: Chem. Res. Toxicol., 19, 164 (2006); Zhang, Y., et al.: Metabol. Clin. Exp., 56, 887 (2007)<br></p>

<p>Applications E-17-Deacetylnorgestimate is a metabolite of Norgestimate. A contraceptive for birth control used by women.Note- The oxime isomerizes when: 1) Heated in any solvent or heating the crystalline form 2) Dissolved in MeOH at room temperature very quickly 3) Dissolved in acetone or CHCl3 at room temperature in a couple of hours at room temperature4) In EtOAc or EtOAc/isooctane over a couple of days at RT. It is stable in the crystalline form.<br>References Phillips, A., et al.: Steroids, 55, 373 (1990); Rabiolo, A., et al.: Arch. Gynecol. Obstet., 294, 1317 (2016)<br></p>

<p>Impurity Clobetasol Propionate EP Impurity I<br>Stability Hygroscopic<br>Applications Betamethasone 17-Propionate 21-Mesylate (Clobetasol Propionate EP Impurity I) is the 21-mesylate analogue of Betamethasone 17-Acetate (B327015) with antiinflammatory activity.<br>References Mitsukuchi, M. et al.: Chem. Pharm. Bull., 37, 3286 (1989);<br></p>

<p>Applications (6α,9β,11β,16α)-21-(Acetyloxy)-9,11-epoxy-6-fluoro-17-hydroxy-16-methylpregna-1,4-diene-3,20-dione is an intermediate in the synthesis of Paramethasone Acetate (P191845), a derivative of Dexamethasone (D298800), a potent synthetic member of the glucocorticoid class of steroid drugs that has anti-inflammatory and immunosuppressant properties.<br>References Wershil, B.K., et al.: Int. Arch. Allergy Immunol., 107, 323 (1995), Riccardi, C., et al.: Cell Death Diff., 6, 1182 (1999), Llanos, S.L. and Roldan, A.: Bio Cell, 23, 29 (1999)<br></p>

<p>Applications Mexrenone is an impurity of eplerenon (E588775). Eplerenone is a selective aldosterone receptor antagonist (SARA), structurally similar to Spiranolactone. Eplerenone is used alone or in combination with other medications to treat high blood pressure. Eplerenone is in a class of medications called mineralocorticoid receptor antagonists. It works by blocking the action of aldosterone, a natural substance in the body that raises blood pressure.<br>References de Gasparo, M., et al.: J. Pharmacol. Exp. Ther., 240, 650 (1987), Delyani, J.A., et al.: Cardiovasc. Drug Rev., 19, 185 (2001), Burgess, E., et al.: Expert. Opin. Pharmacother., 5, 2573 (2004), Ravis, W.R., et al.: J. Clin. Pharmacol., 45, 810 (2005),<br></p>

<p>Applications Estrone-2,4-d2 (CAS# 350820-16-5) is a useful isotopically labeled research compound.<br></p>

<p>Applications A derivative of Exemestane (E957000), a new aromatase inhibitor.<br>References Thompson, E., et al.: J. Biol. Chem., 249, 5364 (1974), Cole, P., et al.: J. Med. Chem., 33, 2933 (1990), Buzzetti, F., et al.: Steroids, 58, 527 (1993),<br></p>

<p>Applications Carbenoxolone<br></p>

<p>Applications Isotope labelled Equilenin (E592400), which is a naturally occuring estrogenic steroidal hormone (1,2) isolated from urine of pregnant mares (3). Not found in human urine. Component of conjugated estrogenic hormones. Estrogen. This compound is a contaminant of emerging concern (CECs). Drinking water contaminant candidate list 3 (CCL 3) compound as per United States Environmental Protection Agency (EPA), environmental, and food contaminants.<br>References 1. Corbellini, A. et L.: Farmaco Sci. 1964 Nov;19:913-22.2. Stein, R. et al.: Tetrahedron 1970 Apr;26(8):1917-33.<br></p>

<p>Applications Glucocorticoid.<br></p>

<p>Applications Labelled Dutasteride (D735000). Dutasteride is a dual inhibitor of 5α-reductase isoenzymes type 1 and 2; structurally related to Finasteride (F342000). Dutasteride is used in the treatment of benign prostatic hyperplasia.<br>References Bakshi, R.K., et al.: J. Med. Chem., 38, 3189 (1995), Gisleskog, P.O., et al.: Brit. J. Clin. Pharmacol., 47, 53 (1999), Djavan, B., et al.: Expert Opin. Pharmacother., 6, 311 (2005),<br></p>

<p>Applications Obeticholic Acid Methyl Ester is a bile acid derivative useful in research.<br>References Pellicciari, R., et al.: Journal of Medicinal Chemistry, 50, 4265 (2007)<br></p>

<p>Applications Estriol 3,16α,17β-Triacetate is a triacetate derivative of Estriol (E888960) with contraceptive activity.<br>References Wotiz, H.H., et al.: J. Reprod. Fertil., 26, 363 (1971)<br></p>

<p>Impurity Fulvestrant Impurity E;<br>Applications Fulvestrant (F862500) impurity E.<br></p>