Steroidi e Derivati

<p>Applications An inhibitor of steroid biosynthesis. Used as an adrenocortical suppressant. Used in the treatment of breast cancer.<br>References Komanicky, P., et al.: J. Clin. Endocrinol. Metab., 47, 1042 (1978), Mori, Y., et al., Chem. Pharm. Bull., 29, 2646 (1981), Williams, C.J., et al.: Cancer Treat. Rep., 71, 1197 (1987)<br></p>

<p>Applications Progesterone (P755900) metabolite.<br>References Christy H., et al.: J. Steroid Biochem., Mol., Biol., 116, 171 (2009), Peristera, O., et al.: Toxicol., Lett., 189, 219 (2009), Mori, T., et al.: Toxicol., Lett., 186, 123 (2009),<br></p>

<p>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>References Smith, S., et al.: Am. J. Cardiol., 80, 10H (1997), Jacobsen, W., et al.: Drug Metab. Dispos., 28, 1369 (2000), Istvan, E., et al.: Science, 292, 1160 (2001), Tabernero, L., et al.: J. Biol. Chem., 278, 19933 (2003), Bratton, L., et al.: Bioorg. Med. Chem., 15, 5576 (2007),<br></p>

<p>Impurity Latanoprost USP Related Compound B<br>Applications An impurity of commercially prepared Latanoprost (L177280). Latanoprost USP Related Compound B.<br>References Resul, B., et al.: J. Med. Chem., 36, 2242 (1993),<br></p>

<p>Applications Derivative of 19-Nortestosterone. In combination with estrogen as oral contraceptive. Progestogen.<br>References Hubner, M., et al.: Arzneim.-Forsch., 30, 401 (1980), Spona, J., et al.: Contraception, 56, 185 (1997), Foster, R.H., et al.: Drugs, 56, 825 (1998),<br></p>

<p>Applications The R-enantiomer of nonsteroidal selective androgen receptor modulator (SARM) Ostarine (O703500).<br></p>

<p>Applications Fluorometholone is 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>Impurity Prednicarbate USP Related Compound A<br>Applications 1,2-Dihydro Prednicarbate is a related compound of Prednicarbate (P703700). Prednicarbate related compound A. Prednicarbate USP Related Compound A.<br>References Conolly, et al.: J. Chem. Soc., 828 (1937),<br></p>

<p>Impurity Triamcinolone EP Impurity B<br>Applications Triamcinolone 21-Acetate is an impurity of Triamcinolone (T767160), a glucocorticoid used as an antiasthmatic.<br>References Florey, K., et al.: Anal. Profiles Drug Subs., 1, 397 (1972), Bernstein, I.L., et al.: Chest, 81, 20 (1982)<br></p>

<p>Applications A labelled metabolite of Estradiol (E888000).<br>References Marrian, B., et al.: Biochem. J., 59, 136 (1955), Dietel, M., et al.: Cancer Res., 50, 6100 (1990), Schumacher, G., et al.: Clin. Cancer Res., 5, 493 (1999), Robert, J., et al.: J. Med. Chem., 46, 4805 (2003),<br></p>

<p>Stability Hygroscopic<br>Applications Desonide 21-Acetate is a reactant in the synthesis of 7α-halogenocorticosteroids with anti-inflammatory activity.<br>References De, K., et. al.: J. Indian Chem. Soc., 79, 513 (2002)<br></p>

<p>Applications A synthetic diethyl-ether of Estradiol with no distal hormonal effects, in patients undergoing surgical correction for stress urinary incontinence (SUI).<br>References Kelleher, C., et al.: Br. J. Obstet. Gynaecol., 104, 1374 (1997), Deffieux, X., et al.: J. Gynecol. Obstet. Biol. Reprod., 35, 678 (2006),<br></p>

<p>Applications 11β,21-dihydroxypregna-1,4,16-triene-3,20-dione is a derivative of Prednisolone (P703740) and an intermediate in the synthesis of isoxazolinopregnadienes which exhibit anti-inflammatory activity.<br>References Khalil, M.A., et al.: Med. Chem. Res., 6, 52 (1996); Kwon, T., et al.: J. Med. Chem., 38, 1048 (1995)<br></p>

<p>Impurity Estriol EP Impurity E<br>Applications 17-Epiestriol (Estriol EP Impurity E) is a metabolite of Estradiol.<br>References Marrian, B., et al.: Biochem. J., 59, 136 (1955), Dietel, M., et al.: Cancer Res., 50, 6100 (1990), Schumacher, G., et al.: Clin. Cancer Res., 5, 493 (1999), Robert, J., et al.: J. Med. Chem., 46, 4805 (2003),<br></p>

<p>Impurity Betamethasone Dipropionate EP Impurity D<br>Applications Betamethasone 21-acetate-17-propionate (Betamethasone Dipropionate EP Impurity D) is a related compound of Betamethasone dipropionate (B327005).<br>References Grootveld, M., et al.: Biochem. Pharmacol., 37, 271 (1988), Chen, B., et al.: Steriods, 74, 30 (2009), Mikami, E., et al.: J. Pharm. Biomed. Anal., 28, 261 (2002),<br></p>

<p>Applications 17,21-Dihydroxy-16α-methylpregna-1,4,9(11)-triene-3,20-dione 21-Acetate is an intermediate in the synthesis of Mometasone Furoate (M490000), a tropical corticosteroid used as an anti-inflammatory agent.<br>References Spangler, M., et al.: Chromatograph., 54, 329 (2001); Reeves, E.K., et al.: Bioorg. Med. Chem., 21, 2241 (2013);<br></p>

<p>Applications A metabolite of Spironolactone.<br>References Gochman, N., et al.: J. Pharmacol. Exp. Ther., 135, 312 (1962), Tori, K., et al.: Steroids, 4, 713 (1964), Solymoss, B., et al.: Toxicol. Appli. Pharmacol., 18, 586 (1971),<br></p>

<p>Applications Ospemifene-d4 is the isotope labelled analog of Ospemifene (O703000). Ospemifene is used to treat dyspareunia. It is a selective estrogen receptor modulator (SERM) acting similarly to an estrogen.<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 Rutanen, E., et al.: Menopause, 10, 433 (2003);<br></p>

<p>Applications Ospemifene is used to treat dyspareunia. It is a selective estrogen receptor modulator (SERM) acting similarly to an estrogen.<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 Rutanen, E., et al.: Menopause, 10, 433 (2003);<br></p>

<p>Applications 5β-Dihydro Progesterone-d8 is labelled which is labelled 5β-Dihydro Progesterone (D449280), a metabolite of the neuroactive steroid Progesterone (PROG) (P755900).<br>References Wiebe, J., et al.: Cancer Res., 60, 936 (2000), Lacasa, D., et al.: J. Biol. Chem., 276, 11512 (2001), Johansson, I., et al.: Brain Res., 934, 125 (2002), Leonhardt, S., et al.: Steroids, 68, 761 (2003),<br></p>

<p>Impurity Estriol EP Impurity F<br>Applications 16-Epiestriol (Estriol EP Impurity F) is a metabolite of Estradiol.<br>References Marrian, B., et al.: Biochem. J., 59, 136 (1955), Dietel, M., et al.: Cancer Res., 50, 6100 (1990), Schumacher, G., et al.: Clin. Cancer Res., 5, 493 (1999), Robert, J., et al.: J. Med. Chem., 46, 4805 (2003),<br></p>

<p>Applications Dexamethasone Sodium Sulfobenzoate is related to Dexamethasone (D298800) a steroid that regulates T cell survival, growth, and differentiation.<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>Impurity Levonorgestrel EP Impurity M<br>Applications 6(7)-Dehydro Norgestrel (Levonorgestrel EP Impurity M) is a Norgestrel (N689500) impurity.<br>References Gorog, S., et al.: J. Chromatogr., 400 177 (1987),<br></p>

<p>Applications 17α-Progesterone is a testosterone precursror generated from cholesterol. Also used as a diagnostic agent in the identification and study of ovarian Leydig cell tumor disease.<br>References Vesely, D. et al.: Proc. Natl. Acad. Sci. USA., 76, 3491 (1979); Arhan, E. et al.: J. Pediatric Endocrinol. Metab., 21, 181 (2008);<br></p>

<p>Applications Δ7-Avenasterol is an analog of Stigmasterol (S686750); a plant sterol that is used as a precursor in the synthesis of progesterone.<br>References Han, P., et al.: Biotechnol. App. Biochem., 54, 105 (2009); Matsunaga, I., et al.: Anal. Biochem., 393, 222 (2009); Huang, C., et al.: Plant Physiol., 150, 1192 (2009)<br></p>

<p>Applications 24(R/S)-Hydroxycholesterol-d7 is used in the study of biochemical methods for quantitative detection of steroids containing quantitative charge tags and oxidizing agents and using mass spectroscopy for detection.<br>References Groffoths, Williams., US 20150233953, (2015)<br></p>

<p>Stability Hygroscopic<br>Applications Cardiotonic.<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 Foerster, et al.: Arch. Int. Pharmacodyn. Ther., 159, 1 (1966), Jakovljevic, I.M., Anal. Profiles Drug Subs., 3, 149 (1974)<br></p>

<p>Applications 20α-Dihydro Pregnenolone is a metabolite of Pregnenolone (P712200).<br>References Purdy, R., et al.: J. Med. Chem., 33, 1572 (1990), Bixo, M., et al.: Brain Res., 764, 173 (1997), Huang, X., et al.: J. Biol. Chem., 275, 29452 (2000),<br></p>

<p>Stability Light Sensitive<br>Applications 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>Impurity Clobetasol Propionate EP Impurity A / Betamethasone Dipropionate EP Impurity B<br>Applications Betamethasone 17-Propionate (Clobetasol Propionate EP Impurity A) is a degradation product of Betamethasone. Glucocorticoid.<br>References Andersson, P., et al.: J. Pharm. Pharmacol., 36, 763 (1984), Wurthwein, G., et al.: Biopharm. Drug Dispos., 11, 381 (1990), Samtani, M., et al.: J. Pharm. Sci., 93, 726 (2004), Samtani, M., et al.: Drug Metab. Dispos., 33, 1124 (2005),<br></p>

<p>Applications di(4-Hydroxy Atorvastatin-d5) Calcium Salt is a labeled metabolite of Atorvastatin Calcium Salt (A791750), 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>References Kearney, A.S., et al.: Pharm. Res., 10, 1461 (1993); Heinonen, T.M., et al.: Clin. Ther., 18, 853 (1996); Whitfield, L.R., et al.: Eur. J. Drug Metab. Pharmacokinet., 25, 97 (2000)<br></p>

<p>Applications Cardiotonic. Obtained by the O-methylation of Digoxin.<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 Hunter, J., et al.: J. Biol. Chem., 268, 14991 (1993), Greiner, B., et al.: J. Clin. Invest., 104, 147 (1999), Jun, A., et al.: J. Pharm.Pharm. Sci., 4, 263 (2001), Sugiyama, D., et al.: Drug Metab. Dispos., 30, 220 (2002),<br></p>

<p>Applications Steroid hormone produced by the corpus luteum. Induces maturation and secretory activity of the uterine endothelium; suppresses ovulation. Progesterone is implicated in the etiology of breast cancer.This compound is a contaminant of emerging concern (CECs).<br>References Anderson, E., et al.: Breast Cancer Res., 4, 197 (2002), Lanari, C., et al.: Breast Cancer Res., 4, 240 (2002), Albrecht, E.D., et al.: Front. Biosci., 8, 416 (2003), Qiu, M., et al.: J. Steroid Biochem. Mol. Biol., 85, 147 (2003),<br></p>

<p>Applications BGP 15 is a calcipotriene-based vitamin D3 analog that inhibits poly(ADP-ribose) polymerasesis (PARP), a class of enzymes that regulate DNA repair and apoptosis (1). BGP 15 is also a cardioprotective agent (2). Also, BPG 15 improves mitochondrial function, protects neurons from dying in vitro and in vivo, and promotes cardiac innervation in vivo.<br>References (1) Berkovich, L., et al.: Anticancer Drugs. 21, 609 (2010) (2) Szabados, E., et al. Biochem Pharmacol. 59, 937 (2000)<br></p>

<p>Applications Labelled Estradiol. Estradiol (known as α-Estradiol or 17 α-Estradiol) is a biologically active estrogen in human breast cancer cells in tissue culture. 17-Εstradiol and its selective receptor, ER-X, are not part of a classical hormone/receptor endocrine system but of a system with important autocrine/paracrine functions in the developing and adult brain. 17-Estradiol may have enormous implications for hormone replacement strategies at the menopause and in the treatment of such neurodegenerative disorders as Alzheimer’s disease and ischemic stroke.<br>References Salole, E.G., Anal. Profiles Drug Subs., 15, 283 (1986), Lievertz, R.W., et al.: Am. J. Obstret. Gynecol., 156, 1289 (1987), Kuhnz, W., et al.: Arzneim.-Forsch., 43, 966 (1993),<br></p>

<p>Applications A pregnane steroid, its acetonide is used as anti-inflammatory drug (topical) and combination with enanthate as injectable contraceptive.<br>References Hydorn, A., et al.: Steroids, 3, 493 (1964), Plesner, R., et al.: Acta Endorcinol., 61, 494 (1969),<br></p>

<p>Applications A metabolite of 17β-Estradiol.<br>References Cushman, M., et al.: J. Med. Chem., 38, 2041 (1995), D’Amato, R.J., et al.: Proc. Natl. Acad. Sci. USA, 91, 3964 (1994), Forsis, T., et al.: Nature, 368, 237 (1994)<br></p>

<p>Applications Gestrinone is a Steroidal antiestrogen, antiprogestogen, analog of Norgestrienone. Antigonadotropin.Controlled substance.<br>References Azadian-Boulanger, G., et al.: Am. J. Obstet. Gynecol., 125, 1049 (1976), Thomas, E.J., et al.: Br. Med. J., 294, 272 (1987), Coutinho, E.M., et al.: Fertil. Steril., 49, 418 (1988),<br></p>

<p>Applications Δ1-Adrenosterone is a derivative of Adrenosterone (A305600), and is suspected to have some inhibitory effects on estrogen biosynthesis in human placental microsomes. Δ1-Adrenosterone also has potential androgenic anabolic and antiuterotropic activity.<br>References Lodge, B., et al.: Can. J. Pharm. Sci., 10, 107 (1975); Lodge, B., et al.: Can. J. Pharm. Sci., 11, 95 (1976); Schwarzel, W., et al.: Endocrinology, 92, 866 (1973)<br></p>

<p>Impurity Fluocinolone Acetonide EP Impurity C<br>Applications Fluocinolone, is a medication, used to treat the itching, redness, dryness, crusting, scaling, inflammation, and discomfort of various skin condition. It is also a derivative of Fluocinolone Acetonide (F455800).<br>References Sammul, et al.: J. Assoc. Off. Agric. Chem., 47, 952 (1964), Emerson, M.V., et al.: BioDrugs, 21, 245 (2007),<br></p>

<p>Applications A derivative of Danazol (D145000).<br>References Manson, A.J., et al.: J. Med. Chem., 6, 1 (1963), Jordan, V.C., et al.: Endocrinology, 124, 1717 (1989),<br></p>

<p>Applications (6α,11β,16α)-21-(Acetyloxy)-6,9-difluoro-11,16,17-trihydroxypregna-1,4-diene-3,20-dione is an impurity of Fluocinolone Acetonide, Glucocorticoid; anti-inflammatory.<br>References Sammul, et al.: J. Assoc. Off. Agric. Chem., 47, 952 (1964), Emerson, M.V., et al.: BioDrugs, 21, 245 (2007),<br></p>

<p>Applications Prednisolone (P703740) metabolite.<br>References Garg, V., et al.: Biopharm. Drug Disposition, 15, 163 (1994), Adham, N., et al.: Proc. Biochem., 38, 897 (2003),<br></p>

<p>Applications Betamethasone 17-Butyrate is an impurity of Clobetasone 17-Butyrate (C583550), an glucocorticoid used for anti-inflammatory purposes.<br></p>

<p>Applications Estradiol acetate is used a reactant in the preparation of a modifier conjugate through a physiologically cleavable bond for enhanced drug transport across membranes.<br>References Hale, R., et al.: PCT Int. Appl. (1993), WO 9325197 A1 19931223.<br></p>

<p>Applications Eplerenone 7-Carboxylic Acid is an impurity of Eplerenone (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>Impurity Norethindrone EP Impurity E<br>Applications (17α)-3-Ethynyl-19-norpregna-3,5-dien-20-yn-17-ol (Norethindrone EP Impurity E) is an impurity of Norethindrone (N676000).<br></p>

<p>Impurity Betamethasone Dipropionate EP Impurity G<br>Applications Betamethasone Tripropionate (Betamethasone Dipropionate EP Impurity G) is a Betamethasone (B327000) related compound.<br>References Grootveld, M., et al.: Biochem. Pharmacol., 37, 271 (1988), Chen, B., et al.: Steriods, 74, 30 (2009), Mikami, E., et al.: J. Pharm. Biomed. Anal., 28, 261 (2002),<br></p>

<p>Applications Cortisone (C696500) derivative.<br></p>

<p>Applications Norgestrel (N689500) impurity.<br></p>

<p>Applications Labelled Limaprost (L461500). Limaprost is an analog of Prostaglandin E1 with structural modifications intended to give it a prolonged half-life and greater potency. Limaprost is used as an antianginal.<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 Tsuboi, T., et al.: Arch. Int. Pharmacodyn., 247, 89 (1980), Adaikan, P.G., et al.: Prostaglandins Med., 6, 449 (1981), Kottegoda, S.R., et al.: Prostaglandins Leukotrienes Med., 8, 343 (1982), Ishizaki, T., et al.: Chest, 85, 382 (1984),<br></p>

<p>Stability Light Sensitive<br>Applications A synthetic, nonsteroidal estrogen.<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 Al-Badr, A.A., et al.: Anal. Profiles Drug Subs., 19, 145 (1990),<br></p>

<p>Impurity Cyproterone Acetate EP Impurity F<br>Applications Cyproterone (Cyproterone Acetate EP Impurity F) is an antiandrogen, suppresses Testosterone and its metabolites. Derivatives of Cyproterone are administered to patients suffering from hypersexuality and to help facilitate the sexual transformation of male-to-female transsexuals.<br>References Gracia, T., et al.: Toxicol. App. Pharmacol., 225, 142 (2007), Ahlin, G., et al.: J. Med. Chem., 51, 5932 (2008), Gohil, V., et al.: Nat. Biotechnol., 28, 249 (2010), Bovee, T., et al.: J. Steroid Biochem. Mol. Biol., 118, 85 (2010),<br></p>

<p>Applications 6α-Spiro[androsta-1,4-diene-6,2'-oxiran]-3,17-dione is a metabolite of exemestane (E957000). Exemestane is 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 Labelled Cyproterone (C989090). An antiandrogen, suppresses Testosterone and its metabolites. Derivatives of Cyproterone are administered to patients suffering from hypersexuality and to help facilitate the sexual transformation of male-to-female transsexuals.<br>References Gracia, T., et al.: Toxicol. App. Pharmacol., 225, 142 (2007), Ahlin, G., et al.: J. Med. Chem., 51, 5932 (2008), Gohil, V., et al.: Nat. Biotechnol., 28, 249 (2010), Bovee, T., et al.: J. Steroid Biochem. Mol. Biol., 118, 85 (2010),<br></p>

<p>Impurity Abiraterone Impurity 5<br>Applications 17-Iodo-androsta-5,16-diene-3β-ol is an analog of Abiraterone (A108490) and is used as a reagent in the synthesis of C-17-heteroaryl steroidal CYP17 inhibitors/antiandrogens which exhibit antitumor activity. Abiraterone Impurity 5<br>References Handratta, V.D., et al.: J. Med. Chem., 48, 2972 (2005)<br></p>

<p>Applications Testosterone Undecylenate is an ester metabolite of Testosterone (T155000), which is the main hormone of the testes, produced by the interstitial cells. It is a major circulating androgen; converted by 5α-reductase in androgen-dependent target tissues to 5α-dehydrotestosterone that is required for normal male sexual differentiation. Also converted by aromatization to Estradiol.<br>References McFarland, K., et al.: Science, 245, 494 (1989); Heckert, L., et al.: Mol. Endocrinol., 12, 1499 (1998); Themmen, A., et al.: Endocr. Rev. 21, 551 (2000); Kumar, R., et al.: Biol. Reprod., 65, 710 (2001);<br></p>

<p>Applications di(2-Hydroxy Atorvastatin-d5) Calcium Salt is the labeled analogue of di(2-Hydroxy Atorvastatin) Calcium Salt (H828930), a metabolite of Atorvastatin Calcium Salt (A791750), 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>References Kearney, A.S., et al.: Pharm. Res., 10, 1461 (1993); Heinonen, T.M., et al.: Clin. Ther., 18, 853 (1996); Whitfield, L.R., et al.: Eur. J. Drug Metab. Pharmacokinet., 25, 97 (2000)<br></p>

<p>Applications An epimer of Pregnenolone (P712200), a GABAA antagonist and increases neurogenesis in the hippocampus.<br>References Li, W. et al.: J, Pharmacol. Exp. Therap., 323, 236 (2007); Sunol, C. et al.: J. Med. Chem., 49, 3225 (2006);<br></p>

<p>Applications A corticosteroid (derivative of prednisolone), approved for the treatment of post-operative ocular inflammation.<br>References Kapp, A., et al.: J. Allergy and Clin. Immunol., 110, 277 (2002), Yasueda, S., et al.: J. Pharm. Biomed. Anal., 30, 1735 (2003), Yamaguchi, M., et al.: Int. J. Pharm., 301, 121 (2005),<br></p>

<p>Applications Exemestane is 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 Estradiol 17β-sulfate is a naturally occuring steroid in whihc can be converted into Estradiol(E888000)<br>References Takanashi, K., et al.: Steroids., 68, 383-392 (2003)<br></p>

<p>Applications A metabolite of Etonogestrel.<br></p>

<p>Applications The 17β-metabolite of Equilin (E592800).<br>References Enmark, E., et al.: J. Clin. Endocrinol. Metab., 82, 4258 (1997), Wang, Z., et al.: J. Med. Chem., 43, 2419 (2000), Jiang, X., et al.: Steroids, 71, 334 (2006),<br></p>

<p>Applications Prednisolone 21-β-D-Glucuronide Sodium Salt is a metabolite of Prednisolone (P703740).<br>References Hutzler, J., ET AL.: Drug Metab. Dispos., 30, 355 (2002), Sugiyama, D., et al.: J. Biol. Chem., 278, 43489 (2003), Hagenbuch, B., et al.: Xenobiotica, 38, 778 (2008),<br></p>

<p>Applications Dexamethasone 9,11-Epoxide-d5, is the labeled analogue of the unlabeled (D298795 ), a Dexamethasone intermediate.<br>References Isogai, M., et al.: J. Steroid Biochem. Mol. Biol., 44, 141 (1993),<br></p>

<p>Applications 11-Dehydrocorticosterone is a precursor to corticosterone (C695700), converted by 11β-hydroxysteroid dehydrogenase type 1 (11β-HSD1) which plays a role in glucocorticoid-induced insulin resistance.<br>References Morgan, S. et al.: Diabetes, 58, 2506 (2009);<br></p>

<p>Applications Tetrahydrocorticosterone is a urinary steroid metabolite that decreases in postmenopausal women with osteoporosis. Tetrahydrocorticosterone is a potential biomarker of pathol. adrenal function.<br>References Poor, V., et. al.: Chromatographia, 60, S165 (2004); Kotlowska, A., et. al.: J. Chromatogr. B, 879, 359 (2011)<br></p>

<p>Applications 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>Impurity Prednisolone EP Impurity G<br>Applications 20(S)-Hydroxy Prednisolone (Prednisolone EP Impurity G) is a Prednisolone (P703740) metabolite.<br>References Kim, H., et al.: J. Med. Chem., 30, 2239 (1987), Addison, R., et al.: J. Steroid Biochem., Mol. Biol., 39, 83 (1991),<br></p>

<p>Applications ∆4-Tibolone derivative. A potential impurity of ∆4-Tibolone (T437505).<br>References Grunwell, J.F., et al.: Steroids, 27, 759 (1976),<br></p>