Steroids and Derivatives

Applications Dihydro Dutasteride is an impurity arose during the process development of Dutasteride (D735000).
References Solomons, W., et al.: J. Pharma. Sci., 63, 19 (1974), Rasmusson, G., et al.: J. Med. Chem., 29, 2298 (1986),

Applications 20β-Dihydrocortisone is a metabolite of Cortisol (H714615), a steroid hormone, more specifically a glucocorticoid, produced by the zona fasciculata of the adrenal gland. Cortisol is released in response to stress and a low level of blood glucocorticoids. Its primary functions are to increase blood sugar through gluconeogenesis; suppress the immune system; and aid in fat, protein and carbohydrate metabolism.
References Reach, G., et. al.: Steroids, 30, 621 (1977); Vigore, L., et al.: Cancer Ther., 6, 699 (2008); Puurunen, J., et al.: J. Clin. Endocrinol. Metab., 94, 1973 (2009); Lemos, D., et al.: J. Endocrinol., 201, 275 (2009); Chen, S., et al.: Am. J. Physiol., 296 (2009)

Applications 6β-Hydroxy-11-deoxycortisol is a corticosteroid which is a metabolite of Cortisol (H714615), a steroid hormone, more specifically a glucocorticoid, produced by the zona fasciculata of the adrenal gland. Cortisol is released in response to stress and a low level of blood glucocorticoids.
References Vigore, L., et al.: Cancer Ther., 6, 699 (2008), Puurunen, J., et al.: J. Clin. Endocrinol. Metab., 94, 1973 (2009), Lemos, D., et al.: J. Endocrinol., 201, 275 (2009), Chen, S., et al.: Am. J. Physiol., 296 (2009),

Applications Cardiotonic.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Aronson, J.K., et al.: Clin. Pharmacokinet, 5,137 (1980), Foss, P.R.B., Anal. Profiles Drug Subs., 9, 207 (1980),

Applications Isotope labelled intermediate in the synthesis of Dexamethasone (D298800), a glucocorticoid anti-inflammatory agent.
References Liu, Y., et al.: Anal. Bioanal. Chem., 395, 591 (2009), Rodgers, A., et al.: Chem. Res. Toxicol., 23, 724 (2010), Gohil, V., et al.: Nat. Biotechnol., 28, 249 (2010),

(1α)-17-(Acetyloxy)-6-chloro-1-(chloromethyl)-pregna-4,6-
diene-3,20-dione; 6-Chloro-1α-(chloromethyl)-17-
hydroxypregna-4,6-diene-3,20-dione Acetate; Cyproterone
Acetate EP Impurity C

Applications 5α-Androstanedione is a metabolite of Androstendione (A637550). 5α-Androstanedione is an important intermediate in the conversion of Androstenedione to Androstanolone (A637540).
References Milewich, L., et al.: J. Steroid Chem., 16, 81 (1982); Stanczyk, F. Z., et al.: J. Steroid Biochem. Mol. Biol., 37, 129 (990);

Applications A synthetic progestational agent used in veterinary medicine for the control of estrus in mares.
References Machnik M. et al.: J. Vet. Phamacol. Therap., 30, 86 (2007); Goncalves dos Santos, J.M. et al.: Anim. Reprod. Sci., 84, 407 (2004);

Applications A metabolite of Cortisone (C696500).
References Mashkovskii, M., et al.: Med. Agents, 2, 34 (2002),

Applications Cortisone (C696500) derivative.

Applications 20α-Dihydrodydrogesterone is the major active metabolite of dydrogesterone (D826000).
References Olbrich, M., et al.: Xenobiotica, 46, 868-874 (2016)

Impurity Estradiol EP Impurity A/ Ethinylestradiol EP Impurity C
Applications Estrone is a metabolite of 17β-Estradiol (E888000). During the metabolism, it is in rapid equilibrium with Estriol (E888960) and 17β-Estradiol (E888000) (1). Causes the feminization of male fish at human and animal waste sites (2).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.
References 1. Both, D. et al.: Anal. Prof. Drug Subst. 1983 12 pp135-1892. Goodman-Gruen, D. et al.: J. Clin. Endocrinol. Metab. 1996 Aug;81(8):2999-3003.

Impurity Levonorgestrel EP Impurity L
Applications D-Ethyl Gonendione (Levonorgestrel EP Impurity L) is a Norgestrel intermediate.
References Hiraga, K., et al.: Chem. Pharm. Bull., 13, 1289 (1965), Bergink, F.W., et al.: J. Steroid Biochem., 14, 175 (1981), Phillips, A., et al.: Contraception, 36, 181 (1987), Corson, S.L., et al.: Am. J. Obstet. Gynecol., 168, 1017 (1993),

Stability Hygroscopic
Applications Equilin 3-Sulfate Sodium Salt, is a metabolite of Equilin (E592800).
References Hajdu, A., et al.: Experientia, 27, 956 (1971), Adams, W.P., et al.: J. Pharma. Sci., 68, 986 (1979),

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.
References Sammul, et al.: J. Assoc. Off. Agric. Chem., 47, 952 (1964), Emerson, M.V., et al.: BioDrugs, 21, 245 (2007),

Applications Labelled Estradiol (E888000) derivative. An estrogen.
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),

Applications Isotope labelled Ethynyl Estradiol (E685100), an oral contraceptive (1), is a synthetic steroid with high oral estrogenic potency. Used in estrogen replacement therapy (2). 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.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References 1. Koetsawang, S. et al.: Contraception. 1982 March:25(3) p231-2412. Cuttler, L. et al.: J. Endocrinol. Metab. 1985 Jun;60(6):1087-92.

Impurity Finasteride EP Impurity B
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.
References Bakshi., et al.: J. Med. Chem., 38, 3189 (1995),

Applications Dihydrodigoxin is a cardioinactive metabolite of Digoxin (D446575) that gets excreted in the urine after Digoxin administration in humans.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Clark, D.R., et al.: Drug Metab. Dispos., 2, 148 (1974); Reuning, R.H., et al.: Drug Metab. Dispos., 13, 51 (1985); Butler, V.P., et al.: Pharmacology, 221, 123 (1982)

Applications The 17β-metabolite of Equilin (E592800).
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),

Stability Light Sensitive
Applications A synthetic, nonsteroidal estrogen.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Al-Badr, A.A., et al.: Anal. Profiles Drug Subs., 19, 145 (1990),

Applications Isotope labelled Estrone (E889050), which is a metabolite of 17β-Estradiol (E888000). During the metabolism, it is in rapid equilibrium with Estriol (E888960) and 17β-Estradiol (E888000) (1). Causes the feminization of male fish at human and animal waste sites (2).Drinking water contaminant candidate list 3 (CCL 3) compound as per United States Environmental Protection Agency (EPA), environmental, and food contaminants.
References 1. Both, D. et al.: Anal. Prof. Drug Subst. 1983 12 pp135-1892. Goodman-Gruen, D. et al.: J. Clin. Endocrinol. Metab. 1996 Aug;81(8):2999-3003.

Applications (25R)-26-Hydroxycholesterol is a desmosterol metabolite that is found in the brain. 26-Hydroxycholesterol has been used as a biomarker for carbon cycling in the northwestern Mediterranean Sea.
References Meljon, A., et. al.: J. Lipid Res., 53, 2469 (2012); Christodoulou, S., et. al.: Marine Chem., 113, 25 (2009)

Stability Hygroscopic
Applications 16α-Hydroxyprrogesterone is a hydroxylated metabolite of Progesterone (P755900). 16α-Hydroxyprogesterone binds to human progesterone receptors hPR-A and hPR-B and act as an agonist for both receptors.
References Ikonen, M. et al.: Nature, 212, 716 (1966); Storbeck, K.-H. et al.: Mol. Cell. Endocrinol., 336, 92 (2011);

Impurity Ethinylestradiol EP Impurity B
Applications 9,11-Dehydro Ethynyl Estradiol (Ethinylestradiol EP Impurity B) is a degradation product of Ethynyl Estradiol (EE); an impurity of Ethynyl Estradiol (E685100).
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Pang, C., et al.: Steroids, 23, 203 (1974), Leese, M., et al.: J. Med. Chem., 49, 7683 (2006), Krstic, N., et al.: Steroids, 72, 406 (2007),

Impurity Cyproterone Acetate EP Impurity F
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.
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),

Applications The major metabolite of Deflazacort.
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),

Applications A metabolite of Androstenedione (A637550).
References Gazdar, A., et al.: Cancer Res., 50, 5488 (1990), Levesque, J., et al.: Steroids, 70, 305 (2005), Lootens, L., et al.: Drug Metab. Dispos., 37, 2367 (2009),

Applications Prednisolone 21-β-D-Glucuronide Sodium Salt is a metabolite of Prednisolone (P703740).
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),

Stability Isomerizes rapidly in Benzene, Chloroform, and Ether.Keep Shielded from light.
Applications A synthetic, nonsteroidal estrogen.Recomended solvents are DMSO, DMF and ethanol, even in these solvents do not store in solution for any prolonged period of time.
References White, W. A. et. al.: J. Agric. Food Chem. 19(2), 388-390 (1971).

Impurity Levonorgestrel EP Impurity H
Applications 6β-Hydroxylevonorgestrel (Levonorgestrel EP Impurity H) is an impurity from the synthesis of Levonorgestrel (N689510), an oral contraceptive.
References Hu. S.H., et al.: Steroids., 63, 88 (1998); Nash, H.A., et al.: J. Pharma. Sci., 93, 2420 (2004); Choudhary, M.I., et al.: Natural. Prod. Res., 20, 1074 (2006);

Stability Light Sensitive, Temperature Sensitive
Applications A metabolite of Vitamin D, a possibly anti-inflammatory steroid.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Boyan, B., et al.: Steroids, 66, 363 (2001), Holick, M., et al.: J. Cell Biochem., 88, 296 (2003), Vogeser, M., et al.: Clin. Chem., 50, 1415 (2004), Singh, R., et al.: J. Clin. Endocrinol. Metab., 91, 3055 (2006),

Applications Betamethasone acetate (BA) is a glucocorticoid steroid with anti-inflammatory and immunosuppressive properties which can be used in treatment of asthma and itching.
References Kerns, E., et al.: J. Pharm. Sci., 90, 1838 (2001), Seidler, J., et al.: J. Med. Chem., 46, 4477 (2003), Alsenz, J., et al.: J. Pharm. Sci., 96, 1748 (2007),

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

Applications Estriol Trisulfate Trisodium Salt (cas# 100940-55-4) is a compound useful in organic synthesis.

Stability Hygroscopic
Applications A metabolite of Estradiol (E888000).
References Agasan, A., et al.: J. Immunol. Methods., 177, 251 (1994), Stone, R., et al.: Science, 265, 308 (1994), Tacey, R., et al.: J. Pharm. Biomed. Anal., 2, 1303 (1994),

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

Applications A metabolite of Norgestimate. 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.
References Phillips, A., et al.: Steroids, 55, 373 (1990)

Applications A potent inhibitor of estrone sulfatase. Inhibits estrone sulfatase >99% at 0.1uM in intact MCF-7 cells, IC50=65pM.
References Woo, L.W., et al.: J. Med. Chem., 41, 1068 (1998)

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.
References Morgan, S. et al.: Diabetes, 58, 2506 (2009);

Applications 2-Methoxy-17α-ethynyl Estradiol is a metabolite of the potent synthetic estrogen 17α-Ethynylestradiol (E685100).
References Maggs, J.L. et al.: Xenobiotica, 13, 421 (1983); Maggs, J.L. et al.: Biochem. Pharmacol., 32, 2793 (1983); Abdel-Aziz, M.T. et al.: Steroids, 15, 695 (1970);

Applications Isotope labelled testosterone enanthate is a derivative of testosterone (T155000), the principal hormone of the testes, produced by the interstitial cells.
References Janjic, M.M., et al.: Reproduct. Toxicol., 34, 686 (2012); Lacreuse, A., et al.: Physiol. Behaviour., 106, 229 (2012);

Applications A glucocorticoid microemulsion nasal preparation allergy inhibitor rhinitis.
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),

Applications Spironolactone-d3 is the labeled analogue of Spironolactone (S683000), a synthetic 17-lactone steroid which is a renal competitive aldosterone antagonist in a class of pharmaceuticals called potassium-sparing diuretics, used primarily to treat ascites in patients with liver disease, low-renin hypertension, hypokalemia, and Conn’s syndrome.
References Sutter, J.L., et al.: Anal. Profiles Drug Subs., 4, 431 (1975)

Applications Palovarotene, is a highly selective retinoic acid receptor gamma (RAR-γ) agonist that is under investigation as a potential treatment for emphysema.
References Hind, M., et al.: Curr. Opinion Invest. Drugs, 10(11), 1243 (2009); Stolk, J., et al.: Therap. advances Respi. dise., 4, 319 (2010);

Applications 5α-Pregnane-3β,20(S)-diol, is a metabolite of Progesterone (P755900).
References Beall, et al.: Biochem. J., 31, 35 (1937), Okuda, A., et al.: J. Biol. Chem., 259, 7519 (1984), Russell, D., et al.: Biochemistry, 31, 4737 (1992), Kondo, K., et al.: Eur. J. Biochem., 219, 357 (1994), Westerbacka, J., et al.: J. Clin. Endocrinol. Metab., 88, 4924 (2003),

Applications A labelled metabolite of Estradiol.
References Bucala, R., et al.: J. Clin. Endocrinol. Metab., 60, 841 (1985), Telang, N., et al.: Anticancer Res., et al.: 11, 1021 (1991), Seeger, H., et al.: Med. Sci. Res., 26, 481 (1998), Bolton, J., et al.: Chem. Res. Toxicol., 13, 135 (2000),

Applications 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.
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),

Applications 2-Nitrobenzotrifluoride can be used for self-repairing polyimide based on dynamic imine bond.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Lei, X., et.al., Faming Zhuanli Shenqing, 15, (2019);

Applications Dutasteride α-Dimer is a dimer impurity of Dutasteride (D735000); a dual inhibitor of 5α-reductase isoenzymes type 1 and 2. Dutasteride is structurally related to Finasteride (F342000) and is used in the treatment of benign prostatic hyperplasia.
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)

Applications Anti-inflammatory.
References Buchwald, P., et al.: Steroids, 73, 193 (2008), Holbeck, S., et al.: Mol. Endocrinol., 24, 1287 (2010),

Impurity Clobetasol Propionate EP Impurity C
Applications 21-Chloro-9-fluoro-11β,17-dihydroxy-16α-methylpregna-1,4-diene-3,20-dione 17-Propionate (Clobetasol Propionate EP Impurity C) is an impurity of Clobetasol 17-Propionate (C583500), an topical corticosteroid with anti-inflammatory properties.
References Sugai, S., et al.: Chem. Pharma. Bull., 31, 12 (1983);

Stability Hygroscopic
Applications 4-Hydroxy Estrone 1-N7-Guanine is an estrogen metabolite formed with DNA which can lead to the mutations that initiate breast, prostate, and other types of cancer. Estrogen-DNA depurinating adducts as biomarkers of cancer risk and their use in cancer detection and prevention.
References Chakravarti, D., et al.: Mutat. Res., 456, 17 (2000), Liehr, J., et al.: Endocr. Rev., 21, 4054 (2000), Chakravarti, D., et al.: Oncogene, 20, 7945 (2001), Cavalieri, E., et al.: Chem. Res. Toxicol., 14, 1041 (2002),

Applications A metabolite of Mifepristone.
References Heikinheimo, O., et al.: J. Steroid Biochem., 26, 279 (1987), Brogden, R., et al.: Drugs, 45, 384 (1993), Shi, Y., et al.: Contraception, 48, 133 (1993), Jang, G., et al.: Biochem. Pharmacol., 52, 753 (1996), Gainer, E., et al.: Steroids, 68, 1005 (2003),

Stability Hygroscopic
Applications A deuterated 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.
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),

Applications Pregnenolone Carbonitrile is a glucocorticoid receptor antagonist that induces the expression of the CYP3A family of steroid hydroxylases and modulates sterol and bile acid biosynthesis in vivo. Pregnenolone Carbonitrile is an an activator of rat pregnane X receptor (PXR).
References Kliewer, S.A., et. al.: Cell, 92, 73 (1998); Savas, U., et. al.: Drug Metab. Dispos., 28, 529 (2000)

Applications 5β-Finasteride is an azasteroid and 5β-isomeric impurity of Finasteride (F342000).
References Cendrowska, I. et al.: J. Liq. Chrom. Rel. Technol., 22, 2259 (1999);

Applications Labelled Medroxyprogesterone, an orally active progestogen used in hormone replacement therepy (HRT), in the past has been used as a component of oral contraceptives.
References Pan, Q., et al.: Mol. Hum. Reprod., 13, 797 (2007), Matsson, P., et al.: J. Pharmacol. Exp. Ther., 323, 19 (2007), Jukosky, J.A., et al.: Bull. Environ. Contam. Toxicol., 81, 230 (2008), Cherkasov, A., et al.: J. Med. Chem., 51, 2047 (2008),

Applications Secondary metabolite of Cholesterol.
References Notaro, G., et al.: J. Nat. Prod., 55, 1588 (1992), Aydogmus, Z., et al.: Nat. Prod. Res., 18, 43 (2004), Mao, S., et al.: J. Nat. Prod ., 69, 1209 (2006), Shoji, T., et al.: J. Agric. Food Chem., 54, 884 (2006),

Applications A metabolite of Digoxin (Dx) (D446575).
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Fujii, Y., et al.: Clin. Chem., 37, 476 (1991), Salphati, L., et al.: Xenobiotica, 29, 171 (1999), Song, S., et al.: Drug Metab. Dispos., 27, 689 (1999),

Applications Testosterone Enanthate is a derivative of testosterone (T155000), the principal hormone of the testes, produced by the interstitial cells.
References Janjic, M.M., et al.: Reproduct. Toxicol., 34, 686 (2012); Lacreuse, A., et al.: Physiol. Behaviour., 106, 229 (2012);

Applications 17α-Hydroxy-5α-androstan-3-one is a metabolite of epi-testosterone (T155005). It functions similar to other testosterone analogs, maintaining cell conformation in epithelial cells.
References Sinowatz, F. et al.: J. Endocrinol., 73, 53 (1977);

Applications 4’-Hydroxy Dutasteride is an impurity of Dutasteride (D735000), 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.
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)

Applications A steroid produced by females having pheromone activities.
References Kotiyan, P., et al.: J. Pharm. Biomed. Anal., 22, 667 (2000), Bensafi, M., et al.: Behaviour. Brain Res., 152, 11 (2004), Zhu, B., et al.: Endocrinol., 147, 4132 (2006), Bellavance, E., et al.: J. Med. Chem., 52, 7488 (2009),

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

Impurity Levonorgestrel EP Impurity C
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.

Applications 9α-Bromodesonide is a bromo derivative of Desonide (D296940); an anti-inflammatory agent.
References Phillips, et al.: Toxicol. Appl. Pharmacol., 20, 522 (1971); Sanen, F.J., et al.: Int. J. Clin. Pharmacol. Biopharm., 12, 174 (1975); Tarayre, J.P., et al.: Pharmacol., 19, 323 (1979)

Stability Hygroscopic
Applications A degradation product of Betamethasone (B327000).
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),

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.
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),

Applications Quinestrol is an estrogen-like compound.

Applications Protected Estradiol.
References Miilunpohja, M., et al.: J. Steroid Biochem. Mol. Biol., 100, 59 (2006), Ikonomou, M., et al.: Environ. Toxicol. Chem., 27, 243 (2008),

Applications 7-Keto Cholesterol is a metabolite of Cholesterol.
References Wang, J., et al.: Biochemistry, 43, 1010 (2004), Lemaire-Ewing, S., et al.: Cell Biol. Toxicol., 21, 97 (2005), Fuda, H., et al.: J. Lipid Res., 48, 1343 ( 2007), Sasaki, H., et al.: Metabolism, 56, 357 (2007),

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

Applications 11-Ketoprogesterone is a metabolite of Progesterone which is a steroid hormone Inducing maturation and secretory activity of the uterine endothelium. Progesterone is implicated in the etiology of breast cancer.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
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),

Applications A labelled metabolite of Budesonide (B689490), a non-halogenated glucocorticoid related to triamcinolone hexacetonide. Used as an antiinflammatory agent.
References Ryrfeldt., A., et a.: J. Steroid Biochem., 10, 317 (1979), Roth, G., et al.: J. Pharm. Sci., 69, 766 (1980), Edsbaecker, S., et al.: Drug Metab. Dispos., 15, 412 (1987),

Applications A metabolite of Estradiol.
References Bucala, R., et al.: J. Clin. Endocrinol. Metab., 60, 841 (1985), Telang, N., et al.: Anticancer Res., et al.: 11, 1021 (1991), Seeger, H., et al.: Med. Sci. Res., 26, 481 (1998), Bolton, J., et al.: Chem. Res. Toxicol., 13, 135 (2000),