Stéroïdes

Impurity Beclomethasone Dipropionate EP Impurity H
Applications Beclomethasone 17-Propionate (Beclomethasone Dipropionate EP Impurity H) is an active metabolite of Beclomethasone Dipropionate (BDP).
References Soria, I., et al.: Biopharm. Drug Dispos., 19, 297 (1998), Harrison, L., et al., J. Pharm. Pharmacol., 51, 1235 (1999), Daley-Yates, P., et al.: Br. J. Clin. Pharm., 51, 400 (2001).

Applications A degradation and metabolic intermediate of Betamethasone (B3270000).

Applications Trestolone acetate is a derivative of Trestolone (T719600), a synthetic androgen used as a potential hormonal male contraceptive method that induces a state of temporary infertility.
References Garcia-Becerra, R., et al.: Reproduction., 143, 211 (2012); Attardi, B.J., et al.: J. Steroid. Biochem. Molec. Biol., 122, 212 (2010)

Applications Metabolite of 5α-Androst-16-en-3β-ol
References Gower, D., et al.: J. Steroid Biochem. Mol. Biol., 63, 81 (1997), Zorko, M., et al.: Steroids, 65, 46 (2000), Diel, P., et al.: Toxicol. Lett., 169, 64 (2007),

Stability Light Sensitive
Applications 3-(4-Hydroxyphenyl)-1,1,3-trimethyl-5-indanol is a compound derived from Bisphenol A (B519495), a chemical used in the manufacturing of polycarbonate plastics that has effects on reproductive health, body weight, and plasma LH levels in female Sprague-Dawley rats.
References Calafat, A., et al.: Environ. Health Persp., 116, 39 (2008); Rubin, B., et al.: Environ. Health Persp., 109, 675 (2001)

Impurity Beclomethasone Dipropionate EP Impurity A
Applications Beclomethasone 21-Propionate (Beclomethasone Dipropionate EP Impurity A) is a metabolite of Beclomethasone Dipropionate (BDP).
References Foe, K., et al.: Biopharm. Drug Disposition, 19, 1 (1998), Harrison, L., et al.: Eur. J. Clin. Pharmacol., 58, 197 (2002),

Applications A metabolite of Mifepristone (M343975).
References Ringler, I., et al.: Metabolism, 13, 37 (1964), Gagne, D., et al.: J. Steroid. Biochem., 25, 315 (1986), Jang, G., et al.: Biochem. Pharmacol., 52, 753 (1996), Hild, S., et al.: Hum. Reprod., 15, 822 (2000), Gainer, E., et al.: Steroids, 68, 1005 (2003),

Applications Betamethasone 6α-Bromo 17-Valerate is an impurity of Betamethasone (B327000), which is a glucocorticoid used as an anti-inflammatory agent.
References Ferrante, M.G., et al.: Anal. Profiles Drug Subs., 6, 43 (1977), Li, A., et al.: Chem. Biol. Interact., 142, 7 (2002), Cruz-Monteagudo, M., et al.: Eur. J. Med. Chem., 40, 1030 (2005), Rothfuss, A., et al.: Chem. Res. Toxicol., 19, 1313 (2006),

(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 Ethyl Deoxycholate is the ethyl ester of the common bile salt Deoxycholic Acid (D232645), a Cholic Acid (C432600) derivative used as a component in cell lysis buffers.
References Tuangtong, R. et al.: Dermatol. Surg., 36, 899 (2010); Araki, Y. et al.: Scand. J. Gast., 36, 533 (2001);

Impurity Norethindrone Acetate EP Impurity F
Applications 6β-Hydroxy Norethindrone Acetate (Norethindrone Acetate EP Impurity F) is an oxidative product of the drug Norethindrone (N676000). Norethindrone impurity.
References Reif, V., et al.: Pharmaceutical Res., 4, 54 (1987), Rao, P., et al.: Steroids, 59, 621 (1994),

Applications A synthetic adrenocorticosteroid that acts as an anti-inflammatory and anti-pruritic agents. It is used as a topical for the treatment of dermatologic disorders such as atopic dermatitis and psoriasis.
References Mason, J. et al.: Br. J. Dermatol., 146, 351 (2002); Sears, H.W. et al.: Clin. Therap., 19, 710 (1997); Otomo, Y.Z. et al.: Nip. Yakur. Zas., 78, 647 (1981);

Applications A bile acid derivative as anti-inflammatory and antitumor agent.
References Yasukawa, K., et al.: Chem. Pharm. Bull, 19, 573 (1996), Yasukawa, K., et al.: J. Pharm. Pharmacol., 52, 119 (2000), Iida, T., et al.: Lipids, 38, 281 (2003),

Stability Light Sensitive, Temperature Sensitive
Applications An oxidized derivative of the visual pigment carotenoid.
References Wada, A., et al.: Chem. Pharm. Bull., 56, 112 (2008), Smolensky, E., et al.: Biochem., 48, 9170 (2009),

Applications Stigmasta-3,5-diene is one of the components found in vegetable oil after refining.
References Lanzon, A., et al.: J. Am. Oil Chemist Soc., 71, 285 (1994); Cert, A., et al.: Food Chem., 49, 287 (1994)

Impurity Fluticasone USP Related Compound B
Applications An impurity of Fluticasone Propionate (F599500), a derivative of Flumethasone (F455000). An antiallergic; anti-asthmatic; anti-inflammatory. Fluticasone USP Related Compound B.
References Matuszewski, B, et al.: Anal. Chem., 75, 3019 (2003), Fekete, S., et al.: J. Pharm. Biomed. Anal., 49, 64 (2009), Meltzer, E.O., et al.: J. Allergy Clin. Immunol., 86, 221 (1990), Mitchison, H.C., et al.: Gut, 32, 260 (1991), Phillipps, G.H., et al.: J. Med. Chem., 37, 3717 (1994)