Steroids and Derivatives

Applications 1,2-Dihydro Triamcinolone is a derivative of Triamcinolone (T767165), a glucocorticoid, antiasthmatic (inhalant); antiallergic (nasal).
References Florey, K., et al.: Anal. Profiles Drug Subs., 1, 397 (1972); Bernstein, I.L., et al.: Chest, 81, 20 (1982);

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.
References Phillips, A., et al.: Steroids, 55, 373 (1990); Rabiolo, A., et al.: Arch. Gynecol. Obstet., 294, 1317 (2016)

Applications Labelled Cortisol-d4 21-Sulfate (C696320). Cortisol 21-Sulfate is a phase II metabolite of Cortisol (H714615).
References Spielgelhalder, B., et al.: J. Steroid Biochem., 7, 749 (1976), Vanluchene, E., et al.: J. Chromatogr., 456, 175 (1988), Choi, M., et al.: Steroids, 65, 54 (2000),

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

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

Applications Betamethasone 21-Acetate-d3, is the labeled analogue of Betamethasone 21-Acetate (B327025), which 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 Temperature Sensitive
Applications An epoxy impurity of the selective FP prostaglandin receptor agonist Travoprost (T715600).

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

Applications Ulipristal is a selective progesterone receptor modulator. Ulipristal is used as an emergency contraceptive.
References Gronemeijer, H., et al.: J. Steroid Biochem., 40, 271 (1991), Spitz, I., et al.: Contraception, 48, 403 (1993), Conneely, O., et al.: Steroids, 68, 771 (2003), Chwalisz, K., et al.: Endocr. Rev., 26, 423 (2005),

Applications 10β-Hydroxy D-(-)-Norgestrel is an impurity of Levonorgestrel (N689510).
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);

Applications 6β-Hydroxy Betamethasone can be used as analyte in analytical study for detecting betamethasone metabolites in human urine using liquid chromatography coupled to tandem mass spectrometry.
References Matabosch, X., et al.: Drug Testing and Analysis, 7, 663-672 (2015)

Applications Finasteride Carboxylic Acid Methyl Ester is an metabolite of Finasteride (F342000), an inhibitor of 5α-reductase, the enzyme which converts testosterone to the more potent androgen, 5α-dihydrotestosterone.
References Koronkowski, M.J., et al.: Pharmacotherapy, 13, 309 (1993), Tenover, J.L., et al.: Clin. Ther., 19, 243 (1997), McConnell, J.D., et al.: N. Engl. J. Med., 338, 557 (1998),