Esteróides

<p>Applications A metabolite of Mifepristone.<br>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),<br></p>

<p>Stability Light Sensitive<br>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.<br>References Calafat, A., et al.: Environ. Health Persp., 116, 39 (2008); Rubin, B., et al.: Environ. Health Persp., 109, 675 (2001)<br></p>

<p>Impurity Fulvestrant EP Impurity B<br>Applications A metabolite of Fulvestrant (F862500).<br>References Rao, P., et al.: J. Steroid Biochem., 25, 417 (1986), Wakeling, A., et al.: J. Steroid Biochem. Mol. Biol., 43, 173 (1992), DeFriend, D., et al.: Cancer Res., 54, 408 (1994),<br></p>

<p>Stability Light Sensitive<br>Applications 6α-Chloro Testosterone is a derivative of Testosterone, the principal hormone of the testes, produced by the interstitial cells. Major circulating androgen; converted by 5α-reductase in androgen-dependent target tissues to 5α-dehydrotestosterone which is required for normal male sexual differentiation. Also converted by aromatization to Estradiol.Testerone is a controlled substance (anabolic steroid). Androgen.This compound is a contaminant of emerging concern (CECs).<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 Metabolite of 5α-Androst-16-en-3β-ol<br>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),<br></p>

Pregnenolone monosulfate sodium salt is an neurosteroid, enhances NMDA receptor,CREB phosphorylation, TRPM3 channels, and may inhibit GABA A receptors.

<p>Applications Cyclofenil is a weak nonsteroidal estrogen with ovulation induction properties. Mammalian hormone.<br>References Miquel, et al.: J. Med. Chem., 6, 774 (1963),<br></p>

Polyporusterone A is a triterpene carboxylic acid extracted from the substrates of P. umbellatus and used in studies of hair regeneration and psoriasis.

<p>Applications The major metabolite of Boldenone, an anabolic steroid.<br>References Fotsis, T., et al.: J. Steroid Biochem., 28, 203 (1987), Song, Y., et al.: Arch. Pharm. Res., 23, 599 (2000), Buiarelli, F., et al.: Anal. Chim. Acta, 526, 113 (2004), Poelmans, S., et al.: Food Addit. Contam., 22, 808 (2005),<br></p>

Pregnenolone monosulfate (3β-Hydroxy-5-pregnen-20-one monosulfate) is a potent nootropic steroid used in the study of neuroticism and depression.

<p>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.<br>References Matabosch, X., et al.: Drug Testing and Analysis, 7, 663-672 (2015)<br></p>

<p>Stability Hygroscopic<br>Applications beta-Estradiol 17-(beta-D-glucuronide) sodium salt is a glucocorticosteroid analog.<br></p>

<p>Applications A metabolite of Mifepristone.<br>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),<br></p>

<p>Impurity Betamethasone Dipropionate EP Impurity J<br>Applications Betamethasone 9,11-Epoxide 17,21-Dipropionate (Betamethasone Dipropionate EP Impurity F) is an impurity of Betamethasone (B327000), an antiinflammatory agent.<br>References Shou, M., et al.: J. Pharm. Biomed. Anal., 50, 356 (2009),<br></p>

<p>Applications A metabolite of Fulvestrant (F862500).<br>References Rao, P., et al.: J. Steroid Biochem., 25, 417 (1986), Wakeling, A., et al.: J. Steroid Biochem. Mol. Biol., 43, 173 (1992), DeFriend, D., et al.: Cancer Res., 54, 408 (1994),<br></p>

<p>Applications Triamcinolone Acetonide (T767165) impurity.<br>References Laurent, H., et al.: J. Steroid Biochem., 6, 185 (1975),<br></p>

<p>Impurity Beclomethasone Dipropionate EP Impurity F<br>Applications 6α-Bromo Beclomethasone Dipropionate (Beclomethasone Dipropionate EP Impurity F) is an impurity of Beclomethasone Dipropionate (B131030).<br></p>

<p>Stability Hygroscopic<br>Applications A metabolite of Digoxin (Dx) (D446575).<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 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),<br></p>

<p>Applications An oxidative product of the drug Norethindrone (N676000). Norethindrone impurity.<br>References Reif, V., et al.: Pharmaceutical Res., 4, 54 (1987), Rao, P., et al.: Steroids, 59, 621 (1994),<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 The major 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>Stability Very Hygroscopic<br>Applications Mixed conjugate of dietary phytoestrogen.<br>References Adlercreutz, H;., et al.: J. Steroid Mol. Biol., 52, 97 (1995), Kinjo, J., et al.: Biol. Pharm. Bull., 27, 185 (2004),<br></p>

<p>Applications A metabolite of Digoxin (Dx) (D446575).<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 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),<br></p>

<p>Applications 4α-Methyl-cholest-5-en-3β-ol is a derivative of Cholesterol (C432501), a major component of all biological membranes; ~25% of total brain lipid is Cholesterol. Cholesterol is the principal sterol of the higher animals. Cholesterol was found in all body tissues, especial in the brain, spinal cord, and in animal fats or oils. Cholesterol is the main constituent of gallstones.<br>References Rosin, Z., et al.: Physiol. Chem., 124, 282 (1923), Schoenheimer, et al.: J. Biol. Chem., 105, 355 (1934), Gemant, et al.: Life Sci., 1, 233 (1962), Johnson, K., et al.: 4, 457 (1964),<br></p>

<p>Impurity Rocuronium EP Impurity C<br>Applications 17-Desacetyl Rocuronium Bromide (Rocuronium EP Impurity C) is a metabolite of Rocuronium (R639500), in human plasma.<br>References Kleef, U., et al.: J. Chromatogr., 621, 65 (1993), Proost, J., et al.: Br. J. Anaesth., 85, 717 (2000),<br></p>

<p>Stability Hygroscopic<br>Applications A bile salt formed in the liver from chenodeoxycholate and glycine, usually as the sodium salt. It acts as a detergent to solubilize fats for absorption and is itself absorbed. It is a cholagogue and choleretic.<br>References Parmentier, G. , et al.: Steroids, 30, 583 (1977), Tserng, K.Y., et al.: Lipids, 13, 479 (1978),<br></p>

<p>Impurity Estriol EP Impurity H<br>Applications 16α-Hydroxy Estrone (Estriol EP Impurity H) is a major metabolite of Estradiol.<br>References Fishman, H.G, et al.: Biochemistry, 8, 4304 (1969), Ryan, Sugar, J., et al.: J. Clin. Endocrinol. Metab., 50, 137 (1980), Numazawa, M., et al.: Steroids, 38, 149 (1981), Travis, R., et al.: Breast Cancer Res., 5, 239 (2003),<br></p>

<p>Applications (17β)​-​17-​Hydroxyandrost-​5-​en-​3-​one is a reagent in the synthesis of new hedgehog signaling inhibitors which may be used in cancer treatments.<br>References Xu, C. et al.: J. Am. Chem. Soc., 141, 5381 (2019)<br></p>

<p>Applications A novel bile acid, an analogue of Cholic acid (C432600).<br>References Yamaga, N., et al.: J. Biochem., 116, 1123 (1994),<br></p>

<p>Stability Hygroscopic<br>Applications 3-Sulfoglycolithocholic Acid Disodium Salt is a derivative of Lithocholic acid (L469180). Lithocholic acid (LCA) is a putative tumor promoter,that is shown to be able to inhibit mammalian DNA polymerase β.<br>References Ogawa, A., et al.: Jap. J. Canc. Res., 89, 1154 (1998)<br></p>

<p>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.<br>References Garcia-Becerra, R., et al.: Reproduction., 143, 211 (2012); Attardi, B.J., et al.: J. Steroid. Biochem. Molec. Biol., 122, 212 (2010)<br></p>

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

<p>Applications 4-Hydroxy Estradiol 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.<br>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),<br></p>

<p>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.<br>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);<br></p>

<p>Applications A degradation and metabolic intermediate of Betamethasone (B3270000).<br></p>

<p>Applications Amcinonide (A576150) analog as glucocorticoid receptor agonists for the treatment of inflammation and allergic conditions.<br>References Woodford, R., et al.: Curr. Ther. Res., 26, 301 (1979),<br></p>

<p>Impurity Beclomethasone Dipropionate EP Impurity D<br>Applications 9-Deschloro-9-bromo Beclomethasone Dipropionate (Beclomethasone Dipropionate EP Impurity D) is an impurity of Beclomethasone Dipropionate (B131030).<br>References Shou, M. et al.: J. Pharmac. Biomed. Anal., 50, 356 (2009); Johnston, S. et al.: J. Chrom. Sci., 48, 733 (2010);<br></p>

<p>Applications A bile acid derivative as anti-inflammatory and antitumor agent.<br>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),<br></p>

<p>Stability Hygroscopic<br>Applications It is one of the mono-hydroxylated metabolite of Stanozolol (S684500), an internal standard in doping analysis.<br>References Chung, B., et al.: J. Anal. Toxicol., 14, 91 (1990), Schanzer, W., et al.: J. Steroid Biochem., 36, 153 (1990), Phillis, B., et al.: Eur. J. Pharmacol., 398, 263 (2000)<br></p>

<p>Stability Hygroscopic<br>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.<br>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),<br></p>

<p>Applications Cholesteryl Acetate Dibromide is an brominated intermediate in the synthesis of Cholesterol (C432501) derivatives.<br>References Kandutsch, A.A., et al.: J. Biol. Chem., 249, 6057 (1974);<br></p>

<p>Applications 6-α-Hydroxy Stanozolol is a metabolite of Stanozolol (S684500), an androgenic/anabolic steroid used for treating conditions such as anaemia and hereditary angioedema.<br>References Scarth, J.P., et al.: Steroids., 75, 57 (2010); Steward, R.T., et al.: J. Steroid. Biochem. Molec. Biol., 117, 152 (2009);<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>Impurity Beclomethasone Dipropionate EP Impurity S<br>Applications Beclomethasone 11,17,21-Tripropionate (Beclomethasone Dipropionate EP Impurity S) is an impurity of Beclomethasone (B131000), a glucocorticoid. Used in chronic asthma and allergic rhinitis. Antiallergic, antiasthmatic (inhalant). Anti-inflammatory (topical).<br>References Malfitan, V.A., et al.: Clin. Ther., 4, 472 (1982), Rao, M., et al.: J. Asthma, 19, 21 (1982), Small, P., et al.: Ann. Allergy, 49, 127 (1982), Brogden, R.N., et al.: Drugs, 28, 99 (1984),<br></p>

<p>Applications N-Desmethyl Ulipristal Acetate is the N-monodemethylated analogue and metabolite of the selective progesterone receptor modulator Ulipristal Acetate (U700810). N-Desmethyl Ulipristal Acetate contributes significantly to the antiprogestational activity of its parent compound.<br>References Attardi, B.J. et al.: J. Steroid Biochem. Mol. Biol., 88, 277 (2004);<br></p>

<p>Applications A metabolite of Desogestrel.<br>References Back, D., et al.: Br. J. Clin. Pharmacol., 26, 23 (1988), Wienkers, L., et al.: Drug Metab. Dispos., 1990, 24, 610 (1990), Bourrie, M., et al.: J. Pharmacol. Exp. Ther., 277, 321 (1996), Ono, S., et al.: Xenobiotica, 26, 681 (1996),<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 Testosterone precursor and metabolite with androgenic activity. Controlled substance (anabolic steroid).<br>References Walker, V.R., et al.: Anal. Biopchem., 234, 194 (1996); King, D.S., et al.: J. Am. Med. Assoc., 281, 2020 (1999);<br></p>

<p>Stability Hygroscopic<br>Applications A 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 Androst-4-ene-3,17-dione-2,2,4,6,6,16,16-d7 is an intermediate in the synthesis of Dehydroepiandrosterone-d5 which is the labeled analogue of Dehydro Epiandrosterone (D229585). Dehydro Epiandrosterone is a major secretory steroidal product of the adrenal gland; secretion progresively declines with aging. May have estrogen-or androgen-like effects depending on the hormonal milieu. Intracellularly converted to androstenedione. It is used in treatment of menopausal syndrome.<br>References Yahara, M., et al.: J. Toxicol. Sci., 2, 161 (1977), Morales, A.J., et al.: J. Clin. Endocrinol. Metab., 78, 1360 (1994), Ebeling, P., et al.: Lancet, 343, 1479 (1994),<br></p>

<p>Impurity Beclomethasone Dipropionate EP Impurity L<br>Applications 1,2-Dihydro Beclomethasone Dipropionate (Beclomethasone Dipropionate EP Impurity L) is an impurity of Beclomethasone Dipropionate (B131030).<br></p>

<p>Impurity Fluocinolone Acetonide EP Impurity G<br>Applications Flurandrenolone Acetate, is the derivative of Flurandrenolide (F598650), which is a Glucocorticoid, used as an antipsoriatic.<br>References Pearlman, R., et al.: Int. J. Pharm., 18, 53 (1984), Neufeld, E., et al.: J. Chromatogr., 718, 273 (1998),<br></p>

<p>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.<br>References Tuangtong, R. et al.: Dermatol. Surg., 36, 899 (2010); Araki, Y. et al.: Scand. J. Gast., 36, 533 (2001);<br></p>

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

<p>Impurity Beclomethasone Dipropionate EP Impurity H<br>Applications Beclomethasone 17-Propionate (Beclomethasone Dipropionate EP Impurity H) is an active metabolite of Beclomethasone Dipropionate (BDP).<br>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).<br></p>

<p>Applications Betamethasone 6α-Bromo 17-Valerate is an impurity of Betamethasone (B327000), which is a glucocorticoid used as an anti-inflammatory agent.<br>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),<br></p>

<p>Impurity Clobetasol Propionate EP Impurity K / Betamethasone Dipropionate EP Impurity C<br>Applications Betamethasone 21-Propionate (Clobetasol Propionate EP Impurity K) 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 A metabolite of Mifepristone (M343975).<br>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),<br></p>

<p>Applications Campesteryl Ferulate is a component of γ-​oryzanol with antioxidant activities.<br>References Xu, Z., et al.: J. Agric. Food Chem., 49, 2077 (2001);<br></p>

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

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

Estrone sulfate sodium, an inactive estrogen ester, transforms into estrone via steroid sulfatase. It's studied for targeting polypeptide transporters.

<p>Applications A normal mammalian metabolite of Cortisone (C696500).<br>References Schneider, et al.: J. Biol. Chem., 183, 365 (1950), Barkemeyer, et al.: Appl. Microbiol., 8, 237 (1960),<br></p>

<p>Applications Methyl Lithocholate is an derivative of Lithocholic Acid (L469180),a cholic acid derivative as TGR5 modulator. Found in ox bile, human bile, rabbit bile, and in ox and pig gallstones.<br>References Roleira, F.M., et al.: Lett. Drug. Design. Discovery., 7, 610 (2010);<br></p>

<p>Stability Hygroscopic<br>Applications A metabolite of Cortisol (H714615).<br>References Quinkler, M., et al.: J. Clin. Endocrinol. Metab., 88, 2384 (2003), Draper, N., et al.: J. Endocrinol., 186, 251 (2005), Kotlowska, A., et al.: Clin. Biochem., 42, 448 (2009),<br></p>

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

<p>Applications A metabolite of Desoxymetasone (D296970).<br>References Schriks, M., et al.: Environ. Sci. Technol., 44, 4766 (2010), Baeck, M., et al.: Eur. J. Dermatol., 20, 102 (2010), Lee, P., et al.: Bioorg. Med. Chem. Lett., 20, 69 (2010),<br></p>

<p>Stability Light Sensitive<br>Applications A metabolite of Letrozole.<br>References Koyama, E., et al.: Ther. Drug Monit., 15, 224 (1993), Pfister, C., et al.: J. Pharm. Sci., 83, 520 (1994), Vander H.Y., et al.: J. Pharm. Biomed. Anal., 24, 723 (2001), Cohen, M., et al.: Clin. Cancer Res., 8, 665 (2002),<br></p>

<p>Applications S 23 is a selective androgen receptor modulator.<br>References Thevis, M., et al.: Drug Testing and Analysis, 2, 589 (2010); Jones, A., et al.; Endocr., 150, 385 (2009)<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 A metabolite of Triamcinolone acetonide.<br>References Edsbacker, S., et al.: Drug Metab. Dispos., 11, 590 (1983), Szefler, S., et al.: Eur. J. Clin. Pharmacol., 30, 323 (1986), Hansel, T., et al.: J. Immunol. Methods, 145, 105 (1991), Argenti, D., et al.: J. Clin. Pharmacol., 39, 695 (1999),<br></p>

<p>β-Sitosterol β-D-glucoside is a phytosterol glycoside, which is primarily derived from plant sources such as fruits, vegetables, nuts, and seeds. As a natural component of plant cell membranes, it exhibits bioactive properties. The compound functions by modulating cholesterol metabolism and has anti-inflammatory, immunomodulatory, and antioxidant effects. It achieves this by interfering with the absorption of cholesterol in the intestines and modulating the activity of enzymes involved in its metabolism.</p>

<p>Reduced form of lanosterone</p>

<p>Mestranol is a synthetic estrogen, which is derived from chemical synthesis. Its mode of action involves being a prodrug of ethinylestradiol, meaning it is metabolized in the liver to its active form, which then binds to estrogen receptors in target tissues. This binding alters the expression of genes, influencing the reproductive system to prevent ovulation. By inhibiting the release of gonadotropins (LH and FSH) from the pituitary, it effectively halts the maturation of ovarian follicles.</p>

<p>Formononetin-7-O-gentiobioside is an isoflavonoid glycoside, which is a type of naturally occurring compound often found in plants, specifically in the Fabaceae family. This compound is primarily sourced from various legumes and has been studied for its potential bioactive properties due to its unique chemical structure. The mode of action of formononetin-7-O-gentiobioside involves its interaction with biological pathways, where it may exhibit antioxidant, anti-inflammatory, or estrogen-like activities, similar to other isoflavonoids. These interactions are significant in modulating cellular pathways that can contribute to various physiological effects.</p>

Saponin from the quillaja plant is a natural extract characterized by a significant sapogenin content of 25%-30%. This product is derived from the bark of the Quillaja saponaria tree, a native species of Chile. The primary mode of action of these saponins involves the interaction with cell membranes due to their surfactant properties, which can lead to membrane permeabilization and subsequent cellular responses.

<p>Estriol is a steroidal estrogen, which is a naturally occurring hormone primarily sourced from the placenta during pregnancy. Its mode of action involves binding to estrogen receptors, thereby exerting its effects as part of the broader group of estrogens. Estriol has a relatively lower affinity for estrogen receptors compared to estradiol, contributing to its unique pharmacological profile.In scientific research and clinical settings, Estriol is employed in hormone replacement therapy, especially in postmenopausal women, due to its milder estrogenic effects and lower associated risks compared to other estrogens. It is also studied for its potential benefits in urogynecological health, such as the treatment of menopausal symptoms like vaginal atrophy. Furthermore, its application is under investigation for autoimmune conditions such as multiple sclerosis, given its immunomodulatory properties. Ongoing research aims to delineate the therapeutic potential and safety profile of Estriol in various clinical contexts.</p>