Steroids and Derivatives

<p>Calcipotriol monohydrate, a Vitamin D3 analog, binds well to the vitamin D receptor, used in psoriasis research.</p>

<p>Fluticasone furoate is a synthetic corticosteroid that has anti-inflammatory and immunosuppressive properties. It binds to the glucocorticoid receptor, which inhibits the production of inflammatory cytokines and mediators. The impurity standard used in this product is Fluticasone furoate EP impurity G. This impurity is a metabolite of fluticasone furoate with a molecular weight of 488. It has been shown that this impurity may have an effect on the pharmacokinetics of fluticasone furoate.</p>

<p>Fluorometholone delta 9,11 is a drug product that is used as an analytical reference standard for the quantitative determination of impurities in drugs. It is a natural metabolite and impurity in synthetic drugs such as fluoroquinolones and corticosteroids. Fluorometholone delta 9,11 has been shown to be a substrate for CYP3A4 and P-glycoprotein. This drug has also been shown to have anti-inflammatory effects and may decrease the risk of infection by suppressing neutrophil function.</p>

<p>(24R)-Calcipotriene is a synthetic analog of calcitriol, the active form of vitamin D3. It is a proapoptotic agent that inhibits tumor growth by causing mitochondrial membrane potential collapse in cancer cells. (24R)-Calcipotriene has been shown to inhibit tumor growth in animals and human cells in vitro. This drug also potentiates the effects of other anticancer drugs such as doxorubicin and etoposide. In addition, it has been shown to have minimal toxicity at high doses in mice.</p>

<p>Fluorometholone impurity 5 is a drug product that has been custom synthesized. It has not yet been assigned to a CAS number. This compound exhibits high purity and is an analytical grade. Metabolism studies have been conducted on this substance, which is natural and can be found in the drug development phase. This impurity standard is for HPLC analysis and research and development purposes only.</p>

<p>(3R,5S,6E)-7-[1-ethyl-3-(4-fluorophenyl)-1H-indol-2-yl]-3,5-dihydroxy-6-heptenoic acid sodium salt is an impurity standard for the drug product. It is a synthetic metabolite that binds to proteins and has been found in human urine. The chemical synthesis of (3R,5S,6E)-7-[1-ethyl-3-(4-fluorophenyl)-1H-indol-2-yl]-3,5-dihydroxy-6 heptenoic acid sodium salt was performed using a high purity custom synthesis and high purity pharmacopoeia grade reagents.</p>

<p>Atorvastatin N-(3,5-dihydroxy-7-heptanoic acid)amide calcium salt is a synthetic drug product that belongs to the class of statins. It has been used in research and development as a standard for HPLC analysis. The metabolite atorvastatin 3,5-dihydroxy-7-heptanoic acid (CAS No. 1105067-87-5) is also available from Sigma Aldrich. The impurity standards atorvastatin calcium salt and amorphous calcium sulfate are also available from Sigma Aldrich. Atorvastatin N-(3,5-dihydroxy-7-heptanoic acid)amide calcium salt is an API impurity in the synthesis of atorvastatin sodium (CAS No. 120781-93-1).</p>

<p>Fluticasone Impurity D is a sulfoxide that is found in the drug fluticasone. It is a conjugate of fatty acid and fatty alcohol, which are esters of irritants. Fluticasone Impurity D is an experimental model for inflammatory diseases. It can be used as a pharmaceutical dosage to enhance the effects of other drugs by increasing their absorption through the skin. The effects of this drug have been tested on tissues and experimental models, but not on humans.</p>

<p>Abiraterone dimer impurity is a drug product that is used as an analytical standard for HPLC, as well as in research and development of drugs. It is also a metabolite of abiraterone and has been detected in the urine of patients receiving the drug. Abiraterone dimer impurity is found in trace amounts in abiraterone acetate but its pharmacological significance is not known. This impurity has been detected in the urine of patients receiving abiraterone acetate therapy.</p>

<p>(3S,5R)-Atorvastatin calcium is an analytical standard for the drug atorvastatin. It has a purity of 99.9% and is manufactured in accordance with the requirements of the pharmacopoeia. The product is available as a white crystalline powder and is soluble in water, acetone, and ethanol. (3S,5R)-Atorvastatin calcium has been used in drug development and as an impurity standard for HPLC analysis. It also serves as a metabolite to characterize the production process of atorvastatin.</p>

<p>Please enquire for more information about Dutasteride EP impurity E including the price, delivery time and more detailed product information at the technical inquiry form on this page</p>

<p>Dexamethasone EP Impurity K is an analytical standard for impurities in the drug product Dexamethasone EP. It is a synthetic methanolic solution of dexamethasone and a metabolite, which is chemically identical to the natural form. The purity of this impurity standard is 99.9%. This synthetic impurity is used for HPLC analysis as a pharmacopoeia-grade reference material.</p>

<p>Atorvastatin is a potent inhibitor of the enzyme HMG-CoA reductase, which is responsible for the conversion of HMG-CoA to mevalonate. This inhibition reduces the production of cholesterol and other lipids in the liver. Metabolism studies have shown that atorvastatin undergoes extensive presystemic metabolism by cytochrome P450 enzymes, primarily CYP3A4 and CYP2C9. The drug is converted to inactive metabolites that are eliminated primarily through renal excretion. Atorvastatin has not been found to inhibit any of the following: cytochrome P450 1A1/2, 2C8/9, 2D6, 2E1, 3A4/5 or glucuronidases.</p>

<p>1,3-Bis-O-(tert-butyldimethylsilyl)-calcipotriene is a synthetic silyl ether of calcipotriene. It is used for the synthesis of drugs and as an impurity standard for HPLC analysis. 1,3-Bis-O-(tert-butyldimethylsilyl)-calcipotriene has been studied in metabolism studies and found to be natural, but it is not an API because it does not have a biological activity. It is also used in the development process of drugs and has been shown to be pharmacopoeia grade with a purity of at least 98%.</p>

<p>Rac5-Keto Fluvastatin is a synthetic, natural and custom synthesis drug product. It's CAS number is 1160169-39-0. Rac5-Keto Fluvastatin is a metabolite of fluvastatin. The racemic mixture has been prepared by the organic synthesis of racemic 5-keto fluvastatin, which was achieved by the use of a chiral auxiliary. Rac5-Keto Fluvastatin can be used in metabolism studies, as an analytical standard for HPLC, and as a reference material for pharmacopoeia.</p>

<p>(5E)-Calcipotriene is a synthetic, natural, and analytical chemical. It is a white to off-white powder with a melting point of about 122 °C. (5E)-Calcipotriene has been used as an analytical standard for HPLC and as an impurity in the synthesis of calcitriol. The International Union of Pure and Applied Chemistry (IUPAC) name for this compound is 5Z,7Z,11Z,15Z-eicosapentaenoic acid. It can also be found in the form of 5Z,8Z,11Z,14E-eicosapentaenoic acid.</p>

<p>(betaR,deltaR)-2,3-Bis(4-fluorophenyl)-beta,delta-dihydroxy-5-(1-methylethyl)-4-[(phenylamino)carbonyl]-1H-pyrrole-1-heptanoic acid hemicalcium salt is an impurity that is used in the production of a drug product. This product is metabolized to (betaR,deltaR)-2,3-bis(4-fluorophenyl)-beta,delta-dihydroxy-5-(1-methylethyl)-4-[(phenylamino)carbonyl]-1H-pyrrole 1 heptanoic acid which is used as an analytical standard for HPLC.</p>

<p>5,6-Dehydro-17beta-dutasteride is a synthetic drug product that is used as an analytical standard for the determination of metabolites and impurities in pharmaceuticals. It also has been used as a natural metabolite, which can be found in human urine. 5,6-Dehydro-17beta-dutasteride is a metabolite of dutasteride, which is an antiandrogen medication for the treatment of benign prostatic hyperplasia (BPH). It is also known to inhibit the metabolism of other drugs such as ketoconazole and metoprolol.</p>

<p>Cyproterone, an anti-androgen, treats female hirsutism and acne, and is used palliatively in prostate cancer.</p>

<p>Hexestrol diphosphate tetrasodium: synthetic ER agonist, may cause cancer, inhibits microtubule assembly, leads to mitotic arrest and DNA adducts.</p>

<p>Zilpaterol is an acting ß-agonist that causes fat loss and muscle gain in cattle.</p>

<p>Asoprisnil is a selective modulator of progesterone receptor.</p>

<p>AY 9944 inhibits DHCR7 enzyme (IC50=13 nM) and sterol isomerase, leading to hypocholesterolemia and 7DHC buildup.</p>

<p>Fludrocortisone （Florinef） is a synthetic corticosteroid with moderate glucocorticoid potency and greater mineralocorticoid potency.Cost-effective and quality-assured.</p>

<p>Algestone is a synthetic progestational dihydroxy derivative with anti-inflammatory properties.</p>

<p>Diethylstilbestrol dipropionate can be used in estrogen therapy of relapsed prostate cancer.</p>

<p>Isoflupredone, a synthetic corticosteroid, inhibits inflammation and immune response in animals.</p>

<p>Promegestone is a progestin medication used in menopausal hormone therapy and in the treatment of gynecological disorders.</p>

<p>7-Ketolithocholic acid absorbs and reduces endogenous bile acid and cholesterol secretion.</p>

<p>Maxacalcitol (22-Oxacalcitriol) is a ligand of VDR-like receptors and a non-serum calcium vitamin D3 analogue.</p>

<p>PF-02413873 is a competitive antagonist of nonsteroidal progesterone receptor with a Ki of 2.6 nM.</p>

<p>Epristeride (ONO-9302) is a steroidal 5-alpha-reductase isoform 2 inhibitor that inhibits SR isoform 2. Epristeride reduces prostate size.</p>

Cyclanic, cyclenic or cycloterpenic ketones without other oxygen function not elsewhere specified or included

<p>Atorvastatin tert-butyl ester is an acid that is used to treat high cholesterol. It is a synthetic statin that inhibits the enzyme HMG-CoA reductase and blocks the production of cholesterol in the liver. This drug is administered orally, as a tablet or capsule, or in liquid form as a suspension. The drug has a bitter taste and evaporation may occur if it comes into contact with skin or clothes. Atorvastatin tert-butyl ester may be found in polymorphic forms (including dihydropyridine, dihydrospirocyclopentane, and dihydrobenzoquinoline). These forms are inactive, but can be activated by exposure to light or heat. These reactions produce an acidic compound that can react with other compounds to form new compounds.</p>

<p>Atorvastatin lactam phenanthrene calcium salt impurity is a high purity, custom synthesis drug product. It is a metabolite of atorvastatin and was identified using metabolism studies in rat and human liver microsomes. This impurity has been shown to be an analytical standard for HPLC. Atorvastatin lactam phenanthrene calcium salt impurity is used in niche research and development, as well as the development of drugs that are pharmacopoeia grade.</p>

<p>Atorvastatin is a drug product with an impurity of atorvastatin cyclic sodium salt (isopropyl). The synthesis of this compound can be found in the natural and synthetic routes. Impurity standard is used to identify impurities in drugs and is necessary for pharmacopoeia, research and development, and analytical work. This compound has been shown to have high purity, analytical, metabolism studies, natural, drug development, and pharmacopoeia. CAS No. 1316291-19-6 is the impurity standard for this compound.</p>

<p>Darglitazone (CP-86325) is a potent, selective agonist of PPAR-γ with antidiabetic actions.</p>

<p>Halobetasol (Ulobetasol), a corticosteroid, is utilized in the research of severe localized psoriasis [1].</p>

<p>Cerivastatin is an HMG-CoA reductase inhibitor with anticancer and lipid-lowering effects and can be used to study primary hyperlipidemia.</p>

<p>Trimegestone, a highly effective oral progestogen, is used for endometrial protection, all doses inducing secretory endometrial transformation.</p>

<p>Fulvestrant R enantiomer is the less active R enantiomer of Fulvestrant. Fulvestrant is a potent estrogen receptor antagonist with an IC50 of 9.4 nM.</p>

<p>DXP, a lipophilic prodrug of Dexamethasone, has 47x less glucocorticoid receptor affinity; it's an agonist &amp; anti-inflammatory.</p>

<p>Fulvestrant S enantiomer is the less active S enantiomer of Fulvestrant. Fulvestrant is a potent estrogen receptor antagonist with an IC50 of 9.4 nM.</p>

<p>Desogestrel Related Compound A is a synthetic impurity standard. It is the metabolite of desogestrel, which belongs to the drug class progestins and is used for contraception. Desogestrel Related Compound A is used as a research and development or impurity standard for pharmacopoeia-grade drugs or custom synthesis with high purity. The CAS number for this product is 201360-82-9.</p>

<p>Atorvastatin is a drug that belongs to the class of statins. It is used for the treatment of high cholesterol levels and other related diseases, such as cardiovascular disease. Atorvastatin calcium trihydrate EP Impurity G is an impurity that may be present in atorvastatin calcium trihydrate. This compound has not been found to have any pharmacological activity.</p>

<p>7-(4-Fluorophenyl)hexahydro-b,7-dihydroxy-1b-(1-methylethyl)-7a-phenyl-1a-[(phenylamino)carbonyl]-3H-oxireno[3,4]pyrrolo[2,1-b][1,3] oxazine-3-butanoic acid is a synthetic drug product with a purity of &gt;98%. It is an impurity standard for HPLC methods. This compound has been studied extensively in metabolism studies and pharmacological assays. 7-(4-Fluorophenyl)hexahydro-b,7-dihydroxy-1b-(1-methylethyl)-7a -phenyl 1a-[(phenylamino)carbonyl]-3H -oxireno[3,4]pyrrolo[2,1 -</p>

Cyclanic, cyclenic or cycloterpenic ketones without other oxygen function, nesoi

<p>Ketones and quinones, w/not with other oxygen function,and their halogenated,sulfated,nitrated,or nitrosated derivatives, nesoi</p>