Steroids and Derivatives

Fluticasone furoate EP impurity E is an analytical reference standard for pharmacopoeia and research. It is a synthetic fluticasone furoate EP impurity that has been custom synthesized for use as a high-purity, HPLC-grade standard. Fluticasone furoate EP impurity E is characterized by its natural origin and purity, making it appropriate for use in drug development and research. The CAS number for this product is 398454-97-2.

Carbenoxolone disodium treats stomach ulcers; derived from licorice, often has antidiuretic effects, low toxicity.

Atorvastatin impurity F is an impurity that can be found in atorvastatin. It is a white to off-white crystalline solid with a melting point of 142°C. It has a molecular weight of 273.5 and chemical formula of C14H13N3O2. This impurity can be found in atorvastatin as an API impurity, which may have an effect on the efficacy or toxicity of the drug product. Impurities are present in all pharmaceutical products and should be identified, characterized, and quantified for quality control purposes. Impurities are often unavoidable byproducts of the manufacturing process and can lead to potential safety concerns if they are not detected early on during drug development. The presence of impurities may also affect the pharmacological effects or therapeutic efficacy of the drug product.

Chlormadinone acetate (Gestafortin) is an orally active synthetic progestational hormone used often in combinations as an oral contraceptive.

Compounds containing an unfused imidazole ring, whether or not hydrogenated, in the structure, nesoi

Atorvastatin epoxydione impurity (EPI) is a heptanoic, hydrate, diastereoisomer, racemic mixture, enantiomer and impurity of Atorvastatin. The EPI has been minimized in the formulation process by using a novel synthesis route that employs a chiral pyrrole derivative as an intermediate. This minimization has allowed for the elimination of the tautomer and other impurities present in the original compound.

Impurity Estriol EP Impurity C Applications Estriol Methyl Ether (Estriol EP Impurity C) is a metabolite (1,2) of Estriol (E888960), which is a produced naturally and also a metabolite of Estradiol (E888000). Estriol is a GPR3 antagonist in estrogen receptor-negative breast cancer cells displaying anti-proliferative effects (3). References 1. Marrian, G. et al.: Biochem. J. 1929;23(5):1090-8.2. Rogerson, B. et al.: Arch. Biochem. Biophys. 1986 Oct;250(1):70-85.3. Lappano, R. et al.: Mol Cell Endocrinol. 2010 May 14;320(1-2):162-70.

Pinostrobin protects PC12 cells from Aβ25-35 neurotoxicity by reducing oxidative stress, calcium excess, and blocking cell death pathways.

Halogenated derivatives of adrenal cortical hormones

Calcipotriol EP Impurity B is a drug product that is an impurity in Calcipotriol EP. It is produced during the synthesis of calcipotriol and may be present in the natural product. It has been shown to have anti-inflammatory properties, and can be used as a research tool to study calcipotriol metabolism.