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Metyrapone Item No. 14994
CAS Registry No.: 54-36-4 Formal Name: 2-methyl-1,2-di-3-pyridinyl-1- propanone Synonyms: NSC 25265, SU 4885 N
MF: C14H14N2O FW: 226.3 O Purity: ≥98% Stability: ≥2 years at -20°C N Supplied as: A crystalline solid λ UV/Vis.: max: 231, 264 nm
Laboratory Procedures For long term storage, we suggest that metyrapone be stored as supplied at -20°C. It should be stable for at least two years. Metyrapone is supplied as a crystalline solid. A stock solution may be made by dissolving the metyrapone in the solvent of choice. Metyrapone is soluble in organic solvents such as ethanol, DMSO, and dimethyl formamide, which should be purged with an inert gas. The solubility of metyrapone in these solvents is approximately 30 mg/ml. Further dilutions of the stock solution into aqueous buffers or isotonic saline should be made prior to performing biological experiments. Ensure that the residual amount of organic solvent is insignificant, since organic solvents may have physiological effects at low concentrations. Organic solvent-free aqueous solutions of metyrapone can be prepared by directly dissolving the crystalline solid in aqueous buffers. The solubility of metyrapone in PBS, pH 7.2, is approximately 5 mg/ml. We do not recommend storing the aqueous solution for more than one day. β 1 Metyrapone blocks cortisol synthesis by inhibiting steroid 11 -hydroxylase in adrenal cortex (IC50 = 7.8 μM). Metyrapone binds with high affinity to cytochrome P(CYP)450 in hepatic microsomes and induces rat hepatic CYP1A1 and CYP3A gene expression.2,3 It is used to assess adrenal insufficiency, to address hypercortisolism characteristic of Cushing’s syndrome, and may be of clinical value in the treatment of depression and in reducing brain damage resulting from hypoxia-ischemia.4-6
References 1. Hays, S.J., Tobes, M.C., Gildersleeve, D.L., et al. Structure-activity relationship study of the inhibition of adrenal cortical 11b-hydroxylase by new metyrapone analogues. J. Med. Chem. 27(1), 15-19 (1984). 2. Harvey, J.L., Paine, A.J., and Wright, M.C. Disruption of endogenous regulator homeostasis underlies the mechanism of rat CYP1A1 mRNA induction by metyrapone. Biochem. J. 331(1), 273-281 (1998). 3. Paine, A.J., Villa, P., and Hockin, L.J. Evidence that ligand formation is a mechanism underlying the maintenance of cytochrome P-450 in rat liver cell culture. Biochem. J. 188(3), 937-939 (1980). 4. Kamenickż, P., Droumaquet, C., Salenave, S., et al. Mitotane, metyrapone, and ketoconazole combination therapy as an alternative to rescue adrenalectomy for severe ACTH-dependent Cushing’s syndrome. J. Clin. Endocrinol. Metab. 96(9), 2796-2804 (2011). 5. Sigalas, P.D., Garg, H., Watson, S., et al. Metyrapone in treatment-resistant depression. Ther. Adv. Psychopharmacol. 2(4), 139-149 (2012). 6. Hellmich, H.L., Rojo, D.R., Micci, M.A., et al. Pathway analysis reveals common pro-survival mechanisms of metyrapone and carbenoxolone after traumatic brain injury. PLoS One 8(1), e53230 (2013). Cayman Chemical Related Products Mailing address For a list of related products please visit: www.caymanchem.com/catalog/14994 1180 E. Ellsworth Road Ann Arbor, MI 48108 USA
WARNING: This product is for laboratory research only: not for administration to humans. Not for human or veterinary Phone diagnostic or therapeutic use. (800) 364-9897 (734) 971-3335 SAFETY DATA This material should be considered hazardous until information to the contrary becomes available. Do not ingest, swallow, or inhale. Do not get in eyes, on skin, or on clothing. Wash thoroughly after handling. This information contains some, but not all, of the information required for the safe and proper use of this material. Before use, the user must review the complete Safety Data Sheet, Fax which has been sent via email to your institution. (734) 971-3640 WARRANTY AND LIMITATION OF REMEDY Cayman Chemical Company makes no warranty or guarantee of any kind, whether written or oral, expressed or implied, including without limitation, any warranty of fitness for a particular purpose, suitability and merchantability, which extends beyond the description of the chemicals hereof. Cayman warrants only to the original customer that the material will meet our specifications E-Mail at the time of delivery. [email protected] Cayman will carry out its delivery obligations with due care and skill. Thus, in no event will Cayman have any obligation or liability, whether in tort (including negligence) or in contract, for any direct, indirect, incidental or consequential damages, even if Cayman is informed about their possible existence. This limitation of liability does not apply in the case of intentional acts or negligence of Cayman, its directors or its employees. Web Buyer’s exclusive remedy and Cayman’s sole liability hereunder shall be limited to a refund of the purchase price, or at Cayman’s option, the replacement, at no cost to Buyer, of all material that does not meet our specifications. www.caymanchem.com Said refund or replacement is conditioned on Buyer giving written notice to Cayman within thirty (30) days after arrival of the material at its destination. Failure of Buyer to give said notice within thirty (30) days shall constitute a waiver by Buyer of all claims hereunder with respect to said material. For further details, please refer to our Warranty and Limitation of Remedy located on our website and in our catalog. Copyright Cayman Chemical Company, 10/18/2013