Beta Blockers

Stability Hygroscopic
Applications An intermediate in the production of Rosuvastatin (R700500) derivatives.

Stability Light Sensitive
Applications Ciprofibrate Ethyl Ester is an impurity of ciprofibrate(C482475) is a hypolipemic agent, related structurally to Clofibrate (C586910). Ciprofibrate is used as an antilipemic.
References Davison, C., et al.: Drug. Metab. Dispos., 3, 520 (1975), Arnold, A., et al.: J. Pharm. Sci., et al.: 68, 1557 (1979), Tuchman-Duplessis, H., et al.: Toxicology, 12, 1 (1979),

Impurity Nicardipine USP Related Compound B
Applications A pyridine metabolite M-5 of Nicardipine. Nicardipine USP Related Compound B.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Triggle, A., et al.: J. Med. Chem., 23, 1442 (1980), Freedman, D., et al.: Drugs, 34, 578 (1987), Guengerich, F., et al.: Xenobiotica, 25, 689 (1995), Schleifer, K., et al.: Pharmazie, 54, 804 (1999),

Impurity Bisoprolol EP Impurity L (Metoprolol EP Impurity C)
Stability Hygrscopic
Applications 4-[2-Hydroxy-3-[(1-methylethyl)amino]propoxy]benzaldehyde (Bisoprolol EP Impurity L (Metoprolol EP Impurity C)) is a Metoprolol impurity .
References Baldwin, J.J. , et al.: J. Med. Chem., 29, 1065 (1986), Ravelet, C., et al.: J. Sep. Sci., 29, 1322 (2006),

Applications 3-(9H-Carbazol-4-yloxy)-1,2-propanediol is used in the synthesis of carvedilol, a β-adrenergic blocking agent.
References Naidu, K. et al.: Org. Chem. An Indian J., 6, 171 (2010);

Impurity Carvedilol EP Impurity C; Carvedilol Impurity C; Carvedilol USP C
Applications N-Benzyl Carvedilol (Carvedilol EP Impurity C) is an impurity of Carvedilol (C184625) and a degradation product in Carvedilol tablets.
References Karle, C., et al.: Cardiovasc. Res., 49, 361 (2001), Chen, J., et al.: Acta Cardiol. Sin., 19, 93 (2003), Xiang, T., et al.: Pharm. Res., 22, 1205 (2005),

Stability Hygroscopic
Applications An active carboxylate of Mevastatin (M340500). It is a competitive inhibitor of 3-hydroxy-3-methylglutaryl coenzyme A reductase with hypocholesterolemic activity. It has been shown to be effective in reducing cholesterol synthesis in vivo, and thereby in lowering cholesterol levels in blood.
References Endo, A. et al.: Atheroscler. Supp., 5, 39 (2004); Hosobuchi, M. et al.: J. Ferm. Bioeng., 76, 470 (1993);

Impurity Nadolol EP Impurity B
Stability Hygroscopic
Applications (2R,3S)-rel-Nadolol-de(N-tert-butyl)methoxy is an impurity of Nadolol (N201050), a β-Adrenergic blocker. Antihypertensive; antianginal.
References Dreyfuss, J., et al.: J. Clin. Pharmacol., 17, 300 (1977); Sibley, P.L., et al.: Toxicol. Appl. Pharmacol., 44, 379 (1978); Slusarek, L., et al.: Anal. Profiles Drug Subs., 9, 455 (1980)

Impurity Ezetimibe Ketone (USP)
Applications Phase-I metabolite of Ezetimibe (E975000).
References Shah, V., et al: J. Pharm. Sci., 17, 1551 (2000), Van Heek, M., et al.: Br. J. Pharmacol., 134, 409 (2001), Watts, G., et al.: Clin. Sci.,103, 595 (2002), Ghosal, A., et al.: Drug Metab. Dispos., 32, 314 (2004), Sistla, R., et al.: J. Pharm. Biomed. Anal., 39, 517 (2005),

Applications Nicergoline-d3 is the labeled analogue of Nicergoline(N394550), a drug used for age-dependent cognitive impairment such as Alzheimers disease and other types of dementia.
References Caraci, F., et. al.: Brain Res., 1047, 30 (2005); Mizuno, T., et. al.: Brain Res., 1066, 78 (2005)

Applications A labelled antihypertensive. An angiotensin converting enzyme (ACE) inhibitor, converted to active, diacid metabolite.
References Teetz, V., et al.: Arzneim.-Forsch., 34, 1399 (1984), Ruggenenti, P., et al.: Lancet, 352, (1998), Bosch, J., et al.: Br. Med. J., 324, 1 (2002),

Applications Isometheptene Maleate belongs to a group of sympathomimetic amine and shows very little antihypertensive activity. Isometheptene Maleate is used as an antispasmodic drug.
References Vidrio, H. et al.: J. Pharmacol. Exp. Therap., 187, 308 (1973); Taylor, W.G. et al.: Drug Metab. Disp., 5, 564 (1977);

Applications 2-Oxo-Zoniporide is an metabolite of Zoniporide, a potent and selective inhibitor of human sodium-hydrogen exchanger isoform1(NHE-1) and protects against cardiac ischemia-reperfusion injury.
References Ross, T.W., et al.: Cardiovascular. Drug. Reviews., 21, 17 (2003); Deepak, D., et al.: Drug. Metabol. Dispos., 38, 641 (2010);

Applications AICAR is a nucleoside analogue that is able to enter nucleoside pools and is able to significantly increase levels of adenosine during periods of ATP breakdown. Adenosine-regulating agents (ARAs) have been recognized for therapeutic potential in myocardial ischemia. Cardioprotective.
References Mullane, K., et al.: Trends Cardiovasc Med., 3, 227 (1993), Browne, G.J., et al.: J. Biol. Chem., 279, 13, 12220 (2004)

Stability Moisture Sensitive
Applications Oxyfedrine acts as a vasodilator affecting the coronary base flow.
References Baraka, Y. et al.: J. Drug Res., 12, 161 (1980);

Applications An Epinephrine (E588585) derivative formed in injection solutions and eye drops during sterilization and storage of L-Epinephrine Bitartrate.
References De Mol, N.J. et al.: Pharmac. Week., 117, 1 (1982); Liu, C. et al.: Yao. Fen. Zaz., 2, 200 (1982);