Bloqueadores Beta

Applications N-Formyl Cardevilol is an impurity of Carvedilol (C184625).
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package

Applications Befunolol is a β-adrenergic blocker with an intrinsic sympathomimetic action. But it can work as a β-adrenergic partial agonist in isolated organs.
References Nakano, J., et al.: Chem. Pharm. Bull., 36, 1399 (1988); Takayanagi, I., et al.: Gen. Pharmacol., 20, 417 (1989); Koike, K., et al.: Gen. Pharmacol., 25, 1477 (1994)

Impurity Metoprolol EP Impurity O
Applications 1,1’-[(1-Methylethyl)imino]bis[3-[4-(2-methoxyethyl)phenoxy]-2-propanol (Metoprolol EP Impurity O) is an impurity of Metoprolol.
References Gyllenhaal, O., et al.: J. Biochem. Biophys. Methods, 43, 135 (2000), Chester, T., et al.: Anal. Chem., 74, 2801 (2002),

Impurity Carvedilol EP Impurity D; Carvedilol USP-D
Applications 4-(2,3-Epoxypropoxy)carbazole (Carvedilol EP Impurity D; Carvedilol USP-D) is an intermediate in the synthesis of Carvedilol (C184625).

Stability Hygroscopic
Applications A metabolite of Nebivolol.
References Stoleru, L., et al.: J. Cardiovasc. Pharmacol., 22, 183 (1993), Cockcroft, J., et al.: J. Pharmacol. Exp. Ther., 274, 1067 (1995), Stoschitzky, K., et al.: Cardiovasc. Drugs Ther., 16, 133 (2002), Poole-Wilson, P., et al.: Lancet, 362, 7 (2003),

Applications Asperosaponin VI is a steroidal extract with anti-inflammatory and antinociceptive activity. long term use has been seen to attenuate cardiac dysfunction.
References Choi, J. et al.: J. Med. Food, 8, 78 (2005); Li, C. et al.: Food. Chem. Toxicol., 8, 1432 (2012);

Applications Bopindolol is an ester prodrug of Pindolol (P468000). Bopindolol is a long acting β-adrenoceptor blocking agent. Bopindolol displays antispasmogenic activity mediated by α1-adrenoceptors and 5-HT2 receptors.
References Turner, D.R. et al.: Br. J. Clin. Pharmacol., 17, 295 (1984); Brodde, O.E. et al.: J. Cardio. Pharmacol., 8, S70 91986); Doggrell, S.A.: Med, Sci. Res., 17, 681 (1989);

Impurity Rosuvastatin EP Impurity F
Applications (4R,6S)-6-[(1E)-2-[4-(4-Fluorophenyl)-6-(1-methylethyl)-2-[methyl(methylsulfonyl)amino]-5-pyrimidinyl]ethenyl]-2,2-dimethyl-1,3-dioxane-4-acetic Acid 1,1-Dimethylethyl Ester (Rosuvastatin EP Impurity F) is a Rosuvastatin (R700500) intermediate as HMG-CoA reductase inhibitor.
References Beck, et al.: J. Med. Chem., 33, 52 (1999),

Impurity Carvedilol Impurity A; Carvedilol USP A
Applications An impurity from the process of Carvedilol (C184625). Carvedilol impurity A. Carvedilol USP A.

Stability Hygroscopic, Light Sensitive, Temperature Sensitive
Applications Fluvastatin 3-Hydroxy-4,6-diene Sodium Salt is a metabolite of Fluvastatin (F601250), a synthetic HMG-CoA reductase inhibitor. Antilipemic.
References Yuan, J., et al.: Atherosclerosis, 87, 147 (1991), Tse, F.L.S., et al.: J. Clin. Pharmacol., 32, 630 (1992), Dain, J.G., et al.: Drug Metab. Disposit., 21, 567 (1993),

Impurity Timolol EP Impurity A; Timolol BP Impurity A; Timolol USP Related Compound A
Applications (R)-Timolol (Timolol EP Impurity A; Timolol BP Impurity A; Timolol USP Related Compound A) is an antihypertensive agent that increases ocular blood flow and reduces intraocular pressure. (R)-Timolol is an β-adrenergic blocking agent that binds only to nonspecific sites in the particulate fraction of the heart, lungs, and brain.
References Rotmensch, H. et al.: J. Clinical. Pharmacol., 33, 544 (1993); Chiou, G. & Chen. Y., J. Ocular. Pharmacol., 8, 183 (1992); Chiou, G. et al.: J. Ocular. Pharmacol., 6, 23 (1990); Tocco, D. et al.: Drug Met. Disposit., 4, 323 (1976)

Applications A metabolite of Atorvastatin, a selective, competitive HMG-CoA reductase inhibitor. Atorvastatin is the only drug in its class specfically indicated for lowering both elevated LDL-cholesterol and triglycerides in patients with hypercholesterolemia.
References Smith, S., et al.: Am. J. Cardiol., 80, 10H (1997), Jacobsen, W., et al.: Drug Metab. Dispos., 28, 1369 (2000), Istvan, E., et al.: Science, 292, 1160 (2001), Tabernero, L., et al.: J. Biol. Chem., 278, 19933 (2003), Bratton, L., et al.: Bioorg. Med. Chem., 15, 5576 (2007),

Impurity Atenolol Impurity 3; Atenolol Impurity 1
Applications Atenolol Impurity 3. Atenolol Impurity 1.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package

Impurity Carvedilol EP Impurity B; Carvedilol Impurity B; Carvedilol USP B
Applications Carvedilol Bis-carbazole (Carvedilol EP Impurity B; Carvedilol Impurity B; Carvedilol USP B) is an impurity from the process of Carvedilol (C184625).

Applications Tenivastatin Calcium is derived from Simvastatin (S485000), which is a synthetic derivative of a fermentation product of Aspergillus terreus. A competitive inhibitor of HMG-CoA reductase. A synthetic analog of Lovastatin. Antilipemic. Simvastatin, the drug, is sold under the trade name Zocor.
References Hoffman, W.F., et al.: J. Med. Chem., 29, 849 (1986), Mol, M.J., et al.: Lancet, 2, 936 (1986)

Impurity Carvedilol EP Impurity E; Carvedilol Impurity E; Carvedilol USP E
Applications 2-(2-Methoxyphenoxy)ethylamine Hydrochloride (Carvedilol EP Impurity E; Carvedilol Impurity E; Carvedilol USP E) is an impurity of Carvedilol synthesis.
References Smith, L., et al.: J. Med. Chem., 20, 1653 (1977),

Applications Cardioselective β-adrenergic blocker. Antihypertensive, antianginal, antiarrhythmic (class II).
References Caplar, V., et al.: Anal. Profiles Drug Subs., 13, 1 (1984),

Applications Labelled Diltiazem (D460620). A calcium channel blocher with vasodilating activity. Antianginal; antihypertensive; antiarrhythmic (class IV).
References Sato, et al.: Arzneim.-Forsch., 21, 1338 (1971), Smirnov, S.R.: Eur. J. Pharmacol., 360, 81 (1998), Hansson, L., et al.: Lancet, 356, 359 (2000),

Applications Labelled (S)-Atenolol (A790080). Cardioselective β-adrenergic blocker. Antihypertensive, antianginal, antiarrhythmic (class II).
References Caplar, V., et al.: Anal. Profiles Drug Subs., 13, 1 (1984),

Applications A β-adrenoceptor antagonist. Antihypertensive.
References Armstrong, D., et al.: Anal. Chem., 66, 1473 (1994), Kato, M., et al.: J. Pharm. Biomed. Anal., 30, 1845 (2003),

Impurity Timolol EP Impurity F; Timolol BP Impurity F; Timolol USP Related Compound F
Applications 3-Chloro-4-morpholino-1,2,5-thiadiazole (Timolol EP Impurity F; Timolol BP Impurity F; Timolol USP Related Compound F) is an intermediate for the synthesis of Timolol.
References Wasson, B., et al.: J. Med. Chem., 15, 651 (1972), Tokunaga, M., et al.: Sci., 277, 936 (1997),

Impurity Atenolol EP Impurity C
Applications 4-(2,3-Epoxypropoxy)phenylacetamide (Atenolol EP Impurity C) is an impurity of Atenolol, a cardioselective β-adrenergic blocker.
References Caplar, V., et al.: Anal. Profiles Drug Subs., 13, 1 (1984)

Applications Antihypertensive; antiarrhythmic (class II); antianginal; antiglaucoma agent.
References Wasson, et al.: J. Med. Chem., 15, 651 (1972), Franciosa, et al.: Clin. Pharmacol. Ther., 13, 138 (1972), Heel, R.C., et al.: Drugs, 17, 38 (1979), Rofman, B.A., et al.: Hypertension, 2, 643 (1980), Mazzo, D.J., et al.: Anal. Profiles Drug Subs., 16, 641 (1987),

Applications A metabolite of Spironolactone.
References Gochman, N., et al.: J. Pharmacol. Exp. Ther., 135, 312 (1962), Tori, K., et al.: Steroids, 4, 713 (1964), Solymoss, B., et al.: Toxicol. Appli. Pharmacol., 18, 586 (1971),

Applications N-Nitrosoatenolol is an N-nitroso derivative of Atenolol (A790075), which is a cardioselective β-adrenergic blocker. Antihypertensive, antianginal, antiarrhythmic (class II). N-Nitrosoatenolol can be used for its genotoxic effect in rat and human hepatocytes.
References Caplar, V., et al.: Anal. Profiles Drug Subs., 13, 1 (1984); Robbiano, L., et.al., Cancer Res., 51, 2273-2279, (1991);

Stability Hygroscopic
Applications (S)-Penbutolol Sulfate is an isomer of Penbutolol (P220500), a β-adrenoceptor antagonist. Antihypertensive.
References Lassen, J.B.: Eur. J. Pharmacol., 47, 351 (1978), Lund, J., et al.: Acta Pharmacol. Toxicol., 51, 351, (1982),

Applications A carvedilol Impurity.

Stability Hygroscopic
Applications Rosuvastatin tert-Butyl Ester, is a metabolite of Rosuvastatin (R700500) a selective, competitive HMG-CoA reductase inhibitor.
References Watanabe, M., et al.: Bioorg. Med. Chem., 5, 437 (1997), Lee, E., et al.: Clin. Pharmacol. Ther., 78, 330 (2005), Ferdinand, K.C., et al.: Am. J. Cardiol., 97, 229 (2006),

Applications Carvedilol (C184625) derivative.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package

Applications Diltiazem (D460620) intermediate (impurity B).
References Chaffman, M., et al.: Drugs, 29, 387 (1985), Kamath, B., et al.: J. Pharm. Biomed. Anal., 11, 407 (1993), Chankvetadze, B., et al.: J. Pharm. Biomed. Anal., 27, 161 (2002),

Applications Carvedilol is a nonselective β-adrenergic blocker with α1-blocking activity. Carvedilol is an antihypertensive used in the treatment of congestive heart failure.
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 Hirohashi, M., et al.: Arzneim.-Forsch., 40, 735 (1990); Packer, M., et al.: N. Engl. J. Med., 334, 1349 (1996);

Applications N-Nitrosometoprolol is an N-nitroso derivative of rac Metoprolol(M338815), which is a β1 selective aryloxypropanolamine andrenergic antagonist. Used in the treatment of a variety of cardiovascular disorder. N-Nitrosometoprolol can be used to assess human and rat hepatocytes.
References McGourty, J.C., et al.: Br. J. Clin. Pharmacol. 20, 555 (1985); Lennard, M.S., et al.: Biochem. Pharmacol., 35, 2757 (1986); Martelli, A., In Vivo, 11, 189-194, (1997);

Applications 4’-Hydroxyphenprocoumon is a metabolite of the oral anticoagulant Phenprocoumon (P318820).
References De Vries, J. et al.: J. Chrom. Biomed. Appl., 529, 479 (1990);

Applications Propoxyphenyl-thiohydroxyhomosildenafil is an analogue of Hydroxythiohomo Sildenafil (H963150).
References Balayssac, S., et. al.: J. Pharmaceut. Biomed., 63, 135 (2012)

Impurity Rosuvastatin EP Impurity C (Calcium Salt)
Stability Hygroscopic
Applications 5-Oxo Rosuvastatin (Rosuvastatin EP Impurity C (Calcium Salt)) is a Rosuvastatin (R700500) impurity.
References Endo, A., et al.: J. Antibiot., 32, 852 (1979), Beck, G., et al.: J. Med. Chem., 33, 52 (1990), Koga, T., et al.: Lipids, 30, 775 (1995),

Impurity Atenolol EP Impurity E
Applications 4,4'-[(2-Hydroxy-1,3-propanediyl)bis(oxy)]bis-benzeneacetamide is an impurity of Atenolol (A790075), a cardioselective β-adrenergic blocker. Atenolol EP Impurity E
References Caplar, V., et al.: Anal. Profiles Drug Subs., 13, 1 (1984);

Applications A dextrorotatory stereoizomer of Quinine. Antiarrhythmic (class IA). Antimalarial.
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 Loutfy, M.A., et al.: Anal. Profiles Drug Subs., 12, 483 (1983), Mason, J. W., et al.: Ann. N. Y. Acad. Sci., 432, 162 (1984),

Applications An optically active metabolite of Carvedilol (C184625), a nonselective ß-adrenergic blocker with α1-blocking activity.
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 Sponer, G., et al.: J. Cardiovasc. Pharmacol., 9, 317 (1987), Fujimaki, M., ET AL.: Xenobiotica, 20, 1025 (1990), Ruffolo, R., et al.: Eur. J. Clin. Pharmacol., 38, S82 (1990), Schaefer, W.H., et al.: Drug Metab. Dispos., 26, 10, 958 (1998),

Applications α-Propyl-α-(1-demethylethyl)-Verapamil is an impurity of Verapamil (V125000, HCl salt) which is a calcium channel blocker.
References Atlas, D, and Adler, M.: Proc. Natl. Acad. Sci. USA, 78, 1237 (1981), Janis, R., et al.: Adv. Drug. Res., 16, 309 (1987)

Impurity Timolol EP Impurity D; Timolol BP Impurity D; Timolol USP Related Compound D
Applications 3-Hydroxy-4-morpholino-1,2,5-thiazole (Timolol EP Impurity D; Timolol BP Impurity D; Timolol USP Related Compound D) is an intermediate for the preparation of Timolol.
References Bodor, N., et al.: J. Med. Chem., 31, 100 (1988),

Impurity Clonidine EP Impurity A
Applications 1-Acetyl-2-imidazolidinone (Clonidine EP Impurity A) is a synthetic reagent used in the preparation of triple [14C]-labelled moxonidine which is an antihypertensive compound.
References Czeskis, B., et al.: J. Labelled Comp. Radiopharm., 47, 699 (2004)

Applications 2-Phenylphenol is an agricultural fungicide and is no longer used as a food additive (1). It has been associated with the incidence of bladder cancer in male rats which may be related to its primary metabolite, phenylhydroquinone (2). Drinking water contaminant candidate list 3 (CCL 3) compound as per United States Environmental Protection Agency (EPA). Environmental contaminants; Food contaminants.
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 1. Gouin T. et al.: Environ Pollut. 2012 Jun;165:208-14. 2. Balakrishnan, S. et al.: Environ Mol Mutagen. 2016 Apr;57(3):210-9

Applications Mixed β-adrenergic blocker and serotonin 5HT1A-receptor antagonist. Antihypertensive; antianginal; antiarrhythmic; antiglaucoma.
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 Dreshfield, L.J., et al.: Neurochem. Res., 21, 557 (1996), Perez, V., et al.: Lancet, 349, 1594 (1997),

Applications Labelled 7α-Hydroxy-4-cholesten-3-one (H825130). 7α-Hydroxy-4-cholesten-3-one is a metabolite of Cholesterol (C432501).
References Connor, W., et al.: J, Clin. Invest., 48, 1363 (1969),

Applications A labelled inhibitor of glucose synthesis.
References Garcia-Salguero, L. et al.: Arch. Int. Physiol., Biochim. Biophys., 99, 237, (1991); Martirosyan, A., et al.: Biochem. Pharmacol., 68, 1729 (2004);

Applications An optically active metabolite of Carvedilol (C184625), a nonselective ß-adrenergic blocker with α1-blocking activity.
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 Sponer, G., et al.: J. Cardiovasc. Pharmacol., 9, 317 (1987), Fujimaki, M., ET AL.: Xenobiotica, 20, 1025 (1990), Ruffolo, R., et al.: Eur. J. Clin. Pharmacol., 38, S82 (1990), Schaefer, W.H., et al.: Drug Metab. Dispos., 26, 10, 958 (1998),

Impurity Fluocinolone Acetonide EP Impurity E
Stability Hygroscopic
Applications (6α,9β,11β,16α)-9,11-Epoxy-6-fluoro-21-hydroxy-16,17-[(1-methylethylidene)bis(oxy)]pregna-1,4-diene-3,20-dione, can be used in the production of fluocinolone acetonide (F455800).
References Grinenko, G.S, Khimiko-Farmatsevticheskii Zhurnal, 12, 110 (1978), Sammul, et al.: J. Assoc. Off. Agric. Chem., 47, 952 (1964), Emerson, M.V., et al.: BioDrugs, 21, 245 (2007),

Applications Diazoxide-d3 is the labeled analogue of Diazoxide (D417305), which reduces status epilepticus neuron damage in diabetes.
References Baba, A., et al.: J. Neurosci., 23, 7737 (2003); Bancila, V., et al.: J. Neurochem., 90, 1243 (2004); Bancila, V., et al.: J. Biol. Chem., 280, 8793 (2005)

Applications A labelled metabolite of Spironolactone.
References Gochman, N., et al.: J. Pharmacol. Exp. Ther., 135, 312 (1962), Tori, K., et al.: Steroids, 4, 713 (1964), Solymoss, B., et al.: Toxicol. Appli. Pharmacol., 18, 586 (1971),

Applications Atorvastatin (A791750) impurity.
References Kearney, A.S., et al.: Pharm. Res., 10, 1461 (1993); Heinonen, T.M., et al.: Clin. Ther., 18, 853 (1996);

Applications 2-[3-(Aminosulfonyl)-4-chlorobenzoyl]-benzonic Acid is a potential metabolite of Chlorthalidone.
References Salado C., et al.: J. Chromatography. Biomed. App., 690, 195 (1997);

Applications 2-(2-Aminoethoxy)anisole is used as an additive to vinylphosphonic acid esters and acrylonitrile forming compounds displaying hypotensive activity. An impurity from the process of Carvedilol (C184625)
References Reznik, V. et al.: Russ. Chem. Bull., 48, 979, (1999); Hirohashi, M., et al.: Arzneim.-Forsch., 40, 735 (1990), Packer, M., et al.: N. Engl. J. Med., 334, 1349 (1996),

Applications Aprindine is a long-acting antiarrhythmic agent, effective when administered orally or intravenously in the treatment of ventricular arrhythmias of varying etiologies.
References Danilo, P. Jr., et al.: Am. Heart. J., 97, 119 (1979); Atarashi, H., et al.: Circulation. J., 66, 553 (2002);

Applications An isomer of the antiarrhythmic, antiglaucoma agent Timolol (T443700).
References Marini, R.D. et al.: Anal. Chim. Acta, 531, 131 (2005);

Applications 5-Oxorosuvastatin methyl ester is an intermediate in the synthesis of Rosuvasatatin (calcium salt: R700500), a 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase inhibitor that decreases high-sensitivity C-reactive protein (hsCRP) and cholesterol concentrations in the blood.
References McTaggart, F., et al.: Am. J. Cardiol., 87, 28 (2001); Ridker, P., et al.: Lancet, 373, 1175 (2009)

Applications (2R,3S)-rel-Nadolol-N-[(2R,3S)-rel-Nadolol-de(N-tert-butyl)]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)

Applications (-)-Nebivolol intermediate.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package

Applications Labelled Dopamine. Endogenous catecholamine with α and β-adrenergic activity. Cardiotonic; antihypotensive.
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 Carter, J.E., et al.: Anal. Profiles Drug Subs., 11, 257 (1982), Dasta, J.F., et al.: Pharmacotherapy, 6, 304 (1986),

Applications A compound present in olive oil. An important fine chemical intermediate with broad prospects for application development.
References Shu, Y., et al.: Guangdong Huagong, 37, 108 (2010), Papadopoulos, G., et al.: J Am Oil Chem Soc, 68, 669 (1991),

Impurity Metoprolol EP Impurity B
Applications 4-(2-Methoxyethyl)phenol (Metoprolol EP Impurity B) is an impurity of Metoprolol.
References McGourty, J., et al.: Br. J. Clin. Pharmacol., 20, 555 (1985), Zhou, H., et al.: Clin. Pharmacol. Ther., 47, 686 (1990), Koyama, E., et al.: J. Pharmacol. Exp. Ther., 271, 860 (1994)

Applications Cardioselective β-adrenergic blocker. Antihypertensive, antianginal, antiarrhythmic (class II).
References Caplar, V., et al.: Anal. Profiles Drug Subs., 13, 1 (1984),

Applications 4-Hydroxy Flecainide is an analogue of Flecainide (F390000).
References Blom, Y., et al.: J. Chromatogr., 653, 138 (1993),

Applications An antiarrhythmic agent isolated from Rauwolfia serpentina.
References Galarreta, B., et al.: Bioorg. Med. Chem., 16, 6689 (2008), Sun, L., et al.: Plant Mol. Biol., 67, 455 (2008), Ruiz-May, E., et al.: Mol. Biotechnol., 41, 278 (2009),

Impurity Timolol EP Impurity H
Applications 2-(3-(tert-Butylamino)-2-hydroxypropyl)-4-morpholino-1,2,5-thiadiazol-3(2H)-one is a impurity of Timolol (T443710), an antihypertensive; antiarrhythmic (class II); antianginal; antiglaucoma agent.
References Lacroix, P.M., et. al.: Chirality, 6, 484 (1994); Wasson, et al.: J. Med. Chem., 15, 651 (1972); Franciosa, et al.: Clin. Pharmacol. Ther., 13, 138 (1972); Heel, R.C., et al.: Drugs, 17, 38 (1979); Rofman, B.A., et al.: Hypertension, 2, 643 (1980); Mazzo, D.J., et al.: Anal. Profiles Drug Subs., 16, 641 (1987)

Impurity Metoprolol EP Impurity A
Applications C-Desmethyl Metoprolol (Metoprolol EP Impurity A) is a new byproduct detected in Metoprolol tartrate. Metoprolol impurity.
References Erickson, M., et al.: J. Pharma. Biomed. Analysis, 13, 567 (1995), Phinney, K., et al.: Chirality, 15, 287 (2003), Zheng, J., et al.: Anal. Chem., 78, 1535 (2006),

Applications A Rosuvastatin (R700500) intermediate as HMG-CoA reductase inhibitor.
References Beck, et al.: J. Med. Chem., 33, 52 (1999),

Impurity Rosuvastatin EP Impurity G
Stability Hygroscopic
Applications ent-Rosuvastatin is an enantiomer of Rosuvastatin (R700500), an impurity which acts as a selective, competitive HMG-CoA reductase inhibitor (1). Antilipemic (2,3).
References 1. Watanabe, M. et al.: Bioorg. Med. Chem. 1997 Feb;5(2):437-44.2. Lee, E. et al.: Clin. Pharmacol. Ther. 2005 Oct;78(4):330-41.3. Ferdinand, C. et al.: Am. J. Cardiol. 2006 Jan 15;97(2):229-35.

Impurity Atenolol EP Impurity A
Applications 4-(Hydroxyphenyl)acetamide (Atenolol EP Impurity A) is used as an intermediate for the synthesis of Atenolol (A790075) and various other organic compounds and pharmaceuticals. It is a process impurity for Atenolol (A790075)
References Inkum, R., et al.: Maejo Int. J. Sci. Tech., 6, 372 (2012); Pai, N.R., et al.: J. Chem. Pharma. Rsch., 4, 375 (2012); Moon, J.T., et al.: Bio-org. Medn. Chem., 20, 734 (2012);

Stability Hygroscopic
Applications 2'-(2H-Tetrazol-5-yl)-[1,1'-biphenyl]-4-carboxylic Acid is a transformation product of Valsartan (V095750); a nonpeptide angiotensin II AT1-receptor antagonist and antihypertensive. 2'-(2H-Tetrazol-5-yl)-[1,1'-biphenyl]-4-carboxylic Acid is also referred to as Valsartan acid.
References Noedler, K., et al.: Water Res., 47, 6650 (2013); Criscione, L., et al.: Brit. J. Pharmacol., 110, 761 (1993); Muller, P., et al.: Eur. J. Clin. Pharmacol., 47, 231 (1994)

Impurity Verapamil EP Impurity J HCl
Applications Nor Verapamil Hydrochloride (Verapamil EP Impurity J HCl) is a metabolite of Verapamil.
References Mutlib, A.E., et al.: The Journal of Pharm. & Exp. Therapeutics, 252, 2, 593 (1989)

Applications An optically active metabolite of Carvedilol (C184625), a nonselective ß-adrenergic blocker with α1-blocking activity.
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 Sponer, G., et al.: J. Cardiovasc. Pharmacol., 9, 317 (1987), Fujimaki, M., ET AL.: Xenobiotica, 20, 1025 (1990), Ruffolo, R., et al.: Eur. J. Clin. Pharmacol., 38, S82 (1990), Schaefer, W.H., et al.: Drug Metab. Dispos., 26, 10, 958 (1998),

Impurity Atorvastatin Pyrrolidone Analog (USP)
Stability Light Sensitive
Applications A photodegradation product of Atorvastatin (a cyclic impurity of Atorvastatin). Atorvastatin Pyrrolidone Analog (USP).
References Roger, D., et al.: Clin. Exp. Dermatol., 19, 88 (1994), Cosa, G., et al.: Photochem. Photobiol., 80, 159 (2004), Kerwin, B., et al.: J. Pharm. Sci., 96, 1468 (2007),

Impurity Ezetimibe Tetrahydropyran Impurity
Applications Ezetimibe (E975000) tetrahydropyran impurity.