Benzimidazole and Imidazole Derivatives

<p>Stability Hygroscopic<br>Applications A metabolite of Scopolamine.<br>References Shutt, L., et al.: Anaesthesia, 34, 476 (1979), Wada, S., et al.: Xenobiotica, 21, 1289 (1991), Chen, X., et al.: Acta Pharm. Sin., 33, 849(1998),<br></p>

<p>Applications (2-Chlorophenyl)diphenylmethane is a triarylmethane with antiproliferative activity. (2-Chlorophenyl)diphenylmethane is an impurity of the antifungal agent Clotrimazole (C587400).<br>References Al-Qawasmeh, R.A. et al.: Bioorg. Med. Chem. Lett., 14, 347 (2004);<br></p>

<p>Applications An analog of Lorazepam (L469850). Sedative, hypnotic.Controlled substance (depressant).<br>References Nudelman, A., et al.: J. Pharma. Sci., 63, 1886 (1974), Humpel, M., et al.: Eur. J. Drug Metab. Pharmacokinet., 4, 237 (1979), Girkin, R., et al.: Xenobiotica, 10, 401 (1980),<br></p>

<p>Applications Metopimazine (MPZ) is used to prevent emesis during chemotherapies. Antiemetic.<br>References Catz, P., et al.: Int. J. Pharm., 58, 93 (1990), Sato, K., et al.: J. Pharm. Sci., 80, 104 (1991), Herrstedt, J., et al.: Cancer Chemother. Pharmacol., 33, 53 (1996), Sigsgaard, T., et al.: J. Clin. Onc., 19, 2091 (2001),<br></p>

<p>Applications S-Rivastigmine is an isomer of Rivastigmine ( an acetylcholinesterase inhibitor used in the treatment of neurological disorders such as Alzheimer’s disease.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Howes, L et al.: Drug. Safe., 37, 391 (2014); Shahar, O. et al.: Nucl. Acids Res., 42, 5869 (2014);<br></p>

<p>Applications A metabolite of Midazolam (M343000).<br></p>

<p>Applications Protected Varenicline metabolite.<br></p>

<p>Impurity Lansoprazole<br>Applications (3-Methyl-4-(2,2,2-trifluoroethoxy)pyridin-2-yl)methyl Acetate is an impurity of Lansoprazole (L175000). Lansoprazole is used as a gastric proton pump inhibitor and an antiulcerative. It May limit the severity of tuberculosis.<br>References Figgitt, D., et al.: Drugs, 60, 925 (2000); Katsuki, H., et al.: Eur. J. Clin. Pharmacol., 57, 709 (2001); Barradell, L.B., et al.: Drugs, 44, 225 (1992); Kim, K., et al.: Clin. Pharmacol. Ther., 72, 90 (2002); Niioka, T., et al.: Ther. Drug Monit., 28, 321 (2006); Chem. and Eng. News. p. 28 July 20 (2018)<br></p>

<p>Impurity Tinidazole EP Impurity B<br>Applications 4-Nitro-5-desnitro Tinidazole (Tinidazole EP Impurity B) is an impurity in the synthesis of Tinidazole (T443900), antiprotozoal (Trichomonas, Giardia); antiamebic; antibacterial.<br>References Miller, M.W., et al.: J. Med. Chem., 13, 849 (1970), Oderdea, G., et al.: Gut, 33, 1328 (1992),<br></p>

<p>Applications 2-Deschloro Tioconazole Hydrochloride is an analog of Tioconazole (T444680), an antifungal that is more active than Fluconazole (F421000) or Voriconazole (V760000) against Candida glabrata mutant strains. Antifungal (topical).<br>References Jevons, S., et al.: Antimicrob. Agents Chemother., 15, 597 (1979), Clayton, Y.M., et al.: Clin. Exp. Dermatol., 7, 543 (1982), Marriott, M.S., et al.: Dermatologica, 166, 1 (1983),<br></p>

<p>Applications Prazepam, is a benzodiazepine derivative drug having anxiolytic, anticonvulsant, sedative and skeletal muscle relaxant properties.<br>References Shader R. I., et al.: Ciba. Found. Symp., (74), 141 (1979); Jacqmin, P., et al.: Neuropsychobiology, 19 (4), 186 (1988);<br></p>

<p>Applications A labelled metabolite of Orphenadrine (O695300). An antidepressant prodrug.<br>References Watkins, P., et al.: J. Biol. Chem., 261, 6264 (1986), McNeil, C., et al.: Biochem. Pharmacol., 51, 15 (1996), Hiessbock, R., et al.: J. Med. Chem., 42, 1921 (1999),<br></p>

<p>Applications Labelled Metopimazine (MPZ) is used to prevent emesis during chemotherapies. Antiemetic.<br>References Catz, P., et al.: Int. J. Pharm., 58, 93 (1990), Sato, K., et al.: J. Pharm. Sci., 80, 104 (1991), Herrstedt, J., et al.: Cancer Chemother. Pharmacol., 33, 53 (1996), Sigsgaard, T., et al.: J. Clin. Onc., 19, 2091 (2001),<br></p>

<p>Impurity Itraconazole EP Impurity E<br>Applications trans-Itraconazole (Itraconazole EP Impurity E) is a geometrical isomer of Itraconazole (I937500). It is a COVID19-related research product.<br>References Ahn, C., et al.: J. Korean Chem. Soc., 43, 676 (1999),<br></p>

<p>Impurity Voriconazole EP Impurity D; Voriconazole USP Related Compound B<br>Applications ent-Voriconazole (Voriconazole USP Related Compound B; Voriconazole EP Impurity D) is the (2S,3R) enantiomer in Voriconazole (V760000) drug substance.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Gage, R., et al.: J. Pharm. Biomed. Anal., 17, 1449 (1998), Owens, P., et al.: Enantiomer, 4, 79 (1999), Pehourcq, F., et al.: Biomed. Chromatogr., 18, 719 (2004), Sellers, J., et al.: J. Pharm. Biomed. Anal., 41, 1088 (2006),<br></p>

<p>Applications Lurasidone Opened Imide is an impurity in the synthesis of Lurasidone (L474920) which is antipsychotic used for treatment of schizophrenia.<br>References Ishiyama, T., et al.: Eur. J. Pharmacol., 572, 160 (2007); Cole, P., et al.: Drugs of the Fut., 33, 316 (2008);<br></p>

<p>Applications 1-(1H-Benzo[d]imidazol-2-yl)-3-methyl-4-oxo-1,4-dihydropyridine-2-carboxylic acid is an impurity of Rabeprazole. It is also a degradation product formed in stressed tablets of Rabeprazole sodium.<br>References Kommanaboyina, B., et al.: Drug Dev. Ind. Pharm., 25, 857 (1999); Carswel, C., et al.: Drugs, 61, 2327 (2001); Garcia, C., et al.: J. Pharm. Biomed. Anal., 46, 88 (2008)<br></p>

<p>Applications An intermediate in the preparation of Carbamazepine metabolites.<br>References Heckendorn, R., et al.: Helv. Chimica Acta, 70, 1955 (1987),<br></p>

<p>Applications Trimebutine-d9 Maleate Salt, is the labeled analogue of Trimebutine Maleate Salt (T795605), acting as an opioid receptor agonist. Antispasmodic.<br>References Delvaux, M., et al.: J. Int. Med. Res., 25, 225 (1997), Lavit, M., et al.: Arzneim.-Forsch., 50, 640 (2000),<br></p>

<p>Applications Itraconazole Desethylene-seco-piperazine Mono-N-formyl Impurity of Itraconazole (I937500). Itraconazole is an orally active antimycotic structurally related to Ketoconazole. Antifungal. It is a COVID19-related research product.<br>References Espinel-Ingroff, A., et al.: Antimicrob. Agents Chemother., 26, 5 (1984), Heykants, J., et al.: Mycoses, 32, Suppl 1, 67 (1989), Sugar, A.M.,et al.: Curr. Clin. Top. Infect. Dis., 13, 74 (1993),<br></p>

<p>Applications (Chloromethyl)cyclohexane is a common chemical reagent used in the synthesis of imidazole inhibitors of cytokine release which suppresses the response to tumor necrosis factor.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Laufer, S. et al., J. Med. Chem., 45, 1695 (2002); Rabinowitz, M. et al.: J. Med. Chem., 44, 4252 (2001);<br></p>

<p>Impurity Itraconazole EP Impurity A<br>Applications 2-(2-Butyl)-4-{4-[4-(4-methyloxy-phenyl)-piperazin-1-yl]-phenyl}-2,4-dihydro-[1,2,4]-triazol-3-one (Itraconazole EP Impurity A) is an intermediate of Itraconazole.<br></p>

<p>Applications (R)-1-Methyl-3-pyrrolidinol is a useful synthetic intermediate. It is used for asymmetric synthesis of constrained (-)-S-adenosyl-L-homocysteine (SAH) analogs as DNA methyltransferase inhibitors.<br>References Isakovic, L., et al.: Bioorg. Med. Chem. Lett., 19, 2742 (2009); Gobbini, M., et al.:J. Med. Chem., 51, 4601 (2008)<br></p>

<p>Applications (S)-5,6-Dehydro Pregabalin is derived from rac 5,6-Dehydro Pregabalin (D230055), which is an impurity of the anti-convulsant, Pregabalin (P704800).<br>References Dousa, M, et al.: J. Pharmac. Biomed. Anal., 53, 717 (2010);<br></p>

<p>Albendazole is an anti-helminthic drug that is structurally classified as a benzimidazole. It has been shown to be effective against a variety of helminths, including roundworms, pinworms, hookworms, and tapeworms. Albendazole impurity F is an analytical standard for the determination of albendazole in pharmaceutical products by HPLC. It also serves as a reference substance to establish the purity of drug products containing albendazole and its metabolites. Albendazole impurity F is not considered to be a metabolite of albendazole because it has been shown to be stable under acidic conditions and can be synthesized from other starting materials.</p>

<p>Oxybutynin EP Impurity E is a research and development impurity standard that is used in the synthesis of Oxybutynin. It can be synthesized by reacting 2-chloro-4-nitroaniline with potassium tert-butoxide, followed by acetylation with acetic anhydride. The purity and structure of this compound have been verified by gas chromatography, mass spectrometry, and melting point analysis. This impurity standard has a CAS number of 1215677-72-7.<br>Oxybutynin EP Impurity E is used as a drug product for the treatment of overactive bladder, urinary incontinence, and painful bladder syndrome/interstitial cystitis. It also helps to reduce pain due to spinal cord injury or multiple sclerosis. <br>The pharmacopoeia name for this compound is 4-(2-Chloroethyl)-1H-imidazoleacetic acid. It has been found to be</p>

<p>Oxybutynin impurity C is a metabolite of the drug product Oxybutynin (CAS No. 1199574-70-3). It is an analytical standard for HPLC, and a natural impurity in the synthesis of Oxybutynin. This is a synthetic compound that has been shown to be metabolized through oxidation by cytochrome P450 enzymes, reduction by glutathione reductase, or conjugation with glucuronic acid. Oxybutynin impurity C has been used as an analytical reference material for drug development and research and development.</p>

<p>2-Methoxy-5-methyl-gamma-phenylbenzenepropanol is a synthetic compound that is used as an intermediate in the synthesis of coumarin derivatives. Reaction with sulfonating agents produces sulfones, and reaction with borohydride reagents produces boronates. The synthesis of 2-methoxy-5-methyl-gamma-phenylbenzenepropanol can be accomplished by the reduction of diphenyl ethers with lithium aluminum hydride or borohydride. The reduction can also be carried out using lanthanum oxide and potassium borohydride. The reaction proceeds smoothly at room temperature in nonpolar solvents.<br>2-Methoxy-5-methyl-gamma-phenylbenzenepropanol reacts with chloride to produce the corresponding chlorides, which are useful intermediates for the synthesis of tolterodine tartrate, a drug used to treat urinary inc</p>

<p>6-Methyl-4-phenyl-3,4-dihydro-1-benzopyran-2-one is an analog of the natural product zearalenone, which can be used as an acid catalyst for the synthesis of various pharmaceuticals. It has a linear range and is structurally similar to a number of other analogs. The chloride ion is involved in the optimization of the extraction parameters and can be replaced by other c1-4 alkyl groups. 6-Methyl-4-phenyl-3,4-dihydro-1 -benzopyran 2 one is typically prepared using a preparative high performance liquid chromatography technique that involves dehydration.</p>

<p>Pantoprazole sulfone N-oxide is a prodrug that is converted to the active form pantoprazole in the stomach where it inhibits gastric acid secretion. Pantoprazole sulfone N-oxide has been shown to be genotoxic, and can cause polyvinyl chloride to degrade when stored together. Reconstituted solution of this drug should be used within 24 hours after reconstitution, as the chemical stability of this drug decreases rapidly. Validation studies have been conducted on different analytical methods for determining pantoprazole concentrations in reconstituted solutions, and these methods have been harmonized with those published by the United States Pharmacopeia (USP). The pump inhibitor activity of pantoprazole sulfone N-oxide has been demonstrated in dogs, and it is also useful for treating acid reflux disease in humans. Pantoprazole sulfone N-oxide is unstable at high temperatures (&gt;25°C), so should not be refrigerated or</p>

<p>Solifenacin is an anti-cholinergic drug that has been shown to have a potent antagonistic effect on muscarinic receptors. It is used in the treatment of overactive bladder, urinary incontinence, and irritable bowel syndrome. Solifenacin succinate is a metabolite of solifenacin and it has been found to be an antagonist of M3 muscarinic receptors. The presence of solifenacin and its metabolites in wastewater can interfere with treatment processes by inhibiting the removal of other organic chemicals such as tamsulosin hydrochloride. Optimisation studies for solifenacin production have shown that famotidine can be used as a process aid to reduce solifenacin impurities. Famotidine is also an antagonist of M3 muscarinic receptors and can be used to remove solifenacin from wastewater. Analytes detected in wastewater samples include solifenacin, famot</p>

<p>2-[(4-Methoxy-3-methyl-2-pyridinyl)methyl]sulfinyl]-1H-benzimidazole is a synthetic, impurity standard that is used in the synthesis of drug products. It has been shown to inhibit the metabolism of drugs and may be used as a marker for drug metabolism. This compound may also be used as a marker in analytical studies to assess the purity of a drug product. 2-[(4-Methoxy-3-methyl-2-pyridinyl)methyl]sulfinyl]-1H-benzimidazole has not been evaluated for safety or efficacy.</p>

<p>7-Hydroxyhyoscyamine is an antibacterial agent that is used in the treatment of bacterial infections. It has been shown to inhibit the growth of a number of bacteria including Staphylococcus aureus, Streptococcus pyogenes, and Escherichia coli. 7-Hydroxyhyoscyamine has been shown to be more potent than 6-hydroxyhyoscyamine (6-OH Hya) for inhibiting protein synthesis in the bacteria. The compound does not have any psychoactive effects, unlike atropine sulfate, which is also an alkaloid found in plants from the Solanaceae family. 7-Hydroxyhyoscyamine can be synthesized by reacting atropine with nitrous acid or hydrochloric acid. This synthetic process leads to n-oxides as impurities, which can be removed by using a reversed phase high performance liquid chromatography (RP HPLC). Validation of this</p>

<p>Please enquire for more information about N-Methyl omeprazole (Mixture of isomers with the methylated nitrogens of imidazole) including the price, delivery time and more detailed product information at the technical inquiry form on this page</p>

<p>1-[[4-(3-Methoxypropoxy)-3-methyl-2-pyridinyl]methyl]-2-[[[4-(3-methoxypropoxy)-3-methyl-2-pyridinyl]methyl]thio]-1H-benzimidazole is a drug product with analytical applications. It has been shown to have natural and synthetic origins, as well as impurities of its own. It is a custom synthesis and research and development compound that is used for HPLC standardization. The compound has been synthesized for the purpose of drug development and it is intended for niche use.</p>

<p>Oxybutynin EP impurity A is a metabolite of oxybutynin, an antispasmodic drug. It has been shown to have immunomodulatory effects in a rat model of adjuvant arthritis. Oxybutynin EP impurity A is the major metabolite of oxybutynin and has been shown to be pharmacologically active in humans.</p>

<p>2-Methyl-3,4-dimethoxy pyridine hydrochloride is an analytical standard that is used as a reference compound in the pharmaceutical industry to identify impurities in drug products. It also has a niche use as an API impurity and HPLC standard. 2-Methyl-3,4-dimethoxy pyridine hydrochloride is used as an intermediate for the synthesis of other drugs, including benzodiazepines and beta blockers. It is also used in research and development for its high purity. This chemical is natural or synthetic in origin but can be custom synthesized to meet specific requirements. 2-Methyl-3,4-dimethoxy pyridine hydrochloride also has CAS number 1210824-88-6.</p>

<p>Desdifluoromethoxy hydroxy pantoprazole is a synthetic compound that is used as an impurity standard for the drug product Pantoprazole. It has a purity of ≥98% and is stable under ambient conditions. Desdifluoromethoxy hydroxy pantoprazole is not active on its own, but it is a metabolite of pantoprazole. It can be used to study the metabolism of pantoprazole.</p>

<p>Carbamazepine is a drug that has been used to treat epileptic seizures and trigeminal neuralgia. Impurities in the drug are removed by using chromatographic methods, such as high-performance liquid chromatography (HPLC). The rotarod test is an animal model of motor coordination and balance that can be used to assess the effects of drugs on these functions. Carbamazepine impurities may cause depression and have an epileptic effect on animals. Chronic exposure to carbamazepine can lead to drug reactions and gene polymorphisms, which may alter the metabolism of the drug. Analytical methods for determining carbamazepine impurities include HPLC, gas chromatography mass spectrometry (GC-MS), and thin-layer chromatography (TLC).</p>

<p>Ethyl (S)-1-phenyl-1,2,3,4-tetrahydro-2-isoquinolinecarboxylate is an analytical standard used to identify impurities in drug products. It is a metabolite of the drug product and has been shown to be safe for human consumption. The compound is a synthetic chemical that is not found naturally in the environment. CAS No. 180468-42-2</p>

<p>1-Phenyl-1,2,3,4-tetrahydro-isoquinoline is a synthetic compound which has been used as a lead compound for the development of drugs with dopamine β-hydroxylase inhibitory activity. In vitro studies have shown that 1-phenyl-1,2,3,4-tetrahydro-isoquinoline inhibits human serum dopamine β-hydroxylase and can be used to study the possible role of this enzyme in Parkinson's disease. This drug is racemized in the body and has been found to be effective against Parkinson's disease in rats. It is also an enantiomer that has industrial applications for the production of polyurethane foam insulation coatings.</p>

<p>Lactose conjugate degradation product of pregabalin</p>

<p>2,12-Dihydro-1,3-dimethyl-8-methoxy-12-thioxobenzo [4,5] pyrido [1,2-c] imidazo [1,2-a] imidazol-2-one is a metabolite of the drug 2-[2-(4,5,-dihydroimidazo[1,2a]imidazol -2(3H)-yl)ethoxy]-N-(methylsulfonyl)benzamide. It can be used as an impurity standard for the manufacture of drugs and as a research chemical.</p>

<p>2-[[(4-Chloro-3-methyl-2-pyridinyl)methyl]sulfinyl]-1H-benzimidazole (CAS No. 168167-42-8) is a synthetic compound that is used as an analytical reference standard for HPLC. It is also used in the study of drug metabolism, and it has been shown to induce natural oxidation in vitro. 2-[(4-Chloro-3-methylpyridinium)methylsulfinyl]-1Hbenzimidazole is an impurity found in pharmaceutical products that are synthesized from 1-(2,4,6trichlorophenyl)-3-[(4chloromethyl)phenyl]urea.</p>

<p>Lactose conjugate degradation product of pregabalin</p>