Benzimidazole and Imidazole Derivatives

<p>Stability Hygroscopic<br>Applications Omeprazole Sodium Salt is the salt analogue of Omeprazole (O635000), which binds covalently to proton pump. It inhibits gastric secretion. Used as an anttiulcerative.<br>References Muller, P., et al.: Arzneimittel-Forsch., 33, 1685 (1983); Wallmark, B., et al.: Biochim. Biophys. Acta., 778, 549 (1984); Morii, M., et al.: J. Biol. chem., 268, 21553 (1993); Ritter, M., et al.: Br. J. Pharmacol., 124, 627 (1998)<br></p>

<p>Impurity Carbamazepine EP Impurity G<br>Applications 10-Bromo-5H-dibenzo[b,f]azepine-5-carboxamide is a Carbamazepine (C175840(P)) impurity, which has been used in treatment of pain associated with trigeminal neuralgia. It is an anticonvulsant, neuroprotective &amp; neuroresearch product.<br>References Cry, T., et. al.: J. Assoc. Official Anal. Chem., 70, 836 (1987); Stenger, E.G., et al.: Med. Exp., 11, 191 (1964); Pynnonen, S., et al.: Ther. Drug Monit., 1, 409 (1979); Sidebottom, A., et al.: J. Clin. Pharm. Ther., 20, 31 (1995)<br></p>

<p>Applications N-Acetylethanolamine can be used as an antistatic agent, foam boosting agent, hair conditioning humectant, skin conditioning surfactant and viscosity controlling agent in cosmetics industry. It is a non-tacky glycerine alternative for use in skin and hair care.<br>References Hough, L., et al.: J. Chem. Soc., 7923994-3997 (1957); Auzanneau, F-I, et al.: J. Chem. Soc., 10, 2831-2834 (1990);<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>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 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 Oxybutynin-d10 Hydrochloride is a labeled analogue of Oxybutynin Chloride (O868525), an inhibitor of proliferation and supresses gene expression in bladder smooth muscle cells.<br>References Park, J.M., et al.: J. Urol., 162, 1110 (1999); Watson, M., et al.: Brit. J. Pharmacol., 127, 590 (1999)<br></p>

<p>Applications (αS)-N,N,α-Trimethyl-3-(4-nitrophenoxy)benzenemethanamine is an impurity of Rivastigmine Tartrate (R541000). Rivastigmine Tartrate is a brain selective acetylcholinesterase inhibitor.<br>References Rosler, M., et al.: Brit. Med. J., 318, 633 (1999); Enz, A., et al.: Prog. Brain Res., 98, 431 (1993)<br></p>

<p>Applications Labelled Triazolam (T767380(M)). Triazolam in an hypnotic drug used in the short term treatment of insomnia.<br>References Lomen, P., et al.: J. Int. Med. Res., 4, 55 (1976), Allens, G.S., et al.: J. Int. Med. Res., 6, 343 (1978), Pakes, G.E., et al.: Drugs, 22, 81 (1981).<br></p>

<p>Applications An achiral intermediate of Voriconazole (V760000).<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 Ferretti, R., et al.: Chromatographia, 47, 649 (1998),<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>Applications A metabolite of Midazolam (M343000).<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 4,4'-Dibromobenzophenone is a reagent used in the synthesis of polyelectrolytes which serve as fluorescent visualizers for intracellular imaging with good biocompatibility.<br>References Hu, R., et al.: Chem. Asian J., 8, 2436-2445 (2013)<br></p>

<p>Applications 3-Hydroxy-1-methyl-1-Azoniabicyclo[2.2.2]octane is an impurity in the synthesis of Clidinium Bromide (C576250), an anticholinergic. Used as an antispasmodic.<br>References Zhang, L., et al.: Pharm. Res., 25, 1902 (2008), Sanderson, H., et al.: Toxicol Lett., 187, 84 (2009),<br></p>

<p>Applications Scopolamine Sulfate is an impurity of Scopolamine (S200000), an acetylcholine antagonist used in the treatment of motion sickness and also used as antiemetic, antispasmodic, mydriatic, preanesthetic agents.<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 Trendelenburg P., et al.: Archiv fuer Exper. Pathol. Pharmacol., 73, 118 (1914);<br></p>

<p>Impurity Rabeprazole EP Impurity C<br>Applications 1-(1H-Benzo[d]imidazol-2-yl)-3-methyl-4-oxo-1,4-dihydropyridine-2-carboxylic acid (&gt;75%) (Rabeprazole EP Impurity C) is a Rabeprazole (R070500) impurity. 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 Labelled (S)-Modafinil. Used for treatment of excessive sleepiness, α1-adrenoceptor agonist.<br>References Saletu, B., et al.: Int. J. Clin. Pharmacol. Res., 9, 183 (1989), Chemelli, R.M., et al.: Cell, 98, 437 (1999), Purnell, M., et al.: J. Sleep Res., 11, 219 (2002), Dinges, D., et al.: Curr. Med. Res. Opin., 22, 159 (2006)<br></p>

<p>Lansoprazole impurity H is a metabolite of lansoprazole, a proton pump inhibitor that inhibits the production of stomach acid. Lansoprazole impurity H is used in research and development as an analytical standard to measure lansoprazole concentrations in drug products. It is also used as an impurity standard for pharmacopoeia purposes. Lansoprazole impurity H is not known to be toxic, but it has not been evaluated for carcinogenicity or reproductive toxicity.</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>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>Pantoprazole is a proton pump inhibitor that inhibits the gastric acid secretion by blocking the hydrogen/potassium ATPase enzyme in the stomach. Pantoprazole N-oxide, a prodrug of pantoprazole, is converted to pantoprazole after administration and has been shown to be more stable than pantoprazole. It has been shown to have tissue-specific effects, with high concentrations found in gastrointestinal tissues such as the abomasum, ileum, and colon. Pantoprazole N-oxide is also found in plasma samples at low levels. This drug may be useful for ulceration because it prevents heartburn caused by excess stomach acid.</p>

<p>Solifenacin impurity C is an impurity that is found in the drug product Solifenacin. It has been shown to be a natural metabolite and has been detected in human urine. Solifenacin impurity C is used as an analytical standard for HPLC analyses of solifenacin, and can also be used as a reference material for pharmacopoeia. The purity of this compound is 99%.</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>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>Amino albendazole sulfone is an anthelmintic drug that is used to treat worm infestations in animals. It is the active metabolite of fenbendazole sulfone and has a terminal half-life of 12 hours in humans. Amino albendazole sulfone can be prepared by chromatographic methods, such as liquid chromatography or gas chromatography, and it can be analyzed with a fluorescence detector. This drug has been shown to have a concentration–time curve following administration to rats and results in an increase in the number of worms eliminated from the body.</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>2-(3-(1-Benzylpiperidin-4-yl)-2-oxopropyl)-4,5-dimethoxybenzoic acid is a synthetic compound that is being researched as a potential drug product. It is an impurity standard for HPLC and has been used in the past to develop drugs. The chemical structure of this compound closely resembles that of the natural metabolite 4,5-dimethoxybenzoic acid, which is found in plants such as thyme. 2-(3-(1-Benzylpiperidin-4-yl)-2-oxopropyl)-4,5-dimethoxybenzoic acid has shown to inhibit human cytochrome P450 enzymes, which may lead to serious side effects when taken orally.</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>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>1-[[3-Methyl-4-(2,2,2-trifluoroethoxy)-2-pyridinyl]methyl]-2-[[[3-methyl-4-(2,2,2-trifluoroethoxy)-2-pyridinyl]methyl]thio]-1H-benzi midazole is a high purity analytical standard that is used to calibrate HPLC. It is found as an impurity in the drug product and as a metabolite. 1-[(3-Methyl-4-(2,2,2 -trifluoroethoxy) - 2 - pyridinyl) methyl] - 2 - [[[3 - methyl (4 ( 2 , 2 , 2 - trifluoroethoxy) - 2 pyridinyl) methyl] thio] - 1 H benzimidazole is the IUPAC name for this compound. This chemical has been synthesized</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>Lamotrigine is a chemically unrelated compound, which is the active ingredient of a new class of adjuvant drugs for epilepsy. This drug has been found to be effective against seizures in patients with partial seizures and generalized seizures. Lamotrigine is an orally administered suspensoid that can be mixed with water or other liquids to form a suspension. It has been used as a flavouring agent and an adjuvant in pharmaceuticals, including tablets and capsules. The chemical structure of lamotrigine includes two 2,3-dichlorophenyl groups connected by an amino group (guanidinoimino). This structure gives lamotrigine its chemical name: 2-(2,3-dichlorophenyl)-2-(guanidinoimino) acetonitrile.</p>

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

<p>Albendazole sulfone is a metabolite of the drug albendazole. It is used as an analytical standard to measure the concentration of albendazole in human plasma and urine samples. The concentration-time curve for albendazole sulfone can be determined using a nonlinear regression analysis, with the rate constant being calculated from the slope and intercept. This method has been shown to be accurate for predicting pharmacokinetic parameters in humans. Albendazole sulfone is also used as a probe in wastewater treatment studies, where it binds to colloidal gold particles that are used to visualize the removal of small particles by microorganisms.</p>

<p>1-[[3-Methyl-4-(2,2,2-trifluoroethoxy)-2-pyridinyl]methyl]-2-[[[3-methyl-4-(2,2,2-trifluoroethoxy)-2-pyridinyl]methyl]sulfinyl]-1H-b enzimidazole is an impurity of a drug product. It is a metabolite that has been shown to be present in human plasma and urine. This compound is synthetically produced and is not found in nature. It has been shown to have niche applications in both analytical chemistry and pharmacopoeia.</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>Lactose conjugate degradation product of pregabalin</p>

<p>2-Hydroxy-5-methylphenylbenzenepropanol is an aliphatic phenol that is used as a treatment for benzene poisoning. It is also used as a precursor to other compounds, such as the chlorides and alkylates of 2-hydroxy-5-methylphenylbenzenepropanol. This compound can be synthesized by reacting ethyl benzoylacetate with diisopropylamine in the presence of oxygen and chlorine gas. It is often immobilized using nutrients, l-tartaric acid, or cinnamic acid.</p>

<p>Tiotropium Bromide EP Impurity G is an anticholinergic bronchodilator that is used in the treatment of asthma. Tiotropium Bromide EP Impurity G has been shown to have long-acting properties, with a half-life of about 20 hours. It has a high affinity for the muscarinic receptor and acts as a competitive antagonist at this site. Tiotropium Bromide EP Impurity G also has a cavity, which may be necessary for its activity.</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>2,12-Dihydro-1,3-dimethyl-9-methoxy-12-thioxobenzo [4,5] pyrido [1,2-c] imidazo [1,2-a] imidazol-2-one is a synthetic compound that has not been evaluated in humans. This compound is an impurity standard for the synthesis of an API. The purity of this compound is &gt;98% and it has been shown to be stable under acidic conditions.</p>

<p>cis-(±)-4-[4-[4-[4-[[2-(2,4-Dichlorophenyl)-2-(1H-1,2,4-triazol-1-ylmethyl)-1,3-dioxolan-4-yl]methoxy]phenyl]-1-piperazinyl]phenyl]- 2,4-dihydro-2-propyl-3H-1,2,4-triazol-3-one is a drug product that is used as a research and development tool. It is an impurity standard for HPLC. This compound has a chemical name of cis-(±)-4-[4-[4-[4-(hydroxymethyl)phenyl]-1piperazinyl]phenyl]-2, 4dihydro 2propyl 3H 1 2 4 triazol 3one. The CAS number for this compound is 7485591 7. This compound</p>

<p>(R)-1-Phenyl-1,2,3,4-tetrahydroisoquinoline is a chiral molecule with four stereocenters. It is synthesized by the reaction of sulfamic acid and cyclohexene in the presence of p-toluenesulfonic acid. The product formed is then dehydrogenated to produce (R)-1-phenyl-1,2,3,4-tetrahydroisoquinoline. This compound is soluble in organic solvents such as benzene and ethane and can be used as an acceptor for chiral stationary phases.</p>

<p>Dehydrodeoxy donepezil is an analytical standard that is used in the manufacture of pharmaceuticals. It is a synthetic drug impurity, and its CAS number is 120013-45-8. Dehydrodeoxy donepezil can be found in the API impurity grade of various drugs, including those that are manufactured by Custom synthesis and natural synthesis. The pharmacopoeia states that dehydrodeoxy donepezil has a purity level of 98% or greater. This product can also be found as a metabolite in humans, with its half-life being approximately 40 minutes.</p>

<p>N-Desalkyl itraconazole is a triazole antifungal drug that belongs to the group of medicines. It is used in the treatment of systemic mycoses, including blastomycosis and histoplasmosis. N-Desalkyl itraconazole has been shown to inhibit the growth of fungi by interfering with their cell membranes and inhibiting their production of ergosterol. Calibration studies have shown that this drug binds to human liver microsomes and plasma proteins, as well as transporters such as P-glycoprotein. These interactions may influence its pharmacokinetics, which can be determined using a bioanalytical method.</p>

<p>2-Methoxy-5-methyL-N,N-bis(1-methyLethyl)-gamma-phenyLbenzenepropanamine fumarate (DMXBPC) is an analgesic that has been shown to be a potent inhibitor of the cytosolic phospholipase A2 and is also cytotoxic. DMXBPC has significant cholinergic activity and can inhibit the synthesis of prostaglandins in the prostate gland. DMXBPC binds to the pyridine ring of DOPA and inhibits its conversion to dopamine. The enantiomers of DMXBPC have different effects on inhibition of phospholipase A2, with the (+) form being more potent than the (-) form. This is due to the fact that (+)DMXBPC binds more tightly to the enzyme than (-)DMXBPC does.</p>