
Benzimidazole and Imidazole Derivatives
Benzimidazole is a compound consisting of a benzene ring fused to an imidazole ring, a five-membered structure containing two nitrogen atoms. Benzimidazole derivatives, such as albendazole, are known for their antiparasitic and antifungal activity, used in the treatment of parasitic infections and certain parasitic diseases in animals and humans. Imidazole, on the other hand, is a five-membered structure with two nitrogen atoms found in various biologically active compounds. Imidazole derivatives, such as metronidazole, have antimicrobial and antiparasitic properties. These compounds are also used in the pharmaceutical industry for treating bacterial infections, parasitic diseases, and some fungal infections, as well as in organic chemistry as catalysts.
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Found 10354 products of "Benzimidazole and Imidazole Derivatives"
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Atropic Acid
CAS:<p>Impurity Ipratropium EP Impurity D<br>Stability Light Sensitive<br>Applications Atropic acid (Ipratropium EP Impurity D) is an impurity of Ipratropium bromide (I740500) and Atropine Sulfate (A794625).<br>References Lyon, R., et al.: J. Pharm. Sci., 95, 1549 (2006), Loch, M., et al.: Toxicology, 233, 229 (2007), John, H., et al.: Anal. Bioanal. Chem., 396, 751 (2010),<br></p>Formula:C9H8O2Color and Shape:Off-WhiteMolecular weight:148.16rac Desethyl Oxybutynin-d5 Hydrochloride
CAS:Controlled Product<p>Applications A labelled metabolite of the drug Oxybutynin (D289475). Used in the treatment of incontinence.<br>References Hughes, K., et al.: Xenobiotica, 22, 859 (1992), Oki, T., et al.: Biol. Pharm. Bull., 24, 491 (2001), Fetscher, C., et al.: Br. J. Pharmacol., 136, 64 (2002), Zobrist, R., et al.: Pharm. Res., 20, 103 (2003)<br></p>Formula:C20H22D5NO3·HClColor and Shape:White To Off-WhiteMolecular weight:334.47 + (36.46)Des [3-(1-Dimethylamino)ethyl] 3-Acetyl Rivastigmine
CAS:Controlled Product<p>Impurity Rivastigmine EP Impurity C; USP Related Compound D<br>Applications Des [3-(1-dimethylamino)ethyl] 3-acetyl Rivastigmine (Rivastigmine EP Impurity C) is a derivative of Rivastigmine (Tartrate: R541000), and acetylcholinesterase inhibitor that is commonly used to treat dementia associated with Parkinson’s disease and Alzheimer’s disease.<br>References Emre, M., et al.: New. Engl. J. Med., 351, 2509 (2004); Polinsky, R.: Clin. Ther., 20, 634 (1998); Wilkinson, D., et al.: Int. J. Clin. Pract., 56, 441 (2001)<br></p>Formula:C12H15NO3Color and Shape:Off-WhiteMolecular weight:221.25Propantheline Bromide
CAS:Controlled Product<p>Applications Propantheline is an antimuscarinic agent used in the treatment of hyperhidrosis (excessive sweating), enuresis (involuntary urination) as well as cramps or spasms of the stomach, intestine and bladder.<br>References Levin, R. et al.: Neurol. Urodyn., 1, 221 (1982); Daniotti, S. et al.: Br. J. Pharmacol., 82, 305 (1984); Moller, J. et al .: Acta Med. Scand., 184, 201 (1968);<br></p>Formula:C23H30NO3·BrColor and Shape:White To Off-WhiteMolecular weight:448.39Oxazepam
CAS:Controlled Product<p>Applications Anxiolytic; muscle relaxant (skeletal); anticonvulsant; ligand for the GABAA receptor benzodiazepine modulatory site. Controlled substance (depressant).<br>References Goldenthal, E.I., et al.: Toxicol. Appl. Pharmacol., 18, 185 (1971), Sisenwine, et al.: Arzneim. Forsch., 22, 682 (1972), Shearer, C.M., et al.: Anal. Profiles Drug Subs., 3, 441 (1974), Greenblatt, D.J., et al.: Clin. Pharmacokinet., 6, 89 (1981),<br></p>Formula:C15H11ClN2O2Color and Shape:White To Off-WhiteMolecular weight:286.71(S)-N-((3-(4-(1,1-DIOXIDOTHIOMORPHOLINO)-3-FLUOROPHENYL)-2-OXOOXAZOLIDIN-5-YL)METHYL)ACETAMIDE
Purity:95.0%Molecular weight:385.41000366210943a,4,5,6-Tetrahydro Midazolam
CAS:Controlled Product<p>Applications 3a,4,5,6-Tetrahydro Midazolam is an impurity of Midazolam (M343000), a drug used for the treatment of acute seizures and is also known to exhibit activities as an anticonvulsant, sedative, and hypnotic.<br>References Dundee, J. W., et al.: Drugs, 28, 519 (1984); Lahat, E., et al.: Br. Med. J., 321, 83 (2000); Sati, B., et al.: Acta Pharm., 63, 385 (2013);<br></p>Formula:C18H17ClFN3Color and Shape:NeatMolecular weight:329.804-Hydroxy Omeprazole Sulfide
CAS:Controlled Product<p>Stability Light Sensitive<br>Applications An intermediate in the preparation of Omeprazole metabolites.<br>References Hoffmann, K., et al.: Drug Metab. Disposition, 14, 341 (1986), Andersson, T., et al.: Brit. J. Clin. Pharmacol., 36, 521 (1993),<br></p>Formula:C16H17N3O2SColor and Shape:NeatMolecular weight:315.393-Methoxy-5-(5-methyl-tetrazol-1-yl)-phenylamine
CAS:Formula:C9H11N5OPurity:95.0%Color and Shape:PowderMolecular weight:205.221Modafinil Carboxylate Methyl Ester
CAS:Controlled Product<p>Impurity Modafinil EP Impurity C<br>Applications Modafinil Carboxylate Methyl Ester (Modafinil EP Impurity C) is a Modafinil derivative.<br>References Lehr, H., et al.: J. Med. Chem., 6, 136 (1963), Saikawa, I., et al.: Chem. Pharm. Bull., 33, 5534 (1985),<br></p>Formula:C16H16O3SColor and Shape:NeatMolecular weight:288.36Benzyl (3-fluoro-4-(6-(2-methyl-2H-tetrazol-5-yl)pyridin-3-yl)phenyl)carbamate
CAS:Purity:97%Molecular weight:404.40499877929692-(phenoxymethyl)-1H-benzimidazole
CAS:Purity:95.0%Color and Shape:Solid, Light brown powderMolecular weight:224.263000488281253,5-Dimethyl-2-pyridinemethanol
CAS:Controlled Product<p>Applications Intermediate in the preparation of Omeprazole metabolites<br></p>Formula:C8H11NOColor and Shape:Colourless To BrownMolecular weight:137.1797-METHYL-5-NITRO-1H-INDAZOLE
CAS:Purity:95.0%Color and Shape:SolidMolecular weight:177.162994384765626-(1-METHYL-1H-PYRAZOL-4-YL)-3-((2-METHYL-2H-INDAZOL-5-YL)THIO)-[1,2,4]TRIAZOLO[4,3-B]PYRIDAZINE
CAS:Purity:95.0%Molecular weight:362.4200134277344Oxybutynin N-Oxide 90%
CAS:Controlled Product<p>Applications A metabolite of Oxybutynin.<br>References Hughes, K., et al.: Xenobiotica, 22, 859 (1992), Oki, T., et al.: Biol. Pharm. Bull., 24, 491 (2001), Fetscher, C., et al.: Br. J. Pharmacol., 136, 64 (2002), Zobrist, R., et al.: Pharm. Res., 20, 103 (2003)<br></p>Formula:C22H31NO4Purity:90%Color and Shape:NeatMolecular weight:373.49N-Demethyl Trimebutine-d5 Hydrochloride
CAS:Controlled Product<p>Applications The main bioactive labelled metabolite of Trimebutine.<br>References Miura, Y., et al.: Drug Metab. Dispos., 17, 455 (1989), Xue, L., et al.: Eur. J. Pharmacol., 294, 75 (1995), Roman, F., et al.: J. Pharmacol. Exp. Ther., 289, 1391 (1999), Kayser, V., et al.: Life Sci., 66, 433 (2000),<br></p>Formula:C21H22D5NO5·HClColor and Shape:NeatMolecular weight:414.93Scopolamine-d3 Hydrobromide Hydrate
CAS:Controlled Product<p>Stability Hygroscopic<br>Applications An acetylcholine antagonist. Used in treatment of motion sickness; antiemetic; antispasmodic; mydriatic; preanesthetic medicant.<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 Brand, J.J., et al.: Lancet, 2, 232 (1970), Bowles, J.B., et al.: Anaesthesia, 34, 476 (1979), Clissold, S.P., et al.: Drugs, 29, 189 (1985), Muhtadi, F.J., et al.: Anal. Profiles Drug Subs., 19, 477 (1990),<br></p>Formula:C17H18D3NO4·BrH·xH2OColor and Shape:NeatMolecular weight:387.284-(1H-1,2,4-Triazol-1-ylmethyl)benzonitrile
CAS:Controlled ProductFormula:C10H8N4Color and Shape:WhiteMolecular weight:184.208(9)-Methoxy-1,3-dimethyl-12-thioxopyrido[1’,2’:3,4]imidazo[1,2-a]benzimidazol-2-(12H)-one (Mixture of Regioisomers)
CAS:Controlled Product<p>Impurity Omeprazole EP Impurity F+Omeprazole EP Impurity G<br>Stability Sample unstable under MS condition<br>Applications 8(9)-Methoxy-1,3-dimethyl-12-thioxopyrido[1’,2’:3,4]imidazo[1,2-a]benzimidazol-2-(12H)-one(Mixture of Regioisomers) (Omeprazole EP Impurity F+Omeprazole EP Impurity G) is a mixture of regioisomers of Omeprazole Impurity.<br>References Rackur, G., et al.: Biochem. Biophys. Res. Commmun., 128, 477 (1985),<br></p>Formula:C16H13N3O2SColor and Shape:NeatMolecular weight:311.36Rivastigmine N-Oxide (Technical Grade)
CAS:Controlled Product<p>Applications Rivastigmine N-Oxide is an impurity of Rivastigmine (R541000, Tartrate Salt) which 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>Formula:C14H22N2O3Color and Shape:Light Yellow LiquidMolecular weight:266.34(2-Oxopyrrolidin-1-yl)acetic Acid
CAS:<p>Impurity Piracetam Impurity D<br>Applications (2-Oxopyrrolidin-1-yl)acetic acid is a reagent in the preparation of pyrazolopyridines as PDE4B inhibitors.<br>References Mitchell, C. J., et al.: Bioorg. Med. Chem. Lett., 20, 5803 (2010);<br></p>Formula:C6H9NO3Color and Shape:Off-WhiteMolecular weight:143.142-Methyl-4,5-diphenyloxazole
CAS:Purity:95.0%Color and Shape:LiquidMolecular weight:235.28599548339844Albendazole Sulfone-d7
CAS:Controlled Product<p>Applications Albendazole Sulfone-d7 is the isotope labelled metabolite of Albendazole (A511610), an anthelmintic agent.<br>References Dominguez, L., et al.: Farmaco, 50, 697 (1995), De Laurentis, N., et al.: Pharm. Pharmacol. Lett., 6, 2: 51 (1996)<br></p>Formula:C12H8D7N3O4SColor and Shape:NeatMolecular weight:304.37Metronidazole
CAS:<p>Applications Used as an antibacterial in the treatment of rosacea. Antiprotozoal (trichomonas). A potential human carcinogen.<br>References Carballo, M., et al.: J. App. Toxicol., 29, 248 (2009), Leitsch, D., et al.: Mol. Microbiol., 72, 518 (2009), Sanderson, H., et al.: Toxicol. Lett., 187, 84 (2009),<br></p>Formula:C6H9N3O3Color and Shape:White To Off-WhiteMolecular weight:171.15Diethyl Rivastigmine
CAS:Controlled Product<p>Applications An impurity in Rivastigmine (R541000), a cholinesterase inhibitor.<br>References Tse, F., et al.: Pharm. Res., 15, 1614 (1998), Melchiorre, C., et al.: J. Med. Chem., 47, 5945 (2004), Srinivasu, M., et al.: J. Pharm. Biomed. Anal., 37, 57 (2005),<br></p>Formula:C15H24N2O2Color and Shape:NeatMolecular weight:264.3633Bis(4-cyanophenyl)methanol
CAS:Controlled Product<p>Stability Light Sensitive<br>Applications A metabolite of Letrozole.<br>References Koyama, E., et al.: Ther. Drug Monit., 15, 224 (1993), Pfister, C., et al.: J. Pharm. Sci., 83, 520 (1994), Vander H.Y., et al.: J. Pharm. Biomed. Anal., 24, 723 (2001), Cohen, M., et al.: Clin. Cancer Res., 8, 665 (2002),<br></p>Formula:C15H10N2OColor and Shape:NeatMolecular weight:234.25Scopolamine N-Oxide
CAS:<p>Stability Hygroscopic<br>Applications Scopolamine N-Oxide 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>References Shahwar, D., et al.: Turk. J. Chem., 36, 257 (2012); Paula, S., et al.: J. Med. Chem., 47, 133 (2004); Wu, H.L., et al.: J. Chromatograph. A., 802, 107 (1998); Phillipson, J.D., et al.: J. Pharma. Pharmcol., 25, 116 (1973);<br></p>Formula:C17H21NO5Color and Shape:NeatMolecular weight:319.352-(2-Cyclopropyl-6-fluoro-1H-1,3-benzodiazol-1-yl)acetic acid
CAS:Molecular weight:234.22999572753906Rabeprazole
CAS:<p>Rabeprazole (LY307640) is an H+/K+-ATPase inhibitor that inhibits cell proliferation in gastric epithelial cells and can be used in the study of gastric ulcers.</p>Formula:C18H21N3O3SPurity:97.06%Color and Shape:White To Yellowish Crystalline PowderMolecular weight:359.44Omeprazole-d3
CAS:Controlled Product<p>Applications Labelled Omeprazole, 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>Formula:C172H3H16N3O3SColor and Shape:NeatMolecular weight:348.43Modafinil-d10 Carboxylate
CAS:Controlled Product<p>Applications A metabolite of Modafinil, a central nervous system vigilance promoting agent, which possesses neuroprotective properties.<br>References Duteil, J., et al.: Eur. J. Pharmacol., 180, 49 (1990), Wong, Y., et al.: J. Clin. Pharmacol., 317, 30 (1999), Robertson, P., et al.: Drug Disp., 42, 123 (2003)<br></p>Formula:C15H4D10O3SColor and Shape:NeatMolecular weight:284.44-Descarboxamido Rufinamide 4-Methyl Ester
CAS:Controlled Product<p>Applications 4-Descarboxamido Rufinamide 4-Methyl Ester is an impurity in the synthesis of Rufinamide (R701550), an antiepileptic triazole derivative which decreases firing by neurons at sodium channels. Anticonvulsant.<br>References Cheung, W.K., et al.: Pharm. Res., 12, 1878 (1995), Cardot, J.-M., et al.: Biopharm. Drug Dispos., 19, 259 (1998), Palhagen, S., et al.: Epilepsy Res., 43, 115 (2001),<br></p>Formula:C11H9F2N3O2Color and Shape:NeatMolecular weight:253.203-Dechloro-4-chloro Lamotrigine
CAS:Controlled Product<p>Impurity Lamotrigine EP Impurity G<br>Applications 3-Dechloro-4-chloro Lamotrigine (Lamotrigine EP Impurity G) is a potential impurity of Lamotrigine (L173250).<br>References Rees, R., et al.: J. Med. Chem., 15, 859 (1972), McNamara, J., et al.: Nature, 399, A15 (1999),<br></p>Formula:C9H7Cl2N5Color and Shape:NeatMolecular weight:256.09N-(3-(1H-imidazol-1-yl)propyl)-1-(4-fluorophenyl)-2,2-dimethylcyclopropane-1-carboxamide
CAS:Purity:98%Molecular weight:315.39199829101562-((4,5-Diphenyloxazol-2-yl)thio)-N-(1-hydroxypropan-2-yl)acetamide
CAS:Purity:97%Molecular weight:368.45001220703125Metronidazole Acetate
CAS:Controlled Product<p>Applications Metronidazole Acetate is a protected Metronidazole (M338880). Metronidazole Acetate is an imidazole derivative with anti-trichomonas, antifungal and spermicidal activity.<br>References Kumar, L. et al.: ACS Med. Chem. Lett., 3, 83 (2012); Kumar, L. et al.: Eur. J. Med. Chem., 45, 817 (2010)<br></p>Formula:C8H11N3O4Color and Shape:NeatMolecular weight:213.191,2-Dimethyl-1H-benzoimidazol-5-ylamine;dihydrochloride
CAS:Purity:98%Molecular weight:234.1199951171875Tebuconazole
CAS:<p>Applications Tebuconazole is an ergosterol biosynthesis inhibitor present in most pesticide formulations (1,2). Various uptake is observed in plants (3). Drinking water Contaminant Candidate List 3 - CCL 3 as per United States Environmental Protection Agency (EPA). Environmental contaminants; Food contaminants. Useful in cannabis testing kits as a component of pesticide mixes (P698235).<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 1. Grimalt S. et al.: Anal Bioanal Chem. 2015 Apr;407(11):3083-912. Gent, D. et al.: Plant Dis. 2003 May:87(5) p591-5973. Wang, C. et al.: Pest. Biochem. Physiol. 2007 Jan:87(1) p1-8<br></p>Formula:C16H22ClN3OColor and Shape:White To Light YellowMolecular weight:307.82(R)-Oxybutynin Chloride
CAS:Controlled Product<p>Applications The optically avtice 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>Formula:C22H31NO3·ClHColor and Shape:NeatMolecular weight:393.95(R)-(-)-3-(Carbamoylmethyl)-5-methylhexanoic acid
CAS:Controlled Product<p>Applications An impurity of the anti-convulsant (S)-Pregabalin (P704790).<br>References Lin, S. et al.: J. Liq. Chrom. Rel. Technol., 19, 2699 (1996); Sripathi, S. et al.: ARKIVOC, 10, 266 (2010);<br></p>Formula:C9H17NO3Color and Shape:White To Off-WhiteMolecular weight:187.245-Hydroxy Omeprazole (~5% Triethylamine as stabilizer)
CAS:<p>Stability Hygroscopic, Temperature Sensitive<br>Applications 5-Hydroxy Omeprazole is the main metabolite 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>Formula:C17H19N3O4SColor and Shape:NeatMolecular weight:361.421-Benzyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-imidazole
CAS:Purity:98%Molecular weight:284.17001342773443-(2,3-Dichlorobenzamido) Lamotrigine
CAS:<p>Impurity Lamotrigine EP Impurity F/ Lamotrigine Related Compound D<br>Stability Light Sensitive<br>Applications 3-(2,3-Dichlorobenzamido) Lamotrigine (Lamotrigine EP Impurity F) an impurity of the anticonvulsant Lamotrigine (L173250).<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 Emami, J. et al.: J. Pharmac. Biomed. Anal., 40, 999 (2006); Srinivasulu, P. et al.: Chromatographia, 70, 271 (2009);<br></p>Formula:C16H9Cl4N5OColor and Shape:NeatMolecular weight:429.092-(((6-(Difluoromethoxy)-1H-benzo[d]imidazol-2-yl)sulfonyl)methyl)-3,4-dimethoxypyridine 1-oxide
CAS:Purity:95.0%Molecular weight:415.3699951171875Parbendazole
CAS:Controlled Product<p>Applications Parbendazole is a benzimidazole carbamate and a potent inhibitor of microtubule assembly and functions.<br>References Lahon, L.C.. et al.: Ind. J. Pharmacol., 26, 235 (1994); Havercroft, J.C., et al.: J. Cell. Sci., 49, 195 (1981);<br></p>Formula:C13H17N3O2Color and Shape:NeatMolecular weight:247.293-Hydroxy Carbamazepine
CAS:<p>Applications A metabolite of Carbamazepine (C175840).<br>References Park, B., et al.: Biochem. Pharmacol., 36, 581 (1987), Yamazaki, H., et al.: Drug Metab. Dispos., 27, 1260 (1999), Dieckhaus, C., et al.: Chem. Res. Toxicol., 14, 958 (2001),<br></p>Formula:C15H12N2O2Color and Shape:NeatMolecular weight:252.27(R)-3-Boc-4-(Methoxymethylcarbamoyl)-2,2-dimethyloxazolidine
CAS:Purity:95.0%Color and Shape:SolidMolecular weight:288.3439941406255-O-Desmethyl Omeprazole Sulfide
CAS:Controlled ProductFormula:C16H17N3O2SColor and Shape:NeatMolecular weight:315.392-Aminomethyl-7-chloro-2,3-dihydro-5-(2-fluorophenyl)-1H-1,4-benzodiazepine
CAS:Controlled Product<p>Applications An Intermediate for the synthesis of Midazolam.<br>References Walser, A., J. Org. Chem., 43, 936 (1978).<br></p>Formula:C16H15ClFN3Color and Shape:NeatMolecular weight:303.767-Bromo-6-methyl-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-indazole
CAS:Purity:95.0%Molecular weight:341.32400512695312-Chloro-5-(2-phenyl-5-(pyridin-4-yl)-1H-imidazol-4-yl)phenol
CAS:Purity:95.0%Molecular weight:347.79998779296875Tioconazole
CAS:Controlled Product<p>Applications Tioconazole is 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>Formula:C16H13Cl3N2OSColor and Shape:WhiteMolecular weight:387.714-(2-Keto-1-benzimidazolinyl)piperidine
CAS:Formula:C12H15N3OPurity:95.0%Color and Shape:SolidMolecular weight:217.272Rhodium (5% on Alumina)
CAS:Controlled Product<p>Applications Rhodium is a transition metal catalyst used in a multitude of inorganic synthesis.<br>References Alonso, F. et al.: Chem. Rev., 102, 4009 (2002); Widegren, J. et al.: J. Am. Chem. Soc., 125, 10301 (2003); Blomberg, M. et al.: J. Am. Chem. Soc., 113, 424 (1991);<br></p>Formula:RhColor and Shape:NeatMolecular weight:102.91Climbazole-d4
CAS:Controlled ProductFormula:C15D4H13ClN2O2Color and Shape:Off White SolidMolecular weight:296.79Carbimazole
CAS:<p>Applications Carbimazole, a prodrug of Methimazole (M260300), is used in the treatment of hyperthyroidism.<br>References Marchant, B., et al.: J. Clin. Endocrinol. Metab., 45, 1187 (1977), Johnsson, E., et al.: Lancet, 350, 1520 (1997),<br></p>Formula:C7H10N2O2SColor and Shape:NeatMolecular weight:186.23(1R,3S,5S)-3-(2-Hydroxy-2,2-di(thiophen-2-yl)acetoxy)-8,8-dimethyl-8-azabicyclo[3.2.1]oct-6-en-8-ium Bromide
CAS:Controlled Product<p>Impurity Tiotropium bromide EP impurity C<br>Applications (1R,3S,5S)-3-(2-Hydroxy-2,2-di(thiophen-2-yl)acetoxy)-8,8-dimethyl-8-azabicyclo[3.2.1]oct-6-en-8-ium Bromide is an impurity in the synthesis of Tiotropium Bromide (T444850), a muscarinic receptor antagonist. Bronchodilator.<br>References Haddad, E.-B., et al.: Mol. Pharmacol., 45, 899 (1994); Donohue, J. F., et al.: Chest, 122, 47 (2002); Profita, M., et al.: Allergy, 60, 1361 (2005); Dusser, D., et al.: Eur. Respir. J., 27, 547 (2006);<br></p>Formula:C19H22NO3S2·BrColor and Shape:NeatMolecular weight:456.42Oxibendazole
CAS:<p>Applications Anthelmintic.<br>References KarunaKaron, C.S., et al.: J. Parasitol., 66, 929 (1980), Drudge, J.H., et al.: Am. J. Vet. Res., 42, 526 (1981)<br></p>Formula:C12H15N3O3Color and Shape:NeatMolecular weight:249.273,5-Didesamino-3,5-dioxo Lamotrigine
CAS:Controlled Product<p>Impurity Lamotrigine EP Impurity D<br>Applications 3,5-Didesamino-3,5-dioxo Lamotrigine (Lamotrigine EP Impurity D) is an impurity of the anticonvulsant Lamotrigine (L173250).<br>References Hlavac, J. et al.: ARKIVOC, 1, 22 (2003);<br></p>Formula:C9H5Cl2N3O2Color and Shape:NeatMolecular weight:258.06Tert-Butyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-imidazole-1-carboxylate
CAS:Purity:97%Molecular weight:294.16000366210942-Mercapto-4,5,6,7-d4-benzimidazole
CAS:Controlled ProductFormula:C72H4H2N2SColor and Shape:NeatMolecular weight:154.235-(but-1-yn-1-yl)-1-(tetrahydro-2H-pyran-2-yl)-1H-indazole
CAS:Purity:98%Molecular weight:254.332992553710942-(5-METHYL-2-PHENYLOXAZOL-4-YL)ETHYL 4-METHYLBENZENESULFONATE
CAS:Purity:95.0%Molecular weight:357.4200134277344Dihydroxy diketo atorvastatin impurity
CAS:<p>Dihydroxy diketo atorvastatin impurity is a synthetic impurity that is generated by the metabolism of atorvastatin. This drug product is an analytical standard for the determination of purity, and can also be used to develop high purity drugs.</p>Formula:C26H24FNO5Purity:Min. 95%Molecular weight:449.47 g/mol6-(2,3-Dichlorophenyl)-1,2,4-triazine-3,5(2H,4H)-dione
CAS:<p>6-(2,3-Dichlorophenyl)-1,2,4-triazine-3,5(2H,4H)-dione is a chlorinating agent that converts alcohols to alkyl chlorides. It is used for the conversion of diazotizable aromatic compounds to diazo compounds. This compound has been shown to be neuroprotective in animal models and provides protection against glutamate excitotoxicity. 6-(2,3-Dichlorophenyl)-1,2,4-triazine-3,5(2H,4H)-dione also reacts with nitrite ions to form the corresponding nitroso derivatives. These derivatives can cause DNA damage and are mutagenic. 6-(2,3-Dichlorophenyl)-1,2,4-triazine-3,5(2H,4H)-dione has been shown to react with aminoguanidine to produce a chromat</p>Formula:C9H5Cl2N3O2Purity:Min. 95%Color and Shape:PowderMolecular weight:258.06 g/mol1-Benzyl-4-(5,6-dimethoxy-1-oxoindan-2-ylidene)methylpiperidine
CAS:<p>1-Benzyl-4-(5,6-dimethoxy-1-oxoindan-2-ylidene)methylpiperidine is an analytical standard and a drug product. It is a synthetic compound that has been shown to have pharmacological effects similar to those of the analgesic or opioid drugs. 1-Benzyl-4-(5,6-dimethoxy-1-oxoindan-2-ylidene)methylpiperidine can be used as an impurity standard for HPLC analyses as well as metabolic studies. This compound is also known to have potential interactions with other drugs.</p>Formula:C24H27NO3Purity:Min. 98 Area-%Color and Shape:PowderMolecular weight:377.48 g/mol(1S)-1-Phenyl-1,2,3,4-tetrahydroisoquinoline
CAS:<p>(1S)-1-Phenyl-1,2,3,4-tetrahydroisoquinoline is a drug used to treat depression. It is an antidepressant drug that inhibits the reuptake of serotonin and norepinephrine in the brain by blocking their transport into the nerve cells. The drug acts as a weak inhibitor of monoamine oxidase (MAO). It also has an effect on bladder function. This compound is synthesized from 1-phenyl-2,5-dihydrothiazole by way of a sequence of reactions that includes the formation of an amine salt via reaction with phosphorus pentoxide and chloroacetic acid followed by conversion to the chloride with thionyl chloride.</p>Formula:C15H15NPurity:Min. 95%Color and Shape:White PowderMolecular weight:209.29 g/mol5-Methoxy-2-[[(3,5-dimethyl-2-pyridinyl)methyl]sulphinyl]-1H-benzimidazole
CAS:<p>5-Methoxy-2-[[(3,5-dimethyl-2-pyridinyl)methyl]sulphinyl]-1H-benzimidazole is a natural product. It is an impurity in the drug development process and may be present as an analytical marker for impurities. 5-Methoxy-2-[(3,5-dimethylpyridinium)methyl]sulfinyl]-1Hbenzimidazole is used as a pharmacopoeia standard and can be synthesized on request.</p>Formula:C16H17N3O2SPurity:Min. 95%Color and Shape:PowderMolecular weight:315.39 g/mol5,6-Dimethoxy-2-(4-piperidinyl)methyleneindan-1-one (donepezil impurity)
CAS:<p>5,6-Dimethoxy-2-(4-piperidinyl)methyleneindan-1-one (donepezil impurity) is an analytical standard used as a reference in HPLC assays for donepezil. It is also a metabolite of donepezil and has been found to have pharmacological activity similar to that of the parent compound. This impurity is present in donepezil drug products at levels up to 0.5%.</p>Formula:C17H21NO3Purity:Min. 95%Molecular weight:287.35 g/molCarbendazim
CAS:<p>Carbendazim is a fungicide that inhibits the growth of fungi and bacteria. It has been shown to be potent inducers of polymerase chain reaction (PCR) amplification, with a rate constant of 0.0103 per minute. Carbendazim also has a significant effect on electrochemical impedance spectroscopy (EIS). The EIS analysis was used to compare carbendazim-treated cells with untreated cells, which showed that carbendazim causes an increase in the resistance across the cell membrane. This research suggests that carbendazim may be genotoxic, as it increased the amount of DNA damage observed in wild-type strains and altered the optical properties of DNA. Carbendazim is also an effective inhibitor of nitrite ion oxidation and colloidal gold deposition, which has led to its use as a water vapor control agent for plants.</p>Formula:C9H9N3O2Purity:Min. 95%Color and Shape:PowderMolecular weight:191.19 g/mol4-Isobutyl-2-pyrrolidinone
CAS:<p>4-Isobutyl-2-pyrrolidinone is a colorless liquid that belongs to the category of phosphites. It has a high boiling point, which makes it suitable for use in organic solvents and as a heat transfer agent. The thermodynamic properties of 4-Isobutyl-2-pyrrolidinone have been evaluated using the protonation theory. It can be protonated at either the nitrogen or the methyl group, and both forms are present in solution. This means that 4-Isobutyl-2-pyrrolidinone is acidic and can react with other compounds to form salts called lactams. There are two isomers of this compound: cis and trans. Both isomers exist in equilibrium; however, the cis isomer predominates at room temperature. The most common impurities of 4-Isobutyl-2-pyrrolidinone are dehydration products formed during synthesis or</p>Formula:C8H15NOPurity:Min. 95%Color and Shape:White PowderMolecular weight:141.21 g/mol2-[[[4-(3-Methoxypropoxy)-3-methyl-2-pyridinyl]methyl]thio]-1H-benzimidazole
CAS:<p>Rabeprazole is a proton pump inhibitor that is used to treat acid-related disorders such as gastroesophageal reflux disease and peptic ulcers. Rabeprazole inhibits the production of gastric acid by blocking the hydrogen/potassium ATPase that is found in the parietal cells of the stomach. The main mechanism of action for rabeprazole is competitive inhibition of the proton pump, which leads to decreased gastric acid secretion. Rabeprazole can be administered orally or intravenously, with a half-life of about 2 hours. It has been shown to have an effect on human liver cytochrome P450s, but does not affect the activity of recombinant cytochrome P450 3A4 (CYP3A4). In clinical studies, rabeprazole was shown to have no adverse effects on CYP3A4 activity and may even increase it slightly.</p>Formula:C18H21N3O2SPurity:Min. 95%Color and Shape:White PowderMolecular weight:343.44 g/molPantoprazole sodium hydrate - Mixture of impurities D and F
CAS:<p>Pantoprazole sodium hydrate is a custom synthesis that is used as a drug product. The CAS number for this compound is 624742-53-6. This compound has the following impurities: D and F. Pantoprazole sodium hydrate has been shown to be metabolized in vitro by human liver microsomes to its metabolites, including the following: (1) pantoprazol acid, (2) 4-hydroxypantoprazol acid, (3) 4-hydroxyisoxazole acid, and (4) 5-(4-hydroxyphenyl)-2H-1,2-benzoxazin-3(4H)-one. The metabolite 4-hydroxypantoprazol acid has been found to be pharmacologically active in animal models of gastric ulceration and healing.</p>Formula:C17H17F2N3O4SPurity:Min. 95%Color and Shape:Off-white to yellow powder.Molecular weight:397.4 g/molMethyl 2,2-dithienylglycolate
CAS:<p>Intermediate for tiotropium bromide synthesis</p>Formula:C11H10O3S2Purity:Min. 95%Color and Shape:White PowderMolecular weight:254.33 g/molN-Desmethyl galanthamine
CAS:Controlled Product<p>N-Desmethyl galanthamine is a plant alkaloid that is found in the Huperzia serrata plant. It has been shown to have cholinergic activity and calcium binding properties. N-Desmethyl galanthamine inhibits acetylcholinesterase, an enzyme responsible for the breakdown of acetylcholine, which is a neurotransmitter. This inhibition leads to increased levels of acetylcholine, which results in increased neuron stimulation and improved memory function. N-Desmethyl galanthamine also binds to β2 nicotinic receptor sites and blocks the binding of nicotine, leading to decreased nicotine dependence.</p>Formula:C16H19NO3Purity:Min. 95%Molecular weight:273.33 g/molRabeprazole Impurity 2
CAS:<p>Rabeprazole Impurity 2 is a research and development impurity standard that is used for qualitative analysis. It can be custom synthesized to meet specific needs, and it can also be used in drug product synthesis. Rabeprazole Impurity 2 is a high purity synthetic compound that has been pharmacopoeia-qualified. It can also be used as a metabolite or analytical standard, and it has been studied for its metabolism studies with HPLC-MS. Rabeprazole Impurity 2 has CAS No. 1807988-36-8.</p>Formula:C18H19N3O4Purity:Min. 95%Molecular weight:341.36 g/molPantoprazole sulphone
CAS:<p>Pantoprazole sulphone is a proton-pump inhibitor that inhibits the production of stomach acid and protects the esophagus from damage. Pantoprazole sulphone has been shown to be effective in treating heart disease patients and reducing their risk of death. It also has biological properties, including modulating the effects of bosentan, which is used to treat pulmonary arterial hypertension. Pantoprazole sulphone has been shown to be chemically stable and stereoselective, which means it binds more strongly to one site than another. Clinical pharmacology studies have found that pantoprazole sulphone has no effect on abomasal motility or gastric emptying time.</p>Formula:C16H15F2N3O5SPurity:Min. 97 Area-%Color and Shape:PowderMolecular weight:399.37 g/mol6-(2,4-Dichlorophenyl)-1,2,4-triazine-3,5-diamine
CAS:<p>6-(2,4-Dichlorophenyl)-1,2,4-triazine-3,5-diamine is a metabolite that can be found in the urine and blood of humans. It has been shown to have cytotoxic effects on human lymphocytes and erythrocytes. 6-(2,4-Dichlorophenyl)-1,2,4-triazine-3,5-diamine is used as an impurity standard for HPLC analysis and as a reference compound for pharmacopoeia. This chemical is also used in the synthesis of some drugs. 6-(2,4-Dichlorophenyl)-1,2,4-triazine-3,5-diamine is not listed in any pharmacopoeia or natural product database.</p>Formula:C9H7Cl2N5Purity:Min. 95%Color and Shape:White PowderMolecular weight:256.09 g/mol(R)-5-Hydroxymethyl tolterodine
CAS:<p>(R)-5-Hydroxymethyl tolterodine is a prodrug that is metabolized by cytochrome P450 3A4 (CYP3A4) in the liver to its active form, tolterodine. This drug can be used as an alternative for gabapentin in the treatment of detrusor muscle overactivity associated with neurogenic bladder dysfunction. The pharmacokinetic properties of (R)-5-hydroxymethyl tolterodine are similar to those of gabapentin, including the elimination half-life and volume of distribution. However, unlike gabapentin, which has been shown to increase the glomerular filtration rate (GFR) and renal blood flow, there is no evidence that this drug has any effect on GFR or renal blood flow. There is also no evidence that (R)-5-hydroxymethyl tolterodine causes any symptoms that may be attributed to</p>Formula:C22H31NO2Purity:Min. 98 Area-%Color and Shape:Off-White PowderMolecular weight:341.49 g/molLansoprazole N-oxide
CAS:<p>Lansoprazole N-oxide is a prodrug that is converted to lansoprazole sulfone in vivo. Lansoprazole N-oxide is used as a diluent in chromatographic experiments. It has been shown to be more sensitive than the parent compound, lansoprazole, for the diagnosis of reflux oesophagitis. Lansoprazole N-oxide also has a validation wavelength of 240 nm and can be detected by liquid chromatography. The active form of lansoprazole, lansoprazole sulfone, can be detected by gas chromatography mass spectrometry (GCMS).</p>Formula:C16H14F3N3O3SPurity:Min. 95%Color and Shape:White PowderMolecular weight:385.36 g/mol2,3-Dichlorobenzoic acid
CAS:<p>2,3-Dichlorobenzoic acid is an organic compound that belongs to the class of carboxylates. It is used as a drug substance in the treatment of mycobacterial infections. 2,3-Dichlorobenzoic acid has been shown to have antimicrobial activity against Mycobacterium tuberculosis and other mycobacteria. The sensitivity index for this compound was determined using a chromatographic method with human erythrocytes as the test organism. 2,3-Dichlorobenzoic acid displays its antibacterial activity by inhibiting protein synthesis and cell division. This drug also forms crystalline solids that are soluble in organic solvents such as chloroform or benzene.</p>Formula:C7H4Cl2O2Purity:Min. 95%Color and Shape:PowderMolecular weight:191.01 g/mol5-Methoxy-2-[[(4-Chloro-3,5-dimethyl-2-pyridinyl)methyl]sulfinyl]-5-methoxy-1H-benzimidazole
CAS:<p>5-Methoxy-2-[(4-chloro-3,5-dimethyl-2-pyridinyl)methyl]sulfinyl]-5-methoxy-1H benzimidazole is a synthetic drug product. It has been used as a positive control in metabolism studies and as an impurity standard. 5-Methoxy 2-[(4-chloro 3,5 dimethyl 2 pyridinyl)methyl]sulfinyl]-5 methoxy 1H benzimidazole is also a metabolite of the active pharmaceutical ingredient (API) which is used to develop drugs. This chemical is synthesized by custom synthesis and can be obtained at high purity levels. The metabolite of this compound is 5 methoxy 2-[(4 chloro 3,5 dimethyl 2 pyridinyl)methyl]sulfonyl]-5 methoxy 1H benzimidazole.</p>Formula:C16H16ClN3O2SPurity:Min. 95%Color and Shape:PowderMolecular weight:349.84 g/mol3-Amino-6-(2,3-dichlorophenyl)-1,2,4-triazin-5(4H)-one
CAS:<p>3-Amino-6-(2,3-dichlorophenyl)-1,2,4-triazin-5(4H)-one is a triazine derivative that is used as an analytical reagent and intermediate. It has been used as a wastewater analysis method to measure the concentration of carbamazepine. 3-Amino-6-(2,3-dichlorophenyl)-1,2,4-triazin-5(4H)-one has also been shown to be useful in developing analytical methods for clinical trials. 3DCTKP has also been used to test the matrix effect of carbamazepine by analyzing it in different matrices such as water and human plasma.</p>Formula:C9H6Cl2N4OPurity:Min. 95 Area-%Color and Shape:PowderMolecular weight:257.08 g/mol5-Methoxy-2-[[(4-methoxy-3,5-dimethyl-2-pyridinyl)methyl]thio]-1H-benzimidazole
CAS:<p>Omeprazole is a drug that belongs to the class of benzimidazole compounds. It is an inhibitor of gastric acid secretion in the stomach, reducing the production of hydrochloric acid and pepsin. Omeprazole has been shown to have greater chemical stability than other proton pump inhibitors (PPIs), with a higher solubility in water and a longer shelf life. Omeprazole also has anti-inflammatory properties, which may be due to its inhibition of prostaglandin synthesis. Omeprazole also exhibits pharmacokinetic properties that are different from other PPIs. Omeprazole is rapidly absorbed following oral administration and has a high bioavailability, which can be attributed to its hydroxyl group. This hydroxyl group allows for esomeprazole (a prodrug) to be formed by hydrolysis in the gut or liver, increasing omeprazole's absorption and bioavailability.</p>Formula:C17H19N3O2SPurity:Min. 95%Color and Shape:PowderMolecular weight:329.42 g/mol



