Hétérocycles azotés (N)

Impurity Droperidol Impurity 4
Applications 4-(2-Nitroanilino)pyridine can be used to increase the yield of 4-(2-Aminoanilino)pyridine (A583160) dihydrochloride by hydrogenation in the presence of a Ni-Cr catalyst. Droperidol Impurity 4.
References Avots, A., et al.: U.S.S.R., SU 1318592 A1 19870623

Applications 4-Nitro-1H-imidazole-1-ethanol

Applications 1-(4-Nitrophenyl)-2-piperidinone is used in the synthesis of inhibitors of blood coagulation factor Xa.
References Pinto, D., et al.: J. Med. Chem., 50, 5339 (2007); Xing, J., et al.: Eur. J. Med. Chem., 95, 388 (2015)

Applications 2,4-Dichloropyrimidine (cas# 3934-20-1) is a compound useful in organic synthesis.

Applications O-(Benzotriazol-1-yl)-N,N,N’,N’-tetramethyluronium Tetrafluoroborate is used in the synthesis of tetrapeptoid analogues of the antiprotocoal compound Apicidin (A726300). Also used in the synthesis of acid based t-antigen glycodendrimers.
References Murray, P. et al.: Bioorg. Med. Chem. Lett., 11, 773 (2001); Roy, R. et al.: J. Am. Chem. Soc., 123, 1809 (2001);

Applications 1,3-Dibromo-5,5-dimethyl-2,4-imidazolidinedione is a useful synthetic intermediate in aromatic bromination of alkoxybenzoic acids and in bromofluorination of alkenes.
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 Olah, G., et al.: Synthesis, 7, 692 (1993); Auerbach, J., et al.: Tetrahedr. Lett., 34, 931 (1993)

Stability Hygroscopic
Applications 1-Ethyl-5-hydroxy-2-pyrrolidinone is an important organic solvent used in varnishing. Industrial solvent.
References Koch, H. et al. Arch. Toxicol., 88, 893 (2014); Koslitz, S. et al.: Toxicol. Lett., 231, 142 (2014);

Applications 2-Nitrosopyridine is a useful reactant in organic synthesis.
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 Li, Xing, et al.: J. of Org. Chem., 84(7), 4402-4412 (2019);Zhang, Jingchuan, et al.: Chem. - A Euro. J., 24(17), 4289-4293 (2018)

Applications 2,4,6-Tris(pentadecafluoroheptyl)-1,3,5-triazine (CAS# 21674-38-4) is an s-triazine derivative (T773008) and is used as a reference standard in mass spectroscopy for m/z ratios between 600-1600.
References Aczel, T.; et al.: Anal. Chem., 40, 1917 (1968);

Applications 5-Nitro-1H-imidazole-1-ethanol (cas# 5006-68-8) is a compound useful in organic synthesis.

Applications A free radical scavenger; may be used for prophylaxis and treatment of IRI.
References Flather, M., et al.: Lancet, 355, 1575 (2000), Sasso, F., et al.: Metabolism, 52, 675 (2003), Kass, D., et al.: Circ. Res., 94, 1533 (2004), Murdoch, C., et al.: Cardiovasc Res., 71, 208 (2006),

Applications 1,3,5-trimethyl-1H-pyrazole-4-carboxylic acid (cas# 1125-29-7) is a useful research chemical.

Applications Methyl 5-Ethyl-2-pyridine-carboxylate (cas# 13509-14-3) is a compound useful in organic synthesis.
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 Urazole (cas# 3232-84-6) is a useful research chemical.

Applications Labelled Benzotriazole. BT is an anticorrosive agent well known for its use in aircraft deicing and antifreeze fluids but also used in dishwasher detergents. Benzotriazole is antiestrogenic in vitro but not in vivo.Isotopic purity: 97% d4, 3% d3.
References Rollinson, G., et al.: Biotechnol. Lett., 8, 303 (1986), Cancilla, D., et al.: Environ. Toxicol. Chem., 16, 430 (1997), Beresford, N., et al.: Toxicol. Appl. Pharmacol., 162, 22 (2000), Cornell, J., et al.: Environ. Toxicol. Chem., 19, 1465 (2000), Giger, W., et al.: Environ. Sci. Technol., 40, 7186 (2006),

Applications 1-(1-phenylpropan-2-yl)-1H-pyrrole-2-carboxylic acid (cas# 1432680-68-6) is a useful research chemical.

Applications 2-(5-tert-Butyl-2-hydroxyphenyl)benzotriazole is a chemical reagent used in the synthesis of UV stabilizers in environmental waters.Used in the detection of UV light filters in sediment and sewage.
References Liu, R. et al.: Talanta., 120, 158 (2014); Zhang, Z. et al.: Env. Sci. Tech., 45, 3909 (2011);

Applications 5-Methyl-3,4-diphenylisoxazole is a reagent for the preparation of valdecoxib and valdecoxib analogues.
References Di Nunno, L., et al.: J. Med. Chem., 47, 4881 (2004); Reddy, A. R., et al.: Synth. Commun., 42, 639 (2012); Huang, Y., et al.: Zhongguo Xiandai Yingyong, 26, 456 (2009)

Applications N-(chloroacetoxy)succinimide is a N-hydroxysuccinimide ester of a simple carboxylic acid. N-(chloroacetoxy)succinimide is used in the preparation of organometallic complexes and other synthetic probes for the labeling of proteins.
References Salmain, M. et al.: Bioconj. Chem., 4, 425 (1993); Nonaka, H. et al.: J. AM. Chem. Soc., 129, 15777 (2007);

Impurity Cetirizine EP Impurity G Dihydrochloride
Applications 4-(p-Chloro-α-phenylbenzyl)-1-piperazineethanol is used in the synthesis of antifungal triazole and imidazole derivatives. Impurity of an intermediate in the formation of Cetrizine.
References Rezaei, Z. et al.: Archiv. Pharm., 344, 658 (2011);

Applications 1-(oxan-4-yl)-1H-1,2,3-triazole-4-carboxylic acid (cas# 1487610-80-9) is a useful research chemical.

Applications 1-(3-Chloropropyl)-1,3-dihydrobenzimidazol-2-one is a benzimidazole derivative used in the preparation of neuroleptic and antiallergic agents.
References Strupczewski, J. et al.: J. Med. Chem., 28, 761 (1985); Freter, K. et al.: Arzneim.-Forsch., 35, 272 (1985);

Applications A nitro substituted piperazine.

Applications 2,6-diethylpyrazine (cas# 13067-27-1) is a useful research chemical.

Stability Air Sensitive, Light Sensitive
Applications 3,4-DIETHYLPYRROLE (cas# 16200-52-5) is a useful research chemical.

Applications 3-Ethyl-2,4-dimethyl-1H-pyrrole is a important diagnostic compound for pyrrole disorder or pyroluria, an abnormality in biochemistry resulting in overproduction of pyrrole molecules and resulting in improper hemoglobin synthesis.
References Walsh, W.J., et al.: Physiol. Behav., 82, 835 (2004); Inrvine, D.G., et al.: Clin. Chem., 24, 2069 (1978);

Applications 3-Cyanopyridine is used in the preparation of arylthiazolines and arylimidazolines via dibromodimethylhydantoin-catalyzed condensation of aryl nitriles with ethylene diamine or aminoethanethiol.
References Hojati, S. F., et al.: Can. J. Chem., 88, 135 (2010);

Applications Used for preparation of thieno-tetrahydropyridines useful as class III antiarrhythmic agents.
References Bahekar, R., et al.: Bioorg. Med. Chem., 15, 5950 (2007), Hayakawa, M., et al.: Bioorg. Med. Chem. Lett., 17, 2438 (2007),

Applications 5-Aminomethyl-2-chloropyridine is a reagent that is used in the synthesis of macamides and analogs that have FAAH (fatty acid amide hydrolase) inhibitory 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 Wu, H., et al.: Bioorg. Med. Chem., 21, 5188 (2013);

Impurity Azathioprine EP Impurity C
Applications 5-Chloro-1-methyl-4-nitroimidazole (cas# 4897-25-0) is a compound useful in organic synthesis.

Applications 3-Chloro-6-phenylpyridazine (cas# 20375-65-9) is a useful research chemical.

Applications 2-Amino-3,5-dibromopyrazine is used in the preparation of conjugated polymers for neurotoxin detection. 2-Amino-3,5-dibromopyrazine is an intermediate in the preparation of rho kinase (ROCK) inhibitors.
References Thomas, J. et al.: Polym. Prepr., 46, 1211 (2005); Henderson, A.J. et al.: Bioorg. Med. Chem. Lett., 20, 1137 (2010);

Applications 2,​3-​Cyclopentenopyridine is used as reactant/reagent for ruthenium-mediated dual catalytic reactions of isoquinoline via C-H activation and dearomatization for isoquinolone.
References Wang, T., et al.: Adv. Synth. Catal., 358, 2751-2758 (2016)

Applications 5-Bromo-2,4-diamino-6-hydroxypyrimidine (cas# 6312-72-7) is a compound useful in organic synthesis.

Applications 1-(4-Hydroxyphenyl)piperazine

Applications 4-Oxo-6-(2-oxo-5-vinylpyrrolidin-1-yl)hexanoic Acid is derived from Ethyl Succinoyl Chloride (E818230), which is used in the synthesis of bivalent ligands for D2/D3 dopamine receptors. Also used in the preparation of antimicrobial pyrrolo-isoquinolinones. Vigabatrin Impurity 2
References Gogoi, S. et al.: ACS Med. Chem. Lett., 3, 991 (2012)

Impurity Rabeprazole EP Impurity F
Applications An antidegradant, protecting rubber from oxidation. An intermediate in the synthesis of Rabeprazole (R070500)
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 Beheshti, A., et al.: J. Food Sci., 75, C135 (2010), Rohrig, U., et al.: J. Med. Chem., 53, 1172 (2010),

Applications 2-Butyl-5-chloro-1H-imidazole (cas# 158365-99-2) is a compound useful in organic synthesis.
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 Pyridin-3-yl dimethylcarbamate (cas# 51581-32-9) is a useful research chemical.

Applications 2-ethoxy-3-ethylpyrazine (cas# 35243-43-7) is a useful research chemical.

Applications N-Boc-piperazine (cas# 57260-71-6) is a compound useful in organic synthesis.

Applications 5-Chloro-2-pyridinamine is a useful synthetic intermediate. It can be used to synthesize zopiclone (Z700500) which is a cyclopyrrolone member of a family of non-benzodiazepine GABAA receptor agonists.
References Noble, S., et al.: Drugs, 55, 277 (1998), Musch, B., et al.: Int. J. Clin. Psychopharmacol., 5, 147 (1990),

Applications 1-BUTYLPYRROLIDIN-2-ONE (cas# 3470-98-2) is a useful research chemical.

Applications 2-(4,6-Diphenyl-1,3,5-triazine-2-yl)-5-[(hexyl)oxy]phenol is used as a light stabilizer/UV absorber for polyethylene phthalate polymers intended for use in contact with food.
References Food and Drug Administration, HHS: Fed. Reg., 63, 43874 (1998); Fechine, G.J.M. et al.: Polym. Degrad. Stab., 75, 153 (2002);

Applications 5-Bromo-2-hydroxypyrimidine (cas# 38353-06-9) is a compound useful in organic synthesis.

Applications 1-Hydroxy-7-azabenzotriazole (cas# 39968-33-7) is a compound useful in organic synthesis.
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 3-Chloropyridazine (cas# 1120-95-2) is a useful research chemical.

Applications 4-Iodopyrazole is used in the synthesis of (pyrazolyl)oxobenzocycloheptapyridinyl acetamides that act as inhibitors of c-Met.
References Northrup, A. et al.: J. Med. Chem., 56, 2294 (2013);

Applications 4,5,6,7-Tetrahydro-5-(triphenylmethyl)thieno[3,2-c]pyridine (cas# 109904-25-8) is a compound useful in organic synthesis.

Applications 4-Aminopiperidine is a useful reactant in organic synthesis.
References Park, Sun Jun, et al.: Bioorg. & Med. Chem. Let., 27(18), 4399-4404 (2017);Le Manach, Claire, et al.: J. of Med. Chem., 59(21), 9890-9905 (2016)