Heterociclos com Oxigénio (O)

<p>Applications 5-Formylfuran-2-boronic Acid Neopentyl Glycol Ester is a useful reagent in lapatinib synthesis.<br>References Radl, S., et al.: PCT Int. Appl. (2014), WO 2014059956 A1<br></p>

<p>Applications (2S)-2-​Ethynyltetrahydro-​furan is a heterocyclic chemical reagent used in organic synthesis.<br></p>

<p>Applications N-(furan-3-ylmethyl)cyclohexanamine (cas# 462068-58-2) is a useful research chemical.<br></p>

<p>Applications Intermediate used to produce a variety of pharmaceutical agents, such as analgesic compounds and retinoic acid receptor (RAR) antagonists.<br>References Caldwell, J.; et al.: Bioorg. Med. Chem. Lett., 17, 2281 (2007), Tashiro, T., et al.: Biosci., Biotechnol., Biochem., 72, 2398 (2008),<br></p>

<p>Applications 2,3:5,6-Di-O-isopropylidene-alpha-D-mannofuranose (cas# 14131-84-1) is a useful research chemical.<br></p>

<p>Applications 2-((Methyldisulfanyl)methyl)tetrahydrofuran is a useful compound in organic chemistry.<br></p>

<p>Applications Used in the preparation of antifungal agents.<br>References Del Poeta, M. et al.; Antimicrob. Agents Ch., 42, 2495 (1998)<br></p>

<p>Applications (2S,3S,4R,5R)-2-(6-Amino-9H-purin-9-yl)-5-(((3-aminophenyl)thio)methyl)tetrahydrofuran-3,4-diol is an enantiomer of (2R,3R,4S,5S)-2-(6-Amino-9H-purin-9-yl)-5-(((3-aminophenyl)thio)methyl)tetrahydrofuran-3,4-diol (A577286), which an intermediate used in the synthesis of S-adenosylhomocysteine analogs with biological activities.<br>References Lawrence, F., et al.: Biochem. S-Adenosylmethionine Relat. Compd., Proc. Conf., 637 (1982); Shire, D., et al.: Nucleosides &amp; Nucleotides, 2, 21 (1983)<br></p>

<p>Applications 2,3-Dihydro-2,2,4,6,7-pentamethylbenzofuran is an 2,3-Dihydrobenzofuran derivative which is an important intermediate of medicines and agricultural chemicals.<br>References Kim, H. J., et al.: Hwahak Konghak, 43, 662-667 (2005)<br></p>

<p>Stability Air Sensitive, Unstable in DMSO<br>Applications 2,2-DIMETHYL-2,3-DIHYDRO-1-BENZOFURAN-5-THIOL (cas# 1248920-72-0) is a useful research chemical.<br></p>

<p>Applications 2,5-Diacetoxy-2,5-dihydrofuran is used as a reagent to synthesize Mexicanin H, a biologically active sesquiterpene lactone that exhibits antiparasitic activity against Trypanosoma cruzi (a parasite that causes Chagas disease)<br>References Jimenez-Ortiz, V., et al.: Parasitology, 91, 170 (2005); Romo, J., et al.: Tetrahedron Lett., No vol. given, 1029 (1966)<br></p>

<p>Impurity Darifenacin 5 Carboxymethyl Impurity/ Darifenacin Bromo Impurity<br>Applications 5-(2-Bromoethyl)-2,3-dihydrobenzofuran (cas# 127264-14-6) is a compound useful in organic synthesis.<br></p>

<p>Stability Hygroscopic<br>Applications Tetrahydrofuran-2,5-dicarboxylic Acid (cas# 2240-81-5) is a compound useful in organic synthesis.<br></p>

<p>Applications 2,5-Dihydrofuran is used in the synthesis of Sch 38516 aglycon (fluvirucin B1) an influenza A antibiotic.<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 Tomita, K. et al.: J. Antibiot., 44, 940 (1991); Houri, A. et al.: J. Am. Chem. Soc., 117, 2943 (1995);<br></p>

<p>Applications 2-Acetylfuran is a widely used reagent in manufacturing pharmaceuticals and aroma compounds.<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 Bertero, M., et al.: Fuel, 95, 263 (2012); Dang, Q., et al.: J. Medn. Chem., 54, 153 (2011); Candu, N., et al.: Topics. Catalysis., 52, 571 (2009);<br></p>

<p>Applications (5-Formylfuran-2-yl)boronic Acid is a reagent used in Suzuki cross-couplings with deactivated aryl bromides and activated aryl chlorides.<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 Trinh, T. N., et al.: Org. Biomol. Chem., 12, 9562-9571 (2014);<br></p>

<p>Applications Tetrahydro-3-furanmethanamine is an intermediate in the synthesis of Dinoteturan (D482100), a neonicotinoid insecticide.<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></p>

<p>Applications cis-2,5-Dimethyltetrahydrofuran is a byproduct of the catalytic conversion of sugars and polyols to biomass-derived carbohydrates. Dihydrofuranyl derivative.<br>References West, R. et al.: Catalysis Today., 147, 115 (2009);<br></p>

<p>Applications 2-(Ethoxymethyl)furan (cas# 6270-56-0) is a useful research chemical.<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></p>

<p>Applications (S)-4,4,7A-TRIMETHYL-5,6,7,7A-TETRAHYDROBENZOFURAN-2(4H)-ONE (cas# 15356-74-8) is a useful research chemical.<br></p>

<p>Applications 2-Carboxyfuran-5-boronic acid, pinacol ester<br></p>

<p>Applications Methyl 2-Deoxy-D-erythropentafuranose 5-(2,2-Dimethylpropanoate) is an intermediate for the synthesis of 2-Deoxy-D-threopentofuranoside.<br></p>

<p>Applications 3-Furanmethanol (cas# 4412-91-3) is a useful research chemical.<br></p>

<p>Applications 2,5-Furandicarboxylic Acid Diethyl Ester (cas# 53662-83-2) is a compound useful in organic synthesis.<br></p>

<p>Applications 2-(5-formylfuran-2-yl)benzoic Acid (cas# 88460-72-4) is a useful research chemical.<br></p>

<p>Applications Dibenzo[b,d]furan-2-sulfonic acid (cas# 83863-63-2) is a useful research chemical.<br></p>

<p>Applications 5-Formylfuran-2-boronic Acid Pinacol Ester could be useful for the diastereoselective synthesis of cyclic peptide macrocycles via Petasis borono-Mannich reaction<br>References Yamaguchi, A., et al.: Chem. Commun. (Cambridge, U. K.), 55, 10567 (2019)<br></p>

<p>Applications 5-hydroxy-2,5-dihydrofuran-2-one (cas# 14032-66-7) is a useful research chemical.<br></p>

<p>Applications 4,5-Dimethyl-3-hydroxy-2(5H)-furanone is a fragrant compound that is a key indicator of maple syrup urine disease, a disorder affecting newborn children that is the result of its inability to properly metabolize Valine (V094205), Leucine (L330110) and Isoleucine (I820175). 4,5-Dimethyl-3-hydroxy-2(5H)-furanone is naturally found in fenugreek seeds, and is an odourant present in sherry wines.<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 Blank, I., et al.: Prog. Flav. Prec. Stud., No vol. given, 103 (1993); Guerra, P. &amp; Yaylayan, V.: J. Agr. Food Chem., 59, 4699 (2011); Mackenzie, D. &amp; Woolf, L.: Brit. Med. J., 1, 90 (1959); Podebrad, F., et al.: J. Inh. Metab. Dis., 22, 107 (1999)<br></p>

<p>Applications 3-{4-[(furan-2-ylmethyl)sulfamoyl]phenyl}prop-2-enoic acid (cas# 391229-93-9) is a useful research chemical.<br></p>

<p>Applications 5-(Aminomethyl)furan-2-carboxylic Acid Hydrochloride is a useful reagent in the preparation of novel heteroaromatic substrates of GABA aminotransferase.<br>References Hawker, D. D., et al.: Bioorg. Med. Chem., 20, 5763 (2012)<br></p>

<p>Applications 6-Chloro-1-benzofuran-2-carboxylic Acid is used to prepare cis-diaminocyclohexane derivatives as factor Xa inhibitors. It is also used to synthesize tachykinin NK2 receptor antagonists.<br>References Bioorg. Med. Chem., 17, 8206 (2009); Gensini, M., et al.: ChemMedChem, 5, 65 (2010)<br></p>

<p>Applications 2-((Tetrahydrofuran-2-yl)methoxy)phenoxy)tetrahydro-2H-pyran is an intermediate used in the synthesis of Bufetolol (B689435), a β-adrenergic blocking agent and it inhibits the activation of adenyl cyclase.<br>References Ikegami, K., and Imamura, H.: Yakugaku Zasshi 96, 614 (1976); Yamaji, A., et al.: Yakugaku Zasshi 105, 1179 (1985)<br></p>

<p>Applications 5-HYDROXY-4-PROPYL-5H-FURAN-2-ONE (cas# 78920-10-2) is a useful research chemical.<br></p>

<p>Stability Moisture Sensitive<br>Applications 4,7-dimethyl-1,3-dihydro-2-benzofuran-1,3-dione (cas# 5463-50-3) is a useful research chemical.<br></p>

<p>Applications 2,3-dihydro-2,2-dimethylbenzofuran-5-carboxylic acid (cas# 123656-34-8) is a useful research chemical.<br></p>

<p>Stability Unstable in Aqueous Solution<br>Applications (±)-Dihydro-3-hydroxy-4,4-dimethyl-2(3H)-furanone is a volatile organic compound used in the silylation of alcohols,<br>References D'Sa, B.A. et al.: J. Org. Chem., 62, 5057 (1997);<br></p>

<p>Applications 2-(oxiran-2-yl)furan (cas# 2745-17-7) is a useful research chemical.<br></p>

<p>Applications N-Dimethyl-(furan-3-ylmethyl)carbamothioyl)methanethioamide is an intermediate used in the synthesis of 3-((Furan-2-ylmethyl)imino]-N,N-dimethyl-3H-1,2,4-dithiazol-5-amine Hydrobromide (F864125), which is an insect chemosterilant and an agrochemical.<br></p>

<p>Applications Ethyl 5-amino-1-benzofuran-2-carboxylate is used as an synthetic intermediate in the preparation of indolebutylpiperazines, a class of dual 5-HT1A receptor agonists and serotonin reuptake inhibitors. Ethyl 5-amino-1-benzofuran-2-carboxylate was also used as a potential radiolabelled analog for melanoma imaging and targeted radiotherapy.<br>References Chezal, J.M., et al.: J. Medn. Chem., 51, 3133 (2008); Heinrich, T., et al.: J. Medn. Chem., 47, 4684 (2004);<br></p>

<p>Applications Furan-2-boronic acid<br></p>

<p>Applications 2,5-Bis(aminomethyl)tetrahydrofuran<br></p>

<p>Applications N-​(3-​Dibenzofuranyl)-​5-​nitro-2-​furancarboxamide is synthesized from Dibenzo[b,d]furan-3-amine (D418205), which is a building block used as a reactant in the preparation of dibenzofuryl(phosphonomethyl)alanines as endothelin converting enzyme inhibitors.<br>References De Lombaert, S., et al.: J. Med. Chem., 43, 488 (2000);<br></p>

<p>Applications 5-Fluorobenzofuran-3-one<br></p>

<p>Applications 5-Bromo-7-ethyl-2-formyl-benzofuran (cas# 137206-73-6) is a compound useful in organic synthesis.<br></p>

<p>Applications Methyl 5-bromofuran-2-carboxylate<br></p>

<p>Applications N-(2-acetyl-1-benzofuran-3-yl)-2-chloroacetamide (cas# 855715-46-7) is a useful research chemical.<br></p>

<p>Applications 7-Bromo-1-benzofuran<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></p>

<p>Stability Moisture Sensitive<br>Applications (3R,4R)-Dihydro-3,4-bis(phenylmethoxy)-2,5-furandione is an intermediate in the synthesis of N-alkenylsuccinimide derivatives.<br>References Ohwada, J., et al.: Bull. Chem. Soc. Jap., 63, 287 (1990);<br></p>

<p>Applications 5-[2-(Trifluoromethoxy)phenyl]-2-furancarboxylic Acid is a reactant used in the preparation of (phenyl)-N-[(mercapto)(pyrrolyl)triazolyl]furancarboxamide and (phenoxy)-N-[(mercapto)(pyrrolyl)triazolyl]acetamide derivatives as herbicides.<br>References Xue, S., Lu, C.: Youji Huaxue, 28, 1083 (2008)<br></p>

<p>Applications Benzofuran-3(2H)-one is a useful research chemical, an intermediate used in the catalytic asymmetric synthesis of chiral benzofuranones.<br>References Li, Y., et al.: Adv. Synth. Catal., 356, 1172 (2014); Huang, Z., et al.: Org. Lett., 19, 3524 (2017)<br></p>

<p>Applications 5-Nitro-1-benzofuran is a chemical reagent used in the synthesis of internal alkynes. Also used in the preparation of anti-oxidants quinolines.<br>References Lu, L. et al.: Eur. J. Org. Chem., 2013, 1644 (2013); Kuzmin, V. et al.: Russ. Chem. Bull., 57, 2405 (2008);<br></p>

<p>Applications 5-[3-(Trifluoromethoxy)phenyl-2-Furancarboxylic Acid is the structural analogue of 5-[2-(Trifluoromethoxy)phenyl]-2-furancarboxylic Acid (T790925), a reactant used in the preparation of (phenyl)-N-[(mercapto)(pyrrolyl)triazolyl]furancarboxamide and (phenoxy)-N-[(mercapto)(pyrrolyl)triazolyl]acetamide derivatives as herbicides.<br>References Xue, S., Lu, C.: Youji Huaxue, 28, 1083 (2008)<br></p>

<p>Applications furan-2,5-dicarbohydrazide (cas# 26095-97-6) is a useful research chemical.<br></p>

<p>2-(Benzofuran-2-yl)acetic acid is a glp-1 analogue that has been shown to inhibit fatty acid synthesis in the test tube. It has also shown an inhibitory effect on cardiac arrhythmia and chloride ion channel activity, which may be due to the dipole nature of its structure. 2-(Benzofuran-2-yl)acetic acid is not active against microbial infections. The chemical compound is a tautomer of 2-[(benzofuran-2-yl)amino]acetic acid.</p>

<p>2,3-Dihydro-1,4-dithiino[2,3-c]furan-5,7-dione is a coordination polymer that contains both an anhydride and a hydroxide group. It has been shown to form a coordination polymer with lithium hydroxide as the counterion. The topological spaces of the polymer are not limited by the size of the monomer unit. This coordination polymer has been shown to form through reaction with lithium hydroxide in water at room temperature.</p>

<p>2,5-Dibromofuran is a synthetic chemical that is synthesized from acetonitrile and palladium-catalyzed cross-coupling reaction. It can be obtained by the reaction of sodium in anhydrous form with bromine and subsequent evaporation to dryness. 2,5-Dibromofuran has been shown to reversibly react with chloride at room temperature for one hour, which can be attributed to its electron withdrawing properties. The FTIR spectra of 2,5-dibromofuran show bands corresponding to carbonyl and hydroxyl groups. This chemical has been used in synthesis methods involving surfactants and anhydrous sodium chloride as well as uv irradiation.</p>

<p>2-Bromofuran is a metal carbonyl and a pyrazole ring. It has been shown to bind to the CB2 receptor and may have some activity on the nervous system. 2-Bromofuran has been shown to be effective in treating chronic kidney disease and polycystic ovarian syndrome with acetylcholine. The electrochemical data for this molecule has shown that it can form hydrogen bonds when combined with cholinergic molecules.</p>