Heterociclos com Oxigénio (O)

<p>3H-Spiro[2-benzofuran-1,4'-piperidine] is a ligand with affinity for melanocortin receptors. It has been shown to bind with low affinity to the melanocortin receptor and act as an agonist. 3H-Spiro[2-benzofuran-1,4'-piperidine] has high affinity for benzene, which may be due to its ring system. This ligand also has a penetrable structure that allows it to bind to piperidine binding sites.</p>

<p>5-Chlorofuran-2-carboxylic acid is an unlabeled compound that has been found in the chloroacetate fraction of a crude extract of leaves from the plant Garcinia hombroniana. The compound was evaluated for its potential as a bioactive molecule using acetylation, which led to the formation of 5-chlorofuran-2-carboxylic acid methyl ester. This compound was then analysed for its chemical properties, including sequences and parameters. 5-Chlorofuran-2-carboxylic acid methyl ester had no effects on the growth rate of Escherichia coli, but did inhibit the activity of some enzymes involved in DNA replication and repair. Furan, an anion found in 5-chlorofuran-2-carboxylic acid methyl ester, is also present in many other compounds such as 2,4,6 trichlorophenol and 2,5 dichlorophenol</p>

<p>3,4-Dichlorophenylmagnesium bromide - 0.5M solution in tetrahydrofuran is a chemical reagent that is used to produce methyl compounds. It is often used in the production of chlorinated compounds by substitution of chlorine atoms for hydrogen atoms on the carbon chain. 3,4-Dichlorophenylmagnesium bromide - 0.5M solution in tetrahydrofuran has a molecular structure that includes an electronegative chloro group and a titanium ligand. Acid catalysts are often used with this chemical to promote the reaction between the magnesium and halide ions, which produces methylation products. This may be done through x-ray analysis to determine the progress of the reaction.</p>

<p>Please enquire for more information about 2-Amino-1-(2,3-dihydro-benzofuran-5-yl)-ethanol including the price, delivery time and more detailed product information at the technical inquiry form on this page</p>

<p>6-Chloro-benzofuran-3-one is an organic compound that is used in the synthesis of other chemical compounds. It is a useful scaffold for the construction of complex molecules and may be used as a reagent or reaction component in organic chemistry. This product has CAS number 3260-78-4, and is also known as 6-chlorobenzofuranone.</p>

<p>Please enquire for more information about Methyl-(tetrahydro-furan-3-yl)-amine including the price, delivery time and more detailed product information at the technical inquiry form on this page</p>

<p>3a-Methyl-5,6,7,7a-tetrahydro-4H-isobenzofuran-1,3-dione (MBF) is a reactive epoxy that can be used as a sealant. It has been shown to react with fatty acids and form epoxy esters. MBF also reacts with anhydrides to form polyesters. MBF has also been shown to be a potent inducer of cationic polymerization by reacting with hydroxyl groups on polymers. This reaction is reversible and the methylene groups are cleaved from the polymers to form new bonds with MBF. The resultant product is a cationic polymer that contains the hydroxyl group in place of the methylene group.</p>

<p>2-Methylfuran is a compound that has been used as a catalyst in the synthesis of 2-methylpentane. The presence of nitrogen atoms in the molecule gives it some synergic effect with other catalysts, such as palladium and nickel. 2-Methylfuran can be detected at sensitivities of 10 parts per billion. A kinetic energy of ˜400 kJ/mole and a hydroxyl group give this compound the ability to react with laminar tissue culture cells. 2-Methylfuran is also a solid catalyst for methyl ethyl ketones, which are used in the production of solvents, plastics, and pharmaceuticals. Its transport properties are similar to those of isooctane, making it useful for studies on gas chromatography analysis.</p>

<p>5-hydroxymethylfurfural (5-hmf) is an organic compound that is produced when a carbohydrate or sugar undergoes oxidation. It is used as an additive in animal feed and as an industrial chemical. 5-hmf is a solid catalyst that can be used at high temperatures, making it suitable for use in the production of 2,6-dihydroxybenzoic acid. The reaction mechanism of 5-hmf involves the dehydration of furfural to form 5-hydroxymethylfurfural. This process occurs when a molecule of water reacts with furfural to produce two molecules of 5-hmf. The reaction may be accelerated by introducing heat, which breaks down the hydrogen bonds between the molecules of furfural and water.</p>

<p>Please enquire for more information about 5-Hydroxy-4-propyl-2(5H)-furanone including the price, delivery time and more detailed product information at the technical inquiry form on this page</p>

<p>4,5-Dibromo-1,2,6,7-tertahydro-8H-indeno[5,4-b]furan-8-one is a chemical reagent that is used for the debromination of ethyl cyanoacetate. The nucleophilic nature of the hydroxyl group in the target compound makes it an efficient substrate for this reaction. This reagent can be used to synthesize ramelteon which is a drug approved by the U.S. Food and Drug Administration (FDA) for insomnia treatment. This high yield synthesis highlights 4,5-dibromo-1,2,6,7-tertahydro-8H-indeno[5,4b]furan-8one's usefulness as a debrominating agent.</p>

<p>Please enquire for more information about 3’’’-Epi-Empagliflozin including the price, delivery time and more detailed product information at the technical inquiry form on this page</p>

<p>Please enquire for more information about (R)-4-Propyldihydrofuran-2(3H)-one including the price, delivery time and more detailed product information at the technical inquiry form on this page</p>

<p>2,3-Dihydro-2,2-dimethyl-7-hydroxybenzofuran is a human metabolite of carbofuran and has been shown to be an inhibitor of acetylcholinesterase. The bacterial strain CECT 4384 was used to produce the monoclonal antibody against 2,3-dihydro-2,2-dimethyl-7-hydroxybenzofuran. The monoclonal antibody was then purified by a technique called hybridoma cell line. This technique is a way to purify antibodies that are produced by hybridoma cells. It involves incubating the antibodies with an antigen such as 2,3-dihydro-2,2-dimethyl-7-hydroxybenzofuran in order to bind it and remove it from the solution. When the antibody binds to the antigen, it changes its shape and can be removed from the solution with a magnet or other device</p>

<p>3-Hydroxycarbofuran is a carbamate pesticide that inhibits acetylcholinesterase, an enzyme that breaks down the neurotransmitter acetylcholine. 3-Hydroxycarbofuran is used in analytical chemistry to measure the concentration of pesticides and herbicides in water and soil samples. This chemical has been shown to inhibit the replication of influenza A virus in vitro, as well as inhibiting the growth of human cancer cells at high concentrations. The use of 3-hydroxycarbofuran for these purposes has been limited by its instability, which can be overcome by using trifluoroacetic acid or sodium carbonate to remove water from the sample before analysis.</p>

<p>3-Methyldihydrofuran-2,5-dione is a diterpenoid alkaloid found in the plant Dictamnus albus. This compound has been shown to have metal chelating properties and can be used as an asymmetric synthesis intermediate. 3-Methyldihydrofuran-2,5-dione reacts with diazonium salt to form a high resistance molecule that is highly reactive. This chemical reacts with hydroxyl groups, amide groups, or methyl ethyl groups. The structure of this compound consists of nitrogen atoms and anhydride bonds. 3-Methyldihydrofuran-2,5-dione has been shown to exhibit electrochemical impedance spectroscopy (EIS) characteristics similar to those of other molecules that are known to be reactive.</p>

<p>9-(β-D-xylofuranosyl)guanine (9XG) is a trifluoride. It is an antiviral agent that inhibits the growth of herpes virus, in particular by methylating guanosine to 9-methylguanosine in the viral DNA. 9XG binds to the viral DNA and prevents its replication through the inhibition of RNA synthesis. The drug is active against many different types of viruses and has been shown to be effective against tissue cultures infected with herpes virus. 9XG is synthesized from guanosine and boron trifluoride etherate, which are reacted at -78 degrees Celsius for three days. This yields a mixture of compounds with various peracylation groups, which are then separated by chromatography.</p>

<p>Intermediate in the synthesis of afatinib</p>

<p>3-Amino-2-methoxy-dibenzofuran (3AMD) is a cytotoxic agent that is used in the treatment of bladder carcinoma. 3AMD inhibits DNA synthesis, leading to cell death by inhibiting the production of proteins vital for cell division. 3AMD has been shown to be a potent inhibitor of cyclen-dependent kinases and to induce DNA damage in human cells. 3AMD also has significant cytotoxicity against malignant cells and has been shown to inhibit the growth of tumours in mice. 3AMD may have carcinogenic potential due to its structural similarity with other carcinogens such as aniline and aminobiphenyl.</p>

<p>3-Methylbenzofuran-2-carboxylic acid is a dianion that binds to the cell membrane and inhibits bacterial growth. This compound has been shown to be active against bacteria at low concentrations. 3-Methylbenzofuran-2-carboxylic acid has been used as an antibacterial agent for the treatment of gram-negative bacteria such as Escherichia coli and Proteus mirabilis. It also inhibits the growth of gram-positive bacteria including Staphylococcus aureus, Streptococcus pneumoniae, and Enterococcus faecalis. The reaction temperature required for the synthesis of this compound is high, but it can be prepared at lower temperatures by using anhydrous acetonitrile in place of hydrochloric acid.</p>