Hétérocycles soufrés (S)

4-Methoxythiophene-3-carboxylic acid is a phosphonium compound that can be synthesized by the reaction of methylthiophene with deuterium. This compound is used in labelling studies to detect the presence of cyclisation, extrusion and pyrolysis reactions. It also has a variety of analogues that can be synthesized from methoxythiophene or heterocyclic compounds.

Ethyl 2-amino-4-(3,4-dimethoxyphenyl)thiophene-3-carboxylate is a nicotinic acetylcholine receptor (nAChR) antagonist that has been shown to have anti-cancer and anti-epileptic effects. It also has been shown to inhibit the polymerase chain reaction in tumor tissue and may act as a potential mechanism of action for cancer treatment. This drug is being studied as a nootropic agent, which could be due to its ability to increase contractility and granule cell activity in the cerebellum. The drug also inhibits neurotransmission through its allosteric inhibition of nAChRs on granule cells in the cerebellum.

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A raw material for use in pharma, dye and organic synthesis industries.

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Methyl 3-amino-5-bromo-thiophene-2-carboxylate is a synthetic compound that belongs to the group of carboxylic acids. It is used in organic chemistry for cross coupling reactions, such as Suzuki and Raupach-Hochstetter reactions. Methyl 3-amino-5-bromo-thiophene-2-carboxylate is particularly suitable for the synthesis of substituted carboxylic acids with high functional groups, such as fluoro-, chloro-, bromo-, cyano-, nitro-, and amide groups. This compound can be used as a fluorescent probe in liquid chromatography and has been shown to be effective in mediating the anion exchange of carboxylic acids.

2-Fluorothiophenol is a reactive organic acid that is used as an intermediate in the synthesis of other chemicals. It reacts with hydrogen and chloride to form hydrogen chloride and sodium hydrogen fluorothiophenolate, which are useful for the manufacture of dyes, perfumes, and pesticides. 2-Fluorothiophenol reacts with fatty acids to form esters. The magnesium salt of 2-fluorothiophenol is used as an insecticide against aphids, leafhoppers, and thrips. This product is also used in the production of polymers.

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3-Acetyl-5-(4-fluorobenzylidene)-4-hydroxy-2(5H)-thiophenone is a nonsteroidal antiinflammatory drug. It is an inhibitor of the enzyme ATPase and prevents the breakdown of adenosine triphosphate (ATP) to adenosine diphosphate (ADP). 3-Acetyl-5-(4-fluorobenzylidene)-4-hydroxy-2(5H)-thiophenone has been shown to increase the number of platelets in the blood, which could be due to its ability to stimulate release of cortisone from the adrenal gland. The drug combines with cyclooxygenase and inhibits prostaglandin synthesis, thereby inhibiting inflammation.

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5-Bromothiophene-2-carbohydrazide is an oxychloride compound with antimicrobial activity. It has been shown to stabilize crystals of the molecule and to have a crystal structure that is similar to phosphorus oxychloride. Elemental analysis revealed that 5-bromothiophene-2-carbohydrazide contains only carbon, hydrogen, and bromine, which are all necessary for the antibacterial activity of this compound. The antibacterial properties of 5-bromothiophene-2-carbohydrazide have been tested against fungi and plasmodium, which are parasites responsible for malaria. This compound was found to be active against both fungi and plasmodium at lower concentrations than other compounds in its class.

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2-(Thiophen-2-yl)-1,3,2-dioxaborinane is a boron compound that can be used as an emitter to produce light in organic light emitting diodes (OLEDs). 2-(Thiophen-2-yl)-1,3,2-dioxaborinane has a high quantum efficiency and a high yield. It emits blue light when excited by an electrical current. 2-(Thiophen-2-yl)-1,3,2-dioxaborinane is soluble in nonpolar solvents and has been shown to be resistant to oxygen and moisture.

Trans-2-(2-nitrovinyl)thiophene is an inhibitor of cinnamic acid derivatives. It is a potent inhibitor of cancer cells resistant to chemotherapy and can be used as a model system for cancer research. Trans-2-(2-Nitrovinyl)thiophene has been shown to selectively inhibit the proliferation of cancer cells, including human breast carcinoma cells (MDA-MB231), by blocking the synthesis of proteins required for cell division. In addition, trans-2-(2-nitrovinyl)thiophene inhibits the growth of prostate cancer cells (PC3). This compound is also effective against squaramide, a known carcinogenic compound that disrupts the synthesis of DNA in cells. Trans-2-(2-Nitrovinyl)thiophene can be used as a potential therapeutic agent in cancer treatment because it inhibits protein synthesis in drug resistant cancers and causes selective cell death in these cells.

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2,3-Dibromobenzothiophene is a brominated benzene derivative. It is used as a starting material for the synthesis of other brominated compounds and as a precursor to polymers. It is also used in the production of optical devices and in the detection of chlorine in environmental monitoring. The hydrocarbon group on this compound allows it to be cross-coupled with various organic molecules using the Suzuki coupling reaction. This process occurs at room temperature with no need for harsh reagents or solvents, making it an environmentally friendly method for producing new compounds. 2,3-Dibromobenzothiophene is a highly selective molecule that reacts with anilines to produce electroluminescent devices that are bright, long-lasting, and resistant to oxidation. These properties make it ideal for use in diodes and displays.

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