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Topic: Tetrahydrothiophene

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	Photocatalytic process for purifying water polluted by tetrahydrothiophene - US Patent 6153112 (Site not responding. Last check: 2007-10-20)
		Tetrahydrothiophene, an odorizing thioether, is normally added to gas for household and industrial use to reveal accidental losses along the distribution lines.
		At the end of the process, the tetrahydrothiophene is simply and economically eliminated to obtain completely deodorized water without the organic pollutant, completely transformed into carbon dioxide and sulfate ion.
		Further samples of the dispersion are taken after one and two hours of stirring of the dispersion at room temperature and at a constant pressure of 100 mm Hg of oxygen, with the UV lamp switched off.
	www.patentstorm.us /patents/6153112.html (1869 words)

	RALPH GRAY TRUCKING CO.
		Tetrahydrothiophene is a stenching agent used in the natural gas industry to impart a strong, noxious odor, similar to that of sewer gas, for the purpose of providing a warning in the event of a gas leak.
		Tetrahydrothiophene is useful for this purpose because its characteristic odor is apparent to most people at a level (1 ppb in air) below exposure levels which are associated with transient health effects such as eye or respiratory tract irritation.
		As noted above, tetrahydrothiophene is a useful warning agent for propane or natural gas leaks because its noxious odor is apparent below exposure levels which are associated with transient irritant effects.
	yosemite.epa.gov /r9/sfund/overview.nsf/507c94f730e0ebf488256958005cda5f/2fd072b4c8675af3882568db00821606?OpenDocument (2736 words)

	Patent 4395479
		Stripping compositions for removing resist materials from substrates comprise compositions of a 2-pyrrolidinone compound and a tetrahydrothiophene 1,1-dioxide compound.
		More particularly, this invention relates to a novel resist stripping composition comprising a mixture of a 2-pyrrolidinone compound and a tetrahydrothiophene 1,1-dioxide compound which can also include polyethylene glycol and/or a diethylene glycol monoalkyl ether and to stripping resists with said stripping compositions.
		Compositions of this invention, denoted as compositions A through I, which correspond in composition to those so designated in Tables IA and IB, are compared to results obtained for the individual components alone for three generally difficult to remove photoresists, namely Shipley's AZ-1350J photoresist, Tokyo Ohka Kogyo Co. Ltd.'s OFPR-800 photoresist and Fugu's FPPR-200 photoresist.
	www.freepatentsonline.com /4395479.html (2514 words)

	Electrolyte for rechargeable lithium battery - US Patent 6589698 (Site not responding. Last check: 2007-10-20)
		The electrolyte of claim 1 further comprising at least one additional organic solvent selected from the group consisting of carbonates, esters and ethers.
		Preferred thioether is tetrahydrothiophene, which is produced by substituting sulfur atoms for oxygen atoms in tetrahydrofuran.
		Furthermore, the electrolyte of the present invention further may include an oxygen-included organic solvent selected from carbonate, ester or ether as used in conventional electrolytes.
	www.patentstorm.us /patents/6589698.html (1813 words)

	Tetrahydrothiophene 1-oxide as an electron acceptor for Escherichia coli. (Site not responding. Last check: 2007-10-20)
		Tetrahydrothiophene 1-oxide as an electron acceptor for Escherichia coli.
		Tetrahydrothiophene 1-oxide as an electron acceptor for Escherichia coli.Escherichia coli used tetrahydrothiophene 1-oxide (THTO) as an electron acceptor for anaerobic growth with glycerol as a carbon source; the THTO was reduced to tetrahydrothiophene.
		Cell extracts also reduced THTO to tetrahydrothiophene in the presence of a variety of electron donors.
	www.pdg.cnb.uam.es /UniPub/iHOP/gp/5507295.html (143 words)

	British Journal of Pharmacology - Overexpression of glutathione S-transferase A1-1 in ECV 304 cells protects against ...
		Conjugation of busulfan with glutathione results in a positively charged sulfonium ion that is highly unstable under physiological conditions (Hassan and Ehrsson, 1987a).
		The sulfonium ion is cleaved to the lipophilic compound tetrahydrothiophene (THT), which undergoes a series of oxidation reactions.
		Formation of tetrahydrothiophene (THT) as an indicator for GSTA1-1 activity was substantial in GSTA-1-transfected cells.
	www.nature.com /bjp/journal/v137/n7/full/0704972a.html (5103 words)

	2,5-Dihydroxy-3,4-O-isopropylidene-tetrahydrofuran for the Synthesis of Heterocycles (Site not responding. Last check: 2007-10-20)
		The latter were found to be excellent Michael acceptors and allowed the preparation of pyrrolizidine and tetrahydrothiophene.
		The pyrrolizidine alkaloids continue to attract the attention of synthetic chemists and of biologists due to their potent biological effects and the synthetic challenges they represent.
		Following on from this we investigated the reaction of sodium hydrosulfide with 7, and this resulted in the formation of the racemic tetrahydrothiophene 10 in 53% yield.
	www.arkat-usa.org /ark/journal/2000/I05_Meth-Cohn/MC-102R/0071.asp (1780 words)

	eMedicine - Biotin Deficiency : Article by Howard R Sloan, MD, PhD† (Site not responding. Last check: 2007-10-20)
		The final step in solving the mystery of egg-white injury syndrome was the demonstration that the syndrome could be prevented by heating the egg whites, a process that denatures avidin and destroys its affinity for biotin.
		A valeric acid substituent is attached to 1 of the 2 carbon atoms of the tetrahydrothiophene ring.
		A valeric acid substituent is attached to one of the carbon atoms of the tetrahydrothiophene ring.
	www.emedicine.com /ped/topic238.htm (3520 words)

	Subject: ORGLIST: 2-ethynyl-oxirane (Site not responding. Last check: 2007-10-20)
		I havetried to use commercially prepared chloroacetaldehyde after crystallizingthe material out of water, drying, and then the suggested Grignardwith ethynyl magnesium bromide, but was only able to recover starting materials.
		I thought it was possible to use the tetrahydrothiophene synthesis (referencelisted below) starting with propargyl bromide since I am not interestedin the functionalities introduced in the original French paper....
		I still think this is the most feasible method of the two, however, I have tried this method several times with no luck.
	www.dq.fct.unl.pt /orglist/archive/00000005.htm (603 words)

	Biofind Jobs - Vacancies, Resumes, CVs and Recruiters for the Biotech, Diagnostics and Pharma Industries (Site not responding. Last check: 2007-10-20)
		Project required the detailed study of the reactions of three plant species, Arabidopsis thaliana, Brassica rapa, and common morning glory, to small quantities of tetrahydrothiophene in soil and as vapor.
		Assessment of the effects allowed the researchers to hypothesize that tetrahydrothiophene mimics ethylene in small angiosperms.
		Amanda Hall (co-author) presented Toxic effect of Tetrahydrothiophene on Angiosperms to Tri-Beta regional conference (April 1999) Grand Junction, CO U.S.A. Prepared by Elizabeth Larkin and Amanda Hall.
	www.biofind.com /jobs/candidates_search_details.asp?CandidatesId=3932&PageCount=541 (915 words)

	Spotleak® Gas Odorants (Site not responding. Last check: 2007-10-20)
		Arkema's Thiochemicals offer a complete range of products and services to ensure reliable and safe gas odorization.
		We manufacture Tetrahydrothiophene, Spotleak® Odorant Blends and LPG odorants to meet your gas odorization needs.
		We offer a wide-range of logistic solutions to bring odorant to your facility in an odorless way, all over the world.
	www.elf-atochem.com /index.cfm?pag=271 (155 words)

	Chiral sulfonium ylides
		Tetrahydrothiophene (20 mol%) was employed as a mediator (
		Yields and ratios of epoxides formed from benzaldehyde (100 mol%) and tosylhydrazone salts 77 using 20 mol% of tetrahydrothiophene as a mediator (
		The reactions of simple sulfides (dimethylsulfide, tetrahydrothiophene) in the catalytic cycle with benzaldehyde gave stilbene oxide as an 86:14 ratio of
	herkules.oulu.fi /isbn9514265718/html/x151.html (6654 words)

	Tetrahydrothiophene - CAS 110-01-0 - Catalog of Chemical Suppliers (Site not responding. Last check: 2007-10-20)
		Visit our website to find more information like MSDS, infra-red (IR), molfile, sdf file, structure, price, a catalog of over 130000 chemicals and over 150 chemical suppliers.
		You may also add your own catalog of chemicals for free.
		Tetrahydrothiophene; 99%; thiacyclopentane; thiophan; Tetramethylene sulphide~Thiolane; Tetrahydrothiophene for synthesis; Tetramethylene sulfide; THT
	www.chemexper.com /chemicals/supplier/cas/110-01-0 (99 words)

	[No title] (Site not responding. Last check: 2007-10-20)
		The vibrational spectra of 1,3-dithiolane and tetrahydrothiophene have been recorded and analyzed with a focus on the low-frequency ring-bending and ring-twisting vibrations.
		) region of the far-infrared spectrum while for tetrahydrothiophene bands were observed between 40 and 115 (cm
		The mid-infrared and Raman spectra were utilized to assign the other vibrations of these molecules and to compare the experimental frequencies to predicted values from the MM3 molecular mechanics program.
	spectroscopy.mps.ohio-state.edu /symposium_52/Abstracts/p305.html (133 words)

	Observation and Properties of the Hydrogen-Bonded Heterodimer Tetrahydrothiophene···HCl (Site not responding. Last check: 2007-10-20)
		Cl, of a hydrogen-bonded dimer between tetrahydrothiophene and hydrogen chloride have been measured in the frequency range 6-18.5 GHz using a molecular beam Fourier transform microwave spectrometer.
		Spectral analysis gave rotational, quartic centrifugal distortion and Cl-nuclear quadrupole coupling constants for each isotopomer.
		The rotational and quadrupole coupling constants have been interpreted in terms of a geometry in which hydrogen chloride lies on the plane bisector to the CSC angle of tetrahydrothiophene.
	pubs.acs.org /cgi-bin/jtext?jpcafh/102/i21/abs/jp9803079 (168 words)

	Conformation and Stability of Adducts of Sulfurated Cyclic Compounds with Water: Rotational Spectrum of ... (Site not responding. Last check: 2007-10-20)
		O) has been studied by free jet millimeter wave absorption and molecular beam Fourier transform microwave spectroscopy.
		The rotational parameters have been interpreted in terms of a geometry in which the water molecule acts as proton donor lying close to the plane bisector to the CSC angle of tetrahydrothiophene.
		The parameters characterizing the hydrogen bond are the distance between the sulfur and hydrogen atoms, r(S···H) = 2.37(4) Å, and the angle between the line bisecting the CSC angle of tetrahydrothiophene and the S···H bond,
	pubs.acs.org /cgi-bin/abstract.cgi/jpcafh/1999/103/i27/abs/jp991002c.html (198 words)

	Gastec Tetrahydrothiophene Detector Tubes - Zefon International, Inc.
		Gastec Tetrahydrothiophene Detector Tubes - Zefon International, Inc.
		If you have disabled Javascript in your browser click here
		The following are the Gastec detector tubes available for Tetrahydrothiophene:
	www.zefon.com /store/customer/product.php?productid=492&cat=102&page= (134 words)

	Energy Citations Database (ECD) - Energy and Energy-Related Bibliographic Citations
		Energy Citations Database (ECD) Document #6651468 - Vacuum ultraviolet photochemistry of tetrahydrothiophene and sulfolane
		Availability information may be found in the Availability, Publisher, Research Organization, Resource Relation and/or Author (affiliation information) fields and/or via the "Full-text Availability" link.
		The vacuum uv photolysis of tetrahydrothiophene (THT) involves the breaking of the S to..cap alpha..-C bond.^Besides ethylene, C/sub 3/H/sub 6/ and 1,3-butadiene are also formed.^Photolyses of THT, tetrahydrofuran, and pyrrolidine are similar.^The vacuum uv photolysis of tetramethylene sulfone (sulfolane) was also studied; products are SO/sub 2/, cyclobutane, 1-butene, and ethylene.^No cis-2-butene was observed.^(DLC)
	www.osti.gov /energycitations/product.biblio.jsp?osti_id=6651468 (139 words)

	NZ GCP3: 1993 - New Zealand Gas Code of Practice for Odorisation of Gas - 4. Odorant Selection
		NZ GCP3: 1993 - New Zealand Gas Code of Practice for Odorisation of Gas - 4.
		Odorants shall be either a mercaptan or mercaptan/sulphide blend or tetrahydrothiophene or tetrahydrothiophene blended with either mercaptan or sulphide compounds.
		Odorant blends shall consist of components with similar vapour pressures to prevent fractionation.
	www.med.govt.nz /ers/gas/gcp03/gcp03-05.html (125 words)

	kincat2_3p277abs (Site not responding. Last check: 2007-10-20)
		Abstract—Independent reactions of thiophene reduction to tetrahydrothiophene and thiophene hydrogenolysis
		The rate of thiophene hydrogenation over tungsten disulfide increases with increasing
		thiophene concentration and hydrogen pressure and is inhibited by tetrahydrothiophene.
	www.maik.rssi.ru /cgi-bin/search.pl?type=abstract&name=kincat&number=2&year=3&page=277 (149 words)

	[No title]
		Use adequate general or local explosion-proof ventilation to keep airborne levels to acceptable levels.
		OSHA Vacated PELs: Tetrahydrothiophene: No OSHA Vacated PELs are listed for this chemical.
		Eyes: Wear safety glasses and chemical goggles if splashing is possible.
	www.coleparmer.com /catalog/file_redirect.asp?file=Msds/90479.htm (940 words)

	Catalogo Articoli (Site not responding. Last check: 2007-10-20)
		SYNTHESIS OF PLATINUM NANOPARTICLES STABILIZED BY CO AND TETRAHYDROTHIOPHENE - FACILE CONVERSION TO MOLECULAR-SPECIES
		The reaction of Pt-2(dba)(3) (dba=[dibenzylidene]acetone) with I atm CO in THF in the presence of tetrahydrothiophene (THT) leads to nonagglomerated 1.3-nm stable platinum(0) particles (1), most of which are noncrystalline, as characterized by HREM and WAXS analyses.
		Some globulous regions have been shown to accommodate larger (ca.
	serials.cib.unibo.it /cgi-ser/start/it/spogli/df-s.tcl?prog_art=361569&language=ITALIANO&view=articoli (187 words)

	Molecular Modeling exercises Chapter 15 (Site not responding. Last check: 2007-10-20)
		15.49 Use HyperChem to examine electrostatic potential maps of the heterocycles tetrahydrothiophene, 2,3-dihydrothiophene, and thiophene.
		How does the electron density distribution around sulfur change?
		You may have to reset the Mapped Function Range to the values mentioned above, using Display, Isosurface, Mapped Function Options.
	www.uaf.edu /chem/McMurryModeling/McMurryExer321/Chap15/Chap1549.htm (105 words)

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