(n.) A gaseous hydrocarbon, C2H6, forming a constituent of ordinary illuminating gas. It is the second member of the paraffin series, and its most important derivatives are common alcohol, aldehyde, ether, and acetic acid. Called also dimethyl.
Example Sentences:
(1) Five structurally representative nitrosamino-ethanals (R-N(NO)CH2CHO, R = 4-ClC6H4-, CH3-, nBu-, tBu-, HOCH2CH2-) have been synthesized.
(2) These parameters are compared with those of various model groups and compounds: CH2, peptide, methane, ethane, and the 1--13 N-terminal fragments of ribonuclease.
(3) A sensitive radioimmunoassay (RIA) for the specific determination of 1-(4-methanesulphonamidophenoxy)-2-[N-(4-methanesulphonamido -phenethyl)-N- methylamino]ethane (UK-68,798), a novel class III antidysrhythmic agent, in human plasma is described.
(4) To measure [Ca2+]i, fluorine NMR spectra were acquired in a separate group of hearts loaded with the Ca2+ indicator 5F-BAPTA [5,5'-difluoro derivative of 1,2-bis-(o-aminophenoxy)ethane- N,N,N',N'-tetraacetic acid].
(5) We determined ethane production rates in rats (group I) ventilated with hydrocarbon-free air (HFA) before and after exsanguination.
(6) Acid p-nitrophenyl phosphatase in rat calvaria extract behaved in the same way as the liver enzyme and was also strongly inhibited by dichloromethylene diphosphonate, but not by ethane-1-hydroxy-1, 1-diphosphonate.
(7) Experiments using purified fatty acids revealed that ethane was preferentially produced from docosahexaenoic and linolenic, and pentane from linoleic and arachidonic acids.
(8) Rabbits were pretreated with phenobarbital, 1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane (DDT), 3-methylcholanthrene, beta-naphthoflavone, Aroclor 1254, ethanol, trans-stilbene oxide, pregnenolone-16 alpha-carbonitrile, or clofibric acid.
(9) Surprisingly, when the increase in [Ca2+]i during stimulation of oscillations was prevented by loading the cells with 1,2-bis(2-aminophenoxy) ethane-N,N,N',N'-tetraacetic acid, a persistent activation of Ca2+ release and Ca2+ efflux occurred.
(10) The purpose of this study was to test the effectiveness of various doses of disodium ethane-1-hydroxy-1,1-diphosphonate (EHDP) in an experimental rabbit model of athero-arteriosclerosis designed by Hass et al.
(11) Pesticidal contaminants in both placenta and milk were 1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane (p,p'-DDT), its metabolites 1,1-dichloro-2,2-bis(p-chlorophenyl)ethylene (p,p'-DDE) and 1,1-dichloro-2,2-bis(p-chlorophenyl)ethane (p,p'-DDD), alpha, beta, gamma - isomers of benzene hexachloride (BHC) and aldrin.
(12) In adult myocytes, when EGTA (10 or 20 mM) or bis(o-aminophenoxy)ethane-N,N,N',N'-tetraacetic acid (BAPTA, 10 mM) were included in the pipette solution, contractions were rapidly abolished, while a small (4 mV) shift of f infinity to more positive potentials was seen.
(13) Ethane-1-hydroxy-1,1-diphosphonate (EHDP) was the most effective diphosphonate in reducing myocardial and vascular degeneration and calcification, whereas diphosphonates such as ethane-1-amino-1,1-diphosphonate (EADP) and hydroxymethylene diphosphonate (HMDP) had little or no effect compared to saline controls.
(14) In vivo lipid peroxidation was monitored by measuring exhaled ethane from the animals.
(15) 3.25pm GMT Ethan Dean-Richards emails re the only goal of the game: The free-kick that led to the goal was Tiote's fifth or sixth 'tactical' foul today.
(16) The composition of 99mTc-ethane-1-hydroxy-1, 1-diphosphonate complexes, prepared with the reducing agent NaBH4 and by electrolytic reduction, was analysed by reversed-phase ion-pair chromatography and soft-gel permeation chromatography.
(17) While allowing the animal to breathe a mixture of 0.1% CO in air, normal saline, which contained appropriate amounts of six inert gases such as SF6, ethane, cyclopropane, halothane, ether and acetone, was infused at a constant rate through a peripheral vein.
(18) To investigate the role of Ca2+ we have artificially increased the calcium buffering capacity of the rod by using a patch pipet to incorporate the calcium buffer 1,2-bis(o-aminophenoxy)ethane-N,N,N',N'-tetraacetic acid (BAPTA) into the rod cytoplasm.
(19) A single dose of ethane dimethane sulphonate (EDS) given to adult male rats has a specific destructive effects on Leydig cells, which are removed from the intertubular area by macrophages.
(20) Production of MDA was greater in mouse kidney than liver and correlated better with the exhalation of ethane.
Propyne
Definition:
Example Sentences:
(1) The role of alkene monooxygenase in catalyzing chlorinated alkene degradations was established by demonstrating that glucose-grown cells which lack alkene monooxygenase and propylene-grown cells in which alkene monooxygenase was selectively inactivated by propyne were unable to degrade the compounds.
(2) 3-Dimethylamino-1-propyne irreversibly inactivates mitochondrial monoamine oxidase from bovine liver.
(3) 1-Aminobenzotriazole, 3-phenoxy-1-propyne, and 3-(2,4-dichlorophenoxy)-1-propyne, mechanism-based inactivators of cinnamic acid 4-hydroxylase, and 9-decenoic acid, a mechanism-based inactivator of the lauric acid in-chain hydroxylase, are at best poor inactivators of the omega-hydroxylase.
(4) With the film technique the different peptides were sequenced with hydrophilic phenylisothiocyanates I and IV or by the propyne programme.
(5) One analogue, 3-(2-oxo-1-pyrrolidinyl)-1-[2(R)-pyrrolidinyl]-1-propyne hydrogen oxalate (6a), was found to be a partial agonist producing a PI hydrolysis response at cortical M1 receptors approximately 3-fold larger than that produced by 1.
(6) The sequence is obtained automatically by the sequenator using the quadrol and the propyne programme.
(7) When the experiments were performed using an air-tissue interface, the dominant photoproducts identified in order of elution from the gas chromatographic column were methane, acetylene, ethylene, ethane, propyne, allene, propylene, propane, and butene.
(8) Acetic acid and methanol cleaved the tetrahydropyranyl ether group, and hydroxylamine and sodium bicarbonate cleaved the pyrrole ring to give 17 alpha-(3'-amino-1'-propyn-1'-yl)-1,3,5(10)-estratriene-3,17 beta-diol (1), estrynamine.
(9) We used mainly N,N-dimethylallylamine and 3-(dimethylamino)propyne, both as aqueous solutions at constant temperature (40 degrees C).
(10) The cleavage products were isolated and sequenced in the sequenator using a Quadrol and propyne program.
(11) indicates that the Michael acceptors 1-(4'-nitrophenyl)-2-propen-1-one (III) and 1-(4'-nitrophenyl-2-propyn-1-one (IV) are the products of the enzymic oxidation of the corresponding alcohols.
(12) Propyne (CH3C identical to CH) is not reduced by the V-nitrogenase.
(13) The latter was converted to the corresponding Grignard reagent with ethylmagnesium bromide, and then condensed with estrone tetrahydropyranyl ether to give 17 alpha-[3'-(2'',5''-dimethyl-1''-pyrryl)-1'-propyn-1'-yl)-1,3 ,5( 10)- estratriene-3,17 beta-diol 3-tetrahydropyranyl ether (3), in 85% yield.
(14) The inhibition is remarkably specific for C2H2: propyne, butyne, and ethylene are not inhibitors.
(15) We have produced a compact, lightweight oxygen concentrator, using a newly-developed polymer of poly [1-(trimethylsilyl)-1-propyne] with a performance, i.e.
(16) Two non-steroidal mechanism-based inactivators for 3 alpha-hydroxysteroid dehydrogenase (3 alpha-HSD) of rat liver have been synthesized: 1-(4'-nitrophenyl)-2-propen-1-ol (I), and 1-(4'-nitrophenyl)-2-propyn-1-ol (II).
(17) The spectral properties of the adduct of the liver enzyme with 3-dimethylamino-1-propyne are similar to those observed when the pig kidney enzyme is inactivated with pargyline (Chuang et al.
(18) 7-O-Propyn-1-yl daunomycinone was not transformed by any of the strains used under the conditions.
(19) In further experiments, designed to examine the range of the dietary effect on chemical carcinogenesis, rats were fed either the marginally lipotrope-deficient, high-fat diet or an adequate control diet, and treated wit- N-2-fluorenylacet-amide, 3,3 diphenyl-3-diemthylcarbamoyl-1-propyne, N-methyl-N-nitroso-N'-nitroguanidine, N-[4-(5-nitro-2-furyl)-2-thiazolyl]formamide, aflatoxin G1, or ethionine.
(20) The substrates used were acetol, dihydroxyacetone, glycerin, 2-propyn-1-ol, allyl alcohol, 2-butyne-1,4-diol, furfuryl alcohol, benzyl alcohol, 4-pyridylcarbinol, galactose, and stachyose.