(n.) Any one of five hydrocarbons, C6H14, of the paraffin series. They are colorless, volatile liquids, and are so called because the molecule has six carbon atoms.
Example Sentences:
(1) It was readily soluble, however, in nonpolar solvents such as n-hexane and chloroform.
(2) The UE and KE fractions were then separated by silicic acid column chromatography with a stepwise elution method using ether-hexane.
(3) We have investigated the whole-body dermal penetration of styrene, xylene, toluene, perchloroethylene, benzene, halothane, hexane, and isoflurane in rats and compared the permeability constants with available human studies on vapor penetration.
(4) Simple hexane and formic acid-hexane extraction methods, involving pretreatment of the serum with formic acid, were compared by radiometric and by paper chromatographic and gas chromatographic analysis.
(5) Identification of this new n-hexane metabolite included enzymatic hydrolysis of the excreted glucuronide, derivatization of the keto group with O-methylhydroxylamine, and subsequent GC-MS analysis.
(6) TCDD is extracted from alkaline solution with n-hexane and purified by column chromatography on silica gel and Florisil.
(7) Luminescence yield, absorption spectra and molecular weight dependence of chlorophyll in methylethylketone and n-hexane on concentration was investigated.
(8) Sulfamoyldapsone was extracted from tissues with acetonitrile saturated with n-hexane.
(9) Stereoselectivity of several triacylglycerol lipases (EC 3.1.1.3) has been investigated in the enzymatic esterification of rac-1-O-octadecylglycerol with oleic acid in the presence of organic solvents, such as hexane.
(10) Nerve damage, paralysis and cancer The solvent n-hexane is used to clean electronic displays, including Apple’s iPhone.
(11) Extractions by the Twisselmann method give increasing yields in the order n-pentane, hexane, and n-heptane.
(12) A xanthone was isolated from the hexane fraction of the Swertia chirayita plant and identified as 1,8-dihydroxy-3,5-dimethoxyxanthone (swerchirin).
(13) Leaching the lyophilized mitochondrial fraction with either hexane or acetone increased substantially the yields of the metabolites.
(14) The derivative, pentafluorophenyloxazolidine, is readily extracted from plasma into a small volume of hexane.
(15) Treatment of this ketone with either phenyllithium or phenylamagnesium bromide in ether at room temperature followed by solvolysis of the resulting alcohol in a mixture of trifluoroacetic acid, sodium azide, and chloroform gave a mixture of cis- and trans-3-azido-3-phenylbicyclo[3.1.0]hexanes.
(16) This method is based on an hexane extraction followed by column chromatographic clean-up and preseparation as well as qualitative and quantitative gas chromatographic analysis.
(17) Imexon (4-imino-1,4-diazobicyclo-3.1.0-hexan-2-one) was moderately effective in the treatment of a retroviral infection in a genetically defined murine model.
(18) Extraction of raw soybeans with hexane allowed production of 20-fold more aflatoxins, but levels were still lower than those found on rice or corn.
(19) Affirmative results were obtained to prove that diffusion-absorption on carbon-desorption dosimetry is applicable to monitor exposure to mixed vapors of organic solvents (n-hexane:ethyl acetate:toluene=1:4:1).
(20) Testosterone was estimated by the enzyme immunoassay after extraction with hexan: ether (4:1) for serum from men and additional thin layer chromatographic step for serum from women.
Hexene
Definition:
(n.) Same as Hexylene.
Example Sentences:
(1) Sexual differences in detoxication rate of hexenal persist also in old animals.
(2) Hexenal decreases TE blood plasma level and simultaneously increases their erythrocyte concentration.
(3) Light hexenal anesthesia was found not to affect the mean values of hemodynamics and O2 tension in the blood but increased the CO2 tension in arterial blood and decreased the oxyhemoglobin content and pH of the blood in dogs.
(4) Patterns of hemoproteins turnover were studied in microsomal and mitochondrial fractions of liver tissue of guinea pigs with various duration of hexenal sleep; these patterns were calculated by means of modified procedure involving incorporation of 14C-aminolevulinic acid.
(5) Additional experiments dealt with the perceived intensity of pyridine and cis-3-hexen-1-ol over time in the realistic setting of an environmental chamber.
(6) Opposed to this course, the reaction of 1b with 1,1,1,2,2,3,3-heptafluoro-6-(2-thienyl)-4,6-hexanedione (4) fails to lead to ring closure but rather yields 4,4,5,5,6,6,6-heptafluoro-3-(2-methyl-1-thioureido)-1-(2-thienyl)-1-hexen-1,3-diol (5).
(7) The trauma of the cervical spine was simulated under hexenal anesthesia in non in bred albino rats (100-150 g of weight).
(8) This would suggest similarities in the mechanisms of action of the PAs and alkenals, lending support to the proposed role of trans-4-OH-2-hexenal as an important toxic metabolite of the PAs.
(9) The influence of ecgonine, tropine, tropinon, and some of their derivatives, propan, N-methylpyrrholidine, N-methylpiperidine on impulse summation in the central nervous system, conditioned reflex of avoidance, antagonism to hexenal, synergisim to cocaine and also their toxicity (LD50) have been studied under experimental conditions.
(10) The studies of hexenal concentration have demonstrated the absence of negative effect on the newborn delivered by cesarean section.
(11) All the three preparations suppressed the motor activity, decreased the muscle tone and the body temperature, potentiated the action of hexenal, possessed the antispasmodic and hypnotic activity.
(12) For initial anesthesia, sombrevin, kalipsol, hexenal were applied, basal anesthesia was performed with neuroleptic analgetics and combined electric anesthesia.
(13) Detection thresholds for pyridine and cis-3-hexen-1-ol in argon were 106 ppb and 19 ppb, respectively.
(14) The intensity of metabolism of hexenal, amidopyrine, phenacetin, promedol, acetone, hydrocortisone, testosterone and prostaglandin E2 by the isolated microsomes of the liver, kidneys, small intestinal mucosa and lungs was studied polarographically by the rate of oxygen absorption in experiments on 20 male rabbits four days following partial hepatectomy and liver ischemia.
(15) The duration of action and the pharmacological activity of hexenal, phentanyl, meprobamate, corazole and sodium barbital were studied in male rats with acute intestinal ileus (AII) 12, 24, 48 and 72 hours after its reproduction and 24 hours after surgical treatment.
(16) On the other hand, cyclodecene oxide was a substrate of cEH, but no diol formation was detected when cyclopentene, -hexene and -dodecene oxides were incubated with cytosolic enzyme.
(17) cis-3-hexen-1-ol, trans-2-hexenal, cis-3-hexenyl acetate, trans-2-hexen-1-ol and 1-hexanol, were recorded extracellularly.
(18) Soporific effect of hexenal was distinctly increased in the burns, which correlated to the severity of thermic impairment.
(19) Recently our laboratory isolated trans-4-OH-2-hexenal from the hepatic microsomal metabolism of the macrocyclic pyrrolizidine alkaloid (PA) senecionine and demonstrated in vivo that hepatic necrosis occurred following injection into the hepatic portal vein.
(20) Differences in hexenal detoxication rate and its induction with small doses of phenobarbital in mongrel female rats, depending upon the stage of the sex cycle, were investigated.