What's the difference between acetal and ether?

Acetal


Definition:

  • (n.) A limpid, colorless, inflammable liquid from the slow oxidation of alcohol under the influence of platinum black.

Example Sentences:

  • (1) After 4 to 6 hours of recirculation, accumulation of vasoactive amine, 5-hydroxytryptamine, its major metabolite, 5-hydroxyindole acetic acid, and its precursor amino acid, tryptophan were detected.
  • (2) Preincubation of human neutrophils with recombinant tumor necrosis factor alpha has previously been shown by us to enhance superoxide production of neutrophils in response to the chemotactic peptide formyl-methionyl-leucyl-phenylalanine, and the phorbol ester, phorbol myristate acetate.
  • (3) Only methoxyindole acetic acid was detectable after incubation of unstimulated and alpha-adrenergic-agonist-treated pineal glands.
  • (4) The 1-0-methylalduronic-acidmethylesters, obtained by the methanolysis of the polysaccharides, are reduced with boronhydrid to the corresponding methyl glycosides; there are split with acid to the aldoses, which are converted in pyridine with hydroxylamine to the aldoximes and than with acetic anhydride to the aldonitrilacetates, which can be separated by gaschromatography without difficulty.
  • (5) The drug is extracted from serum or urine with ethyl acetate, separated by TLC, and determined by fluorescence quenching densitometry.
  • (6) Basal plasma levels of oxytocin were found to be low in sodium-deficient adrenalectomized rats and in intact animals treated daily with desoxycorticosterone acetate, both of which groups drank large amounts of NaCl solution, whereas basal plasma levels of arginine vasopressin were neither stimulated nor suppressed.
  • (7) It was shown that the levels of ATP and ADP in the mycelium depended on the carbon source: the maximum and minimum ATP concentrations were found on the glucose and acetate media respectively, the maximum and minimum ADP concentrations showed inverse dependence.
  • (8) Unaltered surface enamel of extracted human teeth was subjected to tests of resistance to dissolution in 10 mM acetic acid at pH 4.0 and 10 mM EDTA at pH 7.4 in a miniature continuous flow system.
  • (9) 2) Neurotropin had no effect on the autolytic degradation of cartilage, but promoted the incorporation of 14C-acetate into the proteoglycan in the articular cartilage of rabbits.
  • (10) The treatment group received 75 mg of roxatidine acetate hydrochloride at 9 PM and 12 to 13 hours later gastric juice secretion was measured with gastric x-ray films in both groups.
  • (11) In these animals, propionate was the major VFA taken up by the liver and approximately 50% of absorbed acetate was also removed by the liver.
  • (12) A putative pineal metabolite, 5-methoxyindole-3-acetic acid, was quantified in human urine by a gas chromatographic-mass spectrometric method.
  • (13) AIS treatment lowered serum insulin levels, serum triglyceride levels, caloric intake, weight gain, liver weight, acetate 14C incorporation into cholesterol 14C, and the percentage of liver lipid that was cholesterol.
  • (14) One week after initiation is 1-2 months before the appearance of benign papillomas that harbor activated Ha-ras oncogenes when the initiated mice are promoted with the tumor promoter phorbol 12-myristate 13-acetate.
  • (15) Cellulose acetate electrophoresis of Chironomus utahensis hemolymph demonstrated a six-band pattern for hemoglobins.
  • (16) Addition of MoAb 60.3 to normal neutrophils produced dose-dependent inhibition of neutrophil aggregation in response to phorbol myristate acetate, zymosan-activated plasma, and N-formyl-methionylleucylphenylalanine.
  • (17) One middle carpal joint of each horse was injected 3 times with 100 mg of 6-alpha-methylprednisolone acetate, at 14-day intervals.
  • (18) Imported sweets and liqueurs were homogenized and extracted with ethyl acetate.
  • (19) The aza analogue (RS)-3-hydroxy-2,5-pyrrolidinedione-3-acetic acid (6) of the five-membered citric anhydride (2) was prepared in the sequence citric acid----2-phenyl-1,3-dioxolan-4-one-5,5-diacetic acid (1)----citric acid beta-amide (3)----6 and used to resolve ambiguities in the mechanism of the citrate synthase reaction.
  • (20) A group of [4-(2-bromoalkanoyl)phenoxy]acetic acids was studied to determine if there was an association between the alkylating ability and the diuretic activity of its members.

Ether


Definition:

  • (n.) A medium of great elasticity and extreme tenuity, supposed to pervade all space, the interior of solid bodies not excepted, and to be the medium of transmission of light and heat; hence often called luminiferous ether.
  • (n.) Supposed matter above the air; the air itself.
  • (n.) A light, volatile, mobile, inflammable liquid, (C2H5)2O, of a characteristic aromatic odor, obtained by the distillation of alcohol with sulphuric acid, and hence called also sulphuric ether. It is powerful solvent of fats, resins, and pyroxylin, but finds its chief use as an anaesthetic. Called also ethyl oxide.
  • (n.) Any similar oxide of hydrocarbon radicals; as, amyl ether; valeric ether.

Example Sentences:

  • (1) It was shown in experiments on four dogs by the conditioned method that the period of recovery of conditioned activity after one hour ether anaesthesia tested 7 to 7.5 days.
  • (2) After 3 and 6 months, blood collected by cardiocentesis using ether anesthesia and then sacrificed to remove CNS and internal organs.
  • (3) Glycosyl ceramide concentration was determined by gas-liquid chromatography of the trimethylsilyl ethers of the methyl glycosides.
  • (4) Ether extracts were analyzed by gas chromatography-mass spectrometry (GC-MS) and various chlorinated and non-chlorinated compounds were detected, e.g.
  • (5) 1 Rats were convulsed once daily for 7 days by exposure to the inhalant convulsant agent, flurothyl (Indoklon, bis (2,2,2-trifluouroethyl)ether).
  • (6) No impurities in the technical grade ether influenced the responses.
  • (7) Depletion of extracellular Ca2+ by EGTA [ethylene glycol-bis(beta-aminoethyl ether)-N,N,N'N'-tetraacetic acid] attenuated both [Ca2+]i increase and superoxide production induced by particles.
  • (8) It was presumed that thymohydroquinone is excreted as ethereal sulfuric acid conjugate in man.
  • (9) The authors have carried out an experimental study of an insufficiently explored problem of the diffusion capacity of the ethers of cholesterol through the skin and the possibility of their intra-articular transport with cholesterol ether of the oleic acid marked 1,2(3)H taken as an example.
  • (10) Chelation of extracellular calcium with ethyleneglycol-bis(beta-aminoethyl ether)N,N,N',N' tetraacetic acid (EGTA) did not abolish the increase in calcium.
  • (11) The UE and KE fractions were then separated by silicic acid column chromatography with a stepwise elution method using ether-hexane.
  • (12) The enzyme appears to be highly specific since D-dopachrome, alpha-methyldopachrome, dopaminochrome, adrenochrome methyl ether and deoxyadrenochrome are not substrates.
  • (13) After introduction of surgical anesthesia with general agents such as ether and chloroform, a large number of deaths due to anesthetic toxicity were reported.
  • (14) Data of ether-extracted total fat content versus data of fat marbling planimetry correlated well with r = 0.9.
  • (15) When the enzyme is inactivated with 16alpha-[2-3H]bromoacetoxyestradiol 3-methyl ether, amino acid analysis of acid hydrolysates reveals 3-carboxymethylhistidine and 1,3-dicarboxymethylhistidine.
  • (16) In addition these methods of estrogen treatment potentiated the ether-induced increase in plasma prolactin in the morning (9.00-11.00) beginning on week 2 and continuing for 3-8 weeks.
  • (17) Studies of structure-transacylation relationships for a series of acylhydroxamic acids of chlorinated biphenyl ethers and their related compounds by rat liver N-arylacylhydroxamic acid-dependent N-acyltransferase (AHNAT) are described.
  • (18) The biologically inactive phorbol ester 12-O-tetradecanoyl phorbol-13-acetate methyl ether (10 nM) had no effect on 45Ca2+ uptake.
  • (19) Steroids were extracted with ethyl ether, and cortisol was purified by gel column chromatography prior to assay.
  • (20) The method comprised adsorption on Extrelut column from alkaline plasma, elution with diethyl ether-methylene chloride, evaporation in the presence of 0.01 M hydrochloric acid and injection of the acid solution onto a mu Bondapak C18 column, using acetonitrile-0.025 M potassium dihydrogenphosphate as mobile phase and ultraviolet detection at 210 nm.

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