What's the difference between glyoxime and hydroxylamine?
Glyoxime
Definition:
(n.) A white, crystalline, nitrogenous substance, produced by the action of hydroxylamine on glyoxal, and belonging to the class of oximes; also, any one of a group of substances resembling glyoxime proper, and of which it is a type. See Oxime.
Example Sentences:
(1) The chelators EGTA, NTA, bipyridine, dimethyl glyoxime, salicylate, and Desferal were ineffective at preventing autooxidation.
(2) Prill and Hammer's method (4) for microdetermination of diacetyl was modified by several authors (1-3, 7), but retaining the same principle: diacetyl is converted into dimethylglyoxime by reaction with hydroxylamine; the oxime is subsequently converted into a pink ammonoferrous glyoximate and its colour is measured by absorbance at 530 nm.
(3) Among the compounds tested, interesting structures are those of oximes bearing a thioether substituent [RA 49 (Table 1) and RA 59 (Table 2)] chloro derivative of MINA [RA 55 (Table 2)] and dipyridyl glyoxime methiodide RA 56 (Table 1).
Hydroxylamine
Definition:
(n.) A nitrogenous, organic base, NH2.OH, resembling ammonia, and produced by a modified reduction of nitric acid. It is usually obtained as a volatile, unstable solution in water. It acts as a strong reducing agent.
Example Sentences:
(1) 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.
(2) Both diaminobutyric and diaminopropionic acids were seen in the acid hydrolyzate of the protein treated with hydroxylamine and subjected to rearrangement in the presence of carbodiimide.
(3) Most of the somatogenic binding activity was recovered by hydroxylamine treatment, which removes O-acetyl groups from tyrosine residues but not N-acetyl groups from lysine residues.
(4) The chemistry involved reaction rate constant measurements of MSF hydrolysis and for reactions with phenolic, amine, oxime, hydroxamic acid, phenyl N-hydroxycarbamate, and hydroxylamine compounds and cupric imidazole and bipyridyl complexes.
(5) The data analyses indicate that the hydroxylamine method is a suitable substitute for the microbiological method for potency assays and stability studies of ampicillin formulations.
(6) Metabolites identified include products from side-chain C-hydroxylation (benzyl alcohols and benzaldehydes) and N-hydroxylation (hydroxylamines and nitroso derivatives).
(7) The syntheses of the secondary hydroxylamines of nor1chlorpromazine and nor1promazine via their corresponding primary hydroxylamines and oximes are described.
(8) The microsomal oxidation of 2-aminobenzyl alcohol also resulted in the formation of two reducing agents, one of which was the corresponding hydroxylamine.
(9) Hydroxylamine mutagenesis was used to alter the tar gene that encodes the transmembrane Tar protein required for chemotaxis.
(10) The enzyme displayed a very broad substrate specificity, reducing various N-oxide and sulfoxide compounds as well as chlorate and hydroxylamine.
(11) Antisera to NADPH-cytochrome c reductase markedly decreased hydroxylamine accumulation during incubation but had no effect on the rate of 2-naphthylamine N-oxidation.
(12) The single oxidation of the oxygen binding site can be reversed by reduction with hydroxylamine, and the oxygen binding properties of the protein are simultaneously restored.
(13) After inactivation by 1-D-1,2-anhydro-myo-inositol the label was released by hydroxylamine and identified as scyllo-inositol.
(14) Enzyme inactivated with diethyl pyrocarbonate was re-activated by hydroxylamine.
(15) Hydroxylamine (1 mM) and ethanolamine-O-sulfate (10 mM), well-known inhibitors of cerebral GABA formation and GABA catabolism respectively, inhibited renal tubular GABA formation at 100% and 44% respectively.
(16) The mesophyll material could be made to resemble the bundle-sheath chloroplasts in respect of both phenomena by adding to it 1-(3',4'-dichlorophenyl)-3,3-dimethyl-urea and hydroxylamine, together.
(17) Hydroxylamine removes (reduces) oxidizing equivalents, generated in the water-splitting system by flash excitation.
(18) A nucleotide-peptide linkage involving a phosphoamide bond is unlikely since the complex is resistant to 3.5 M hydroxylamine at pH 4.75.
(19) By hydroxylamine mutagenesis, we have identified a rad1 mutant allele whose encoded protein fails to complex with RAD10.
(20) Among the compounds studied 4 hydroxylamine derivatives were observed to have a mutagenic effect.