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Showing 1 to 20 of 31 for “"hydrazide"”.
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Hydrogen Storage in Metal Fragments grafted Silicas and Chromium Hydrazide Gels
… used as modules in the design of novel chromium hydrazide gels that use low valent chromium centers as H2 binding sites. These materials were synthesized at various Cr to hydrazine molar ratios and have room temperature excess hydrogen storage of up to 1.01 wt%, and binding enthalpy of up to viii …
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Process design for the production of maleic acid hydrazide for weed control
… drying tests at 25 to 88 °C were employed on hydrazide slurries of free moisture content from 1.258 to 1.515 pounds of water per pound of hydrazide. Centrifuge tests at 2000 to 4700 revolutions per minute and a rotary filtration test under a 10 inch vacuum were employed on 13 weight per cent …
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Conversion of the batch process of manufacture of maleic acid hydrazide to a continuous process
… vegetation when improperly applied. Maleic acid hydrazide is a relatively new herbicide, possessing the hormone—like property of retarding plant growth for long periods of time by preventing the division of cell nuclei. Field applications of the hydrazide have shown good growth retarding ability …
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The effect of maleic hydrazide in controlling plant populations in the strawberry in southwest Virginia
The effects of Maleic Hydrazide (MH) in controlling strawberry plant populations were studied. Foliar applications of MH at 1000 ppm resulted in reduced runner length. The effect of MH sprays appeared to be directly related to the stage of rooting at the time of spray applications. Rooted plants …
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Synthesis and characterization of transition and some group 14 metal complexes containing ligands derived from 2-acetylpyridine and hydrazide derivatives, and their antiplasmodium activities
… ligands derived from 2-acetylpyridine and hydrazide derivatives is reported. The first set consists of complexes containing a ligand derived from 2-acetylpyridine and S-methyldithiocarbazate while the second set is of complexes containing a ligand derived from 2-acetypyridine and …
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Influence of nitrogen rate, harvest frequency, lower leaf management, and chemical topping on mammoth cultivars of flue-cured tobacco
… shorter than hand-topped plants in 1987. Maleic hydrazide treatments resulted in 429 to 700 kg ha⁻¹ lower yields and lower values than hand topping and 6 more suckers than all other treatments. The fatty alcohol / maleic hydrazide treatment produced 380 kg ha⁻¹ higher yields and grade indices …
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Design and synthesis of probes for detection of protein-protein interaction and RNA localization
… use of the ketone biotin - benzophenone-biotin hydrazide system for detecting the formation of cyan fluorescent protein and NF-kappaB p50 dimers was assessed. A series of benzophenone-based probes were synthesized and tested for photocrosslinking activity to investigate the efficiency of …
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Identification and characterisation of the cell surface and enzymatic barriers to plasmid transformation in Corynebacterium glutamicum and related species
… the presence of glycine and/or isonicotinic acid hydrazide (INH) and resulting lipid profiles (mycotic acids and fatty acids) of several strains of corynebacteria. (ii) examining the enzymatic barriers to transformation of these corynebacteria with specific reference to methyltransferase (MTase) …
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Synthesis and Characterization of Bexarotene Derivatives with Potential Biological Activity // Получаване и охарактеризиране на бексаротенови производни с потенциална биологична активност
… has been developed. Involving the preparation of hydrazide and the subsequent interplay with carbonyl compounds to form the target hydrazones. Hydrazide-hydrazone compounds have attention in the last few decades because of the diverse pharmacological effects they possess. Hydrazones and their …
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Characterization of a novel cellulose biosynthesis inhibitor, CBI28, in Gluconacetobacter xylinus
… genetics and EMS mutagenesis. An EZ-Link Biotin Hydrazide Kit was used to create a CBI28-Biotin conjugate for further studies. Gluconacetobacter xylinus cells were exposed to 10 uM CBI28 to induce cellulose biosythesis inhibition, lysed and small hydrophobic molecules were extracted using …
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Polymer Surface Modification With Plasma Reaction For Materials Integration
… ammonia plasma. AMCA (7-amine-4-methyl coumarin hydrazide) was used to show that surface modification reaches a maximum functionalization before degradation of the polymer substrate occurs with water vapor. A parallel study with OPA (O-phthaldialdehyde) yielded similar results when ammonia was …
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Site-specific labeling of cellular proteins with unnatural substrates of biotin ligases
… analog, and then specifically conjugated to hydrazide- or hydroxylamine-functionalized molecules. We demonstrated this two-step protein labeling methodology on purified protein, in the context of mammalian cell lysate, and on epidermal growth factor receptor expressed on the surface of live …
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Synthesis and Structure Assignments of Novel Azolinone Ribonucleosides
… in the presence of acid. Addition of formic acid hydrazide to 2,3,5-tri-O-benzoylribofuranosyl isocyanate gave 1-formyl-4-(beta)-D-(2,3,5-tri-O-benzoyl-ribofuranosyl)semicarbazide, which gave 4-(beta)-D-(2,3,5-tri-O-benzoylribofuranosyl)-1,2,4-triazolin-3-one upon dehydrative silylation. Methyl …
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New methodology for the organocatalysed α-Amination reaction
… application to ketals, dioxolanes and lactols. A hydrazide N-N bond cleavage methodology was also developed for the aminated products in oxazolidinone form. This methodology is based on Magnus' alkylation / E1CB strategy. The novel contribution here is using ditheyl bromoacetate as an alkylating …
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Total Synthesis of Oligomeric Cyclotryptamine Alkaloids
… synthesis using increasingly complex oligomeric hydrazide nucleophiles and bifunctional cyclotryptamines bearing a C3a leaving group and a pendant C7 pronucleophile. The utility of our method is demonstrated by the first total synthesis of heptamer (+)-caledonine and hexamer (+)-oleoidine. …
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Thermochemistry and bond energies of acetohydrazide, amides and cyclic alkyl ethers
… and internal rotation potentials of Acetic Acid Hydrazide (CH_3CONHNH_2), Acetamide (CH_3CONH_2) and N-methyl Acetamide (CH3CONHCH3) and their radicals corresponding to loss of hydrogen atom have been studied. Gas phase standard enthalpies of formation and bond energies were calculated using the …
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Methodology studies on the synthesis of chiral, non-racemic aza-quaternary centres
… organocatalysis approach involving an ephedrine -hydrazide organocatalyst in conjunction with enantioselective amination methodology using an azodicarboxylate. Chapter Three shifts to a substrate -controlled approach based on using chiral malonate -imidazolidinones as a template for amination. …
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In-situ early detection of metal corrosion via "turn-on" fluorescence in "smart" epoxy coatings
… hydrolysis to fluorescent protonated Rhodamine B hydrazide, as the consequence of the local pH decrease at the anodic sites of both steel and aluminum corrosion (water is always present). The "turn-on" FD1 fluorescence was easily, non-destructively detected under UV light before any visible sign …
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The Effect of acetaminophen on isoniazid metabolism
… in overdose. Isoniazid (INH, isonicotinyl hydrazide), an antituberculous drug, also causes liver damage in some patients at therapeutic doses. The two medications are likely to be taken concurrently. Previously we reported that, depending on the condition, INH inhibits or induces the toxic …
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