Results 251 to 260 of about 18,771 (284)

Reaction of 3-amino-1:2:4-triazole with lactoperoxidase

Archives of Biochemistry and Biophysics, 1973
Bovine lactoperoxidase (LPO) gradually lost its enzymatic activity when dialyzed against a solution of 3-amino-1:2:4-triazole (AT) and hydrogen peroxide at pH 7.0. Amino acid analysis of the completely inactive enzyme revealed the formation of a new ninhydrin-positive chromatographic peak.
Joyce Young Chang, Walter A. Schroeder
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Synthesis of some nitro and amino derivatives of 1, 2, 4-triazole-5-thiones and 1, 2, 4-triazoles

Chemistry of Heterocyclic Compounds, 1967
Isomeric 3-(nitrophenyl)-1, 2, 4-triazole-5-thiones are synthesized by cyclizing 1-nitrobenzoylthiosemicarbazides. 1-(4-Nitrophenyl)-1, 2, 4-triazole-3-thione is prepared by condensing 4-(4-nitrophenyl) thiosemicarbazide with formic acid. Oxidation converts the triazolethiones to nitrophenyltriazoles, and the latter are reduced to aminophenyltriazoles.
D. E. Duka, G. I. Chipen, V. Ya. Grinshtein   +2 more
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Basicity and structure of 1, 2, 4-triazole derivatives

Chemistry of Heterocyclic Compounds, 1967
Basicity constants for a number of 1, 2, 4-triazole derivatives are determined. An assumed amine structure for 3-amino-1, 2, 4-triazoles in aqueous solution is demonstrated. It is assumed that protonization of 3- and 4-amino-1, 2, 4-triazoles occurs at the nitrogen in the heterocyclic ring, and not at the amino group.
M. S. Pevzner, V. A. Lopyrev, L. I. Bagal   +2 more
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Studies on amides and 1:2:4-Triazoles.

2023
No description ...
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Synthesis of 1, 2, 4-triazole benzoyl arylamine derivatives and their high antifungal activities

European Journal of Medicinal Chemistry, 2020
Two series of novel 1, 2, 4-triazole benzoyl arylamine derivatives were prepared and screened for their activities against three pathogens of Gaeumannomyces graminis var.tritici, Sclerotinia sclerotiorum and Fusarium graminearum using the mycelium growth inhibition method in vitro.
Li Honglian, Jiang Zhenhua, Cheng Yinan, Lian-Sheng Sun, Zhang Mengmeng, Su Ziyang   +5 more
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Toxicity of 3‐Amino‐1: 2: 4‐Triazole to Activated Sludge Biomass [PDF]

Toxicological & Environmental Chemistry, 1984
3‐amino‐1: 2: 4‐triazole (AT), a potent weed killer, added to activated sludge, caused immediate and drastic reduction in oxygen uptake by biomass. AT, a known specific inhibitor of catalases of animal and plant sources, did not appreciably alter catalase of activated sludge biomass.
Cynthia V. Sommer, Kasi V. Gabbita, Jerry Y.C. Huang   +2 more
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Inhibition of Cholinesterases by 1 : 2 : 4-Triazoles

Nature, 1955
IT has been repeatedly observed in my laboratory that workers, including non-smokers, manipulating 1 : 2 : 4-triazoles develop symptoms of light nicotine or physostigmine poisoning from time to time. Subsequent experiments have shown that some simple water-soluble 1 : 2 : 4-triazoles may act as inhibitors of cholinesterase activity.
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The preparation of N- and C-halogen derivatives of 1, 2, 4-triazole

Chemistry of Heterocyclic Compounds, 1972
The action of halogens in an alkaline medium on 1, 2, 4-triazoles has given their N-chloro, N-bromo, and N-iodo derivatives. The formation of C-halogen derivatives of some 1, 2, 4-triazoles from their N-halogen derivatives has been studied, and also the action of halogens on 1, 2, 4-triazoles at elevated temperatures.
A. A. Strazdin, V. Ya. Grinshtein
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The preparation of 3:5‐dimethyl‐1‐phenyl‐1:2:4‐triazole [PDF]

Journal of Applied Chemistry, 1952
AbstractOptimum conditions for the laboratory‐scale preparation of 3 : 5‐dimethyl‐1‐phenyl‐1 : 2 : 4‐triazole by the Einhorn‐Brunner method have been studied. The mechanism of the reaction is different from those involved in the triazole syntheses of Pellizzari and Kaiser.
J. B. Polya, A. A. Komzak
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Die Röntgenstrukturanalyse von 1, 2, 4‐Triazol

Berichte der Bunsengesellschaft für physikalische Chemie, 1965
AbstractDie Kristallstruktur von 1, 2, 4‐Triazol, C2N3H3, wurde durch dreidimensionale Analyse der Röntgenbeugungsdaten ermittelt. Die Kristalle sind rhombisch (Raumgruppe Pbca‐D152h) mit 8 Molekülen in der Elementarzelle. Die Gitterkonstanten haben die Werte: a = 9,69 ± 0,04 Å, b = 9,38 ± 0,04 Å, c = 7,14 ± 0,03 Å.
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