Results 191 to 200 of about 574,787 (253)

Degradation Kinetics of Tolrestat

Journal of Pharmaceutical Sciences, 1990
Under stressed conditions, hydrolysis of the trifluoromethyl moiety of tolrestat (1) to the dicarboxylic acid analogue (2) is the major degradation pathway in solution; greater than C = S bond hydrolysis of the thioamide moiety with formation of the oxo analogue (3) is the major solid-state degradation pathway.
Y J, Lee, H K, Lee
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Kinetics of Degradation of Glutethimide

Journal of Pharmaceutical Sciences, 1968
The hydrolysis of glutethimide (2-ethyl-2-phenyl-glutarimide) in buffered aqueous solutions in the pH range 1.5—8.0 has been studied. This region exhibited specific base catalysis. The overall rate may be expressed by the equation, rate = k ' (glutethimide) at constant pH.
J W, Wesolowski, S M, Blaug, T F, Chin, J L, Lach   +3 more
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KINETICS OF TRITHIONATE DEGRADATION

Canadian Metallurgical Quarterly, 2006
Abstract Thiosulfate has shown promise as an alternative to cyanide for gold leaching. However, one of the limitations is high thiosulfate consumption. Thiosulfate degradation is not completely understood. Of the degradation products, trithionate is a concern in the resin recovery of gold and is persistent in solution.
N. AHERN, D. DREISINGER, G. VAN WEERT
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Kinetics of polymer degradation

Macromolecules, 1986
Equations cinetiques pour trouver des solutions explicites aux modeles discrets et en continu de fragmentation pour deux classes de modeles de probabilite de scission ...
Robert M. Ziff, E. D. McGrady
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Degradation Kinetics of Diltiazem

Drug Development and Industrial Pharmacy, 1990
AbstractThe kinetics of degradation of diltiazem hydrochloride in aqueous buffered solutions (pH 1-7) were studied. Diltiazem was found to undergo hydrolysis to desacetyldiltiazem. The decomposition of diltiazem followed pseudo-first order kinetics under the experimental conditions.
M. S. Suleiman, M. E. Abdulhameed, N. M. Najib, H. Y. Muti   +3 more
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Degradation of ofloxacin by potassium ferrate: kinetics and degradation pathways

Environmental Science and Pollution Research, 2022
Drug residues, including various antibiotics, are being increasingly detected in aqueous environments. Ofloxacin (OFX) is one such antibiotic that is widely used in the treatment of several bacterial infections; however, chronic exposure to this antibiotic can have adverse impacts on human health.
Yanghan, Chen, Qiuye, Jin, Zhaomin, Tang
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Degradation kinetics of polyol

Journal of Propulsion and Power, 1989
The degradation kinetics of Isro-Polyol, a propellaiit binder, were studied by dynamic thermogravimetry at different heating rates in nitrogen atmosphere. The experimental data indicate polyol decomposition follows a three-step reaction mechanism. The order of reaction for each step was calculated using a differential method and an integral method. The
Hans Raj, Dhirendra Nigam, G. N. Mathur
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Kinetics of Contaminant Degradation by Permanganate

Environmental Science & Technology, 2005
To provide a more complete understanding of the kinetics of in situ chemical oxidation (ISCO) with permanganate (MnO4-), we measured the kinetics of oxidation of 24 contaminants-many for which data were not previously available. The new data reported here were determined using an efficient method based on continuous measurement of the MnO4 ...
Rachel H, Waldemer, Paul G, Tratnyek
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