Results 171 to 180 of about 6,501 (215)
Applied Physics A Solids and Surfaces, 1992 Semicarbazide hydrochloride (SEM.HCl) was reported to be a prototype of another possible family of ferroelectrics [Appl. Phys. Lett. 20, 49 (1972)]. The present dielectric, resistivity, thermal and infrared absorption studies carried out on SEM.HCl and SEM.HBr do not confirm this suggestion.
Srinivasan, MR, Bhat, HL, Narayanan, PS
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Semicarbazide Formation in Flour and Bread
Journal of Agricultural and Food Chemistry, 2008Azodicarbonamide, an approved food additive, is commonly used as a flour additive and dough conditioner in the United States and Canada. A number of researchers have clearly established a link between the use of azodicarbonamide and semicarbazide contamination in commercial bread products.
Gregory O Noonan, Gregory W Diachenko
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Semicarbazide in Canadian bakery products
Food Additives and Contaminants, 2006Levels of semicarbazide were determined by liquid chromatography-tandem mass spectrometry using isotope dilution ((13)C(15)N(2)-semicarbazide) methodology, and they were measured, after hydrolysis in 0.125 M hydrochloric acid and derivatization with 2-nitrobenzaldehyde, as a sum of free and bound semicarbazide.
B P -Y Lau
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, 1951 1. Mesityl urea has been prepared and used for the successful preparation of mesityl-semicarbazide. 2. A number of aldehydes and ketones have been characterised with mesityl-semicarbozide. 3. An examination has been made of the effect of basicity of certain primary amines on their reactivity with nitrourea. 4.
Watts, T. W.
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The embryotoxic and osteolathyrogenic effects of semicarbazide
Toxicology, 1985The osteolathyrogenic agent semicarbazide was assayed for its toxicity and teratogenicity using early embryos of the frog Xenopus laevis. The 96-h LC50 is 1504.20 mg/l while the 96-h EC50 is 76.28 mg/l. Embryo length is altered prior to the onset of other effects indicated by a reduction in stage of development.
J N Dumont +2 more
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Food Additives and Contaminants, 2004
Nitrofuran antibiotics were previously used in animal healthcare but are now prohibited. Semicarbazide is a breakdown product of 5-nitrofurazone and protein-bound semicarbazide is used as a marker residue for the illegal use of 5-nitrofurazone. However, the presence of the prohibited semicarbazide has been reported in some food items of animal origin ...
K Peltonen
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Nitrofuran antibiotics were previously used in animal healthcare but are now prohibited. Semicarbazide is a breakdown product of 5-nitrofurazone and protein-bound semicarbazide is used as a marker residue for the illegal use of 5-nitrofurazone. However, the presence of the prohibited semicarbazide has been reported in some food items of animal origin ...
K Peltonen
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Potentiation of the Action of Histamine by Semicarbazide
Nature, 1951ZELLER1 has shown that semicarbazide inhibits histaminase. We have found that this substance, added to Tyrode solution, potentiates the action of histamine on the guinea pig's ileum. The lowest concentration at which semicarbazide clearly potentiates histamine is of the order of 10−9.
J L, MONGAR, H O, SCHILD
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Recueil des Travaux Chimiques des Pays-Bas, 1943
AbstractSemicarbazide is the common but incorrect name for carbamic acid hydrazide: magnified imageThe atom are numbered as indicated.Semicarbazide reacts readily with aldehydes and ketones, and this reaction is often used to separate those compounds from mixtures or to identify them.
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AbstractSemicarbazide is the common but incorrect name for carbamic acid hydrazide: magnified imageThe atom are numbered as indicated.Semicarbazide reacts readily with aldehydes and ketones, and this reaction is often used to separate those compounds from mixtures or to identify them.
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Komplexverbindungen der Semicarbazide
Zeitschrift für anorganische und allgemeine Chemie, 1936AbstractDie Semicarbazide bilden Komplexverbindungen, in welchen sie zwei Koordinationsstellen besetzen. Das Metall ist an das Sauerstoffatom und die Hydrazingruppe gebunden. Von Nickel wurden außer Verbindungen von den Typen [NiSem2] und [NiSem3]X3 auch rote, innerkomplexe Verbindungen erhalten, welche sich von dem Semicarbazid durch Ersatz eines ...
K. A. Jensen, E. Rancke‐Madsen
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Synthesis and cyclisation of 1,4-disubstituted semicarbazides
Natural Product Research, 2010Semicarbazides, besides possessing medicinal properties, also find wide applications in agriculture and industry. We report in this article the synthesis of the four 1,4-disubstituted semicarbazides: 1-cinnamoyl-4-phenyl semicarbazide (1), 1-oleyl-4-phenyl semicarbazides (2), 1,1',1''-tricitryl-4,4',4''-triphenyl semicarbazide (3) and 1-benzoyl-4 ...
Syeda Farina Asghar +3 more
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