Results 181 to 190 of about 13,188 (213)
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ChemInform Abstract: ALKYLATION OF α‐ACETOXY‐N‐NITROSAMINES‐ MODELS FOR N‐NITROSAMINE METABOLITES
Chemischer Informationsdienst, 1978AbstractDie unterschiedliche pharmakologische Wirkung der isomeren Nitroso‐Verbindungen (I) und (V) wird durch die unterschiedliche Alkylierungstendenz erklärt.
P. L. SKIPPER +3 more
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Synthesis of nitroalkyl-N-nitrosamines
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science, 19711. Nitroalkylamines of variable structure were nitrosated by nitrous acid and its chloro- and fluoro-derivatives. On the example of 1,1,1,6,6,6-hexanitro-3-azapentane it was shown that weakly basic amines do not react with ClNO in nonpolar organic solvents. 2.
R. G. Gafurov +2 more
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Flüchtige N-Nitrosamine in Biermischgetränken
Bundesgesundheitsblatt, 1998Die Gehalte an fluchtigen N-Nitrosaminen lagen bei allen untersuchten Proben (funf Cola-Limonaden, 15 Biere, 17 selbst hergestellte Cola-Bier-Mischungen, 13 Handels-produkte wie z. B. Cola-Weizen, Radler/Alsterwasser) unter 0,3 μg/kg und damit unter dem technisch einhaltbaren Hochstwert fur Bier (0,5 μg/kg).
G. Fritz +3 more
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Occupational medicine (Philadelphia, Pa.), 2000
Nitrosamines are a large group of chemical compounds that have been found to be carcinogenic in all species of animals tested. They are classified as suspect human carcinogens even though direct causal evidence is lacking. This chapter reviews the nomenclature, chemistry, physical properties, exposure sources, toxicology, epidemiology, analytical ...
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Nitrosamines are a large group of chemical compounds that have been found to be carcinogenic in all species of animals tested. They are classified as suspect human carcinogens even though direct causal evidence is lacking. This chapter reviews the nomenclature, chemistry, physical properties, exposure sources, toxicology, epidemiology, analytical ...
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N-Nitrosamines from carbamoyl chlorides
Tetrahedron Letters, 1979Abstract The action of sodium nitrite on disubstituted carbamoyl chlorides provides the corresponding N-nitrosamines in excellent yields.
Masayuki Nakajima, Jean-Pierre Anselme
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1991
Abstract Microbial nitrate reduction is the principal route of N-nitrosamine formation in brewing. However, little consideration has been given to how different groups of microorganisms possessing different mechanisms of nitrate reduction influence N-nitrosamine levels.
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Abstract Microbial nitrate reduction is the principal route of N-nitrosamine formation in brewing. However, little consideration has been given to how different groups of microorganisms possessing different mechanisms of nitrate reduction influence N-nitrosamine levels.
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N-nitrosamines in grass silages.
IARC scientific publications, 1983During the fermentation of silages from nitrate-rich grass, the conditions are suitable for the formation of N-nitrosamines. Earlier investigations had shown that only low concentrations of volatile N-nitrosamines were formed. The first ten days of ensilage were investigated.
L W, Van Broekhoven, J A, Davies
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N-nitrosamine formation by macrophages.
IARC scientific publications, 1988Nitrate biosynthesis is a known mammalian process, and macrophages from mice treated with Escherichia coli lipopolysaccharide (LPS) have been shown to be capable of nitrate synthesis. Cell culture studies showed that macrophages produce nitrite as well as nitrate. We report here N-nitrosamine formation by stimulated macrophages.
M, Miwa +4 more
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Alkylation by α-acetoxy-n-nitrosamines: models for n-nitrosamine metabolites
Tetrahedron Letters, 1977Paul L. Skipper +3 more
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