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- W2078564438 abstract "N-Methyl-N-2-oxopropylnitrosamine (MOP) induces pancreatic tumors in hamsters. As models for the putative proximate carcinogenic α-hydroxy derivatives, we studied N-acetoxymethyl-N-2-oxopropylnitrosamine (AMOP) and N-methyl-N-(1-acetoxy-2-oxopropyl)nitrosamine (MAOP). AMOP was synthesized from aminoacetone by the method of Roller et al. ((1975), Tetrahedron Lett., 25, 2065–2068) and MAOP was synthesized by acetoxylation of MOP with lead tetraacetate. The half-lives of AMOP, MAOP and acetoxymethylmethylnitrosamine (ADMN) in aqueous buffer decreased as the pH rose from 5 to 9, with values at pH 5 of 2.8 × 104 min for AMOP, 3.2 × 103 min for ADMN, and 23 min for MAOP. Mutagenicity was examined in Salmonella typhimurium TA1535, using a pre-incubation at pH 5 without microsomal activation. The mutagenic potency, expressed as revertants/μmole, was 56 for AMOP, 150 for ADMN, and 4.5 × 104 for MAOP. Hence, hydrolysis rates at pH 5 were probably important in determining the relative mutagenicity." @default.
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- W2078564438 date "1987-09-01" @default.
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- W2078564438 title "Alpha-acetoxy derivatives of methyl-2-oxopropylnitrosamine: Synthesis, hydrolysis rate and bacterial mutagenicity" @default.
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- W2078564438 doi "https://doi.org/10.1016/0304-3835(87)90026-7" @default.
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