A method is described for the preparation of 13N-labeled N-nitrosoureas, specifically 1-(2-chloroethyl)-3-cyclohexyl-1-nitrosourea. The 13N is generated as ammonia by the 12C(d,n)13N reaction on methane gas. The product is selectively trapped and subsequently oxidized to nitrous acid which reacts with the parent urea in solution to form the 13N-labeled nitrosourea.
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| http://dx.doi.org/10.1021/jm00244a017 | DOI Listing |
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