Abstract
N-alkyl-N-(.omega.-carboxyalkyl)nitrosamines (14) related to N-butyl-N-(3-carboxypropyl)nitrosamine, principal urinary metabolite of a potent bladder carcinogen, N-butyl-N-(4-hydroxybutyl)nitrosamine, were prepared to characterize urinary metabolites and test their carcinogenic effects in rats. They were N-alkyl-N-(3-carboxypropyl)nitrosamines, N-alkyl-N-(2-carboxyethyl)nitrosamines, and N-alkyl-N-(carboxymethyl)nitrosamines. They were mostly prepared by the permanganate oxidation of the corresponding N-alkyl-N-(.omega.-hydroxyalkyl)nitrosamines.