because n-nitrosodiethylamine requires enzymatic activation to form the ultimate carcinogen , it is suggested that the observed inhibition of nitrosamine-transforming enzymes in the liver during dsf treatment leads to an increased amount of intact nitrosamines in other organs , e.g. , in the esophagus , where it could be transformed to the ultimate carcinogen .
C0012200
n-nitrosodiethylamine
C0028197
nitrosamines