both the formation of 7- ( 2-oxoethyl ) guanine by ethyl carbamate and vinyl carbamate , and the much higher activity of the latter compound , strongly support the existence of the metabolic activation pathway , ethyl carbamate -- -- vinyl carbamate -- -- epoxyethyl carbamate , as proposed by dahl et al .
C0041964
ethyl carbamate
C0006948
carbamate