N,O-Diacetyl-N-hydroxyurethan (CAS NO.2139-93-7) is also named as BRN 1911627 ; Diacetylhydroxyurethane ; N,O-Diacetyl-N-carboxyhydroxylamine ethyl ester ; Hydroxylamine, N,O-diacetyl-N-carboxy-, ethyl ester .