84993-78-2 ACO Ser CNU BRN 5582070 Ester methylique de la O-(acetate)-N-((chloro-2-ethyl)nitrosocarbamoyl)-L-serine ICIG 1773 L-N-((2-Chloroethyl)nitrosocarbamoyl)serine methyl ester acetate (ester) Serine, N-((2-chloroethyl)nitrosocarbamoyl)-, methyl ester, acetate (ester), L-