84993-80-6 BRN 5665116 Ester methylique de la O-(p-nitrobenzoate)-N-((chloro-2-ethyl)nitrosocarbamoyl)-L-serine ICIG 1703 L-N-((2-Chloroethyl)nitrosocarbamoyl)serine methyl ester p-nitrobenzoate (ester) PNB Ser CNU Serine, N-((2-chloroethyl)nitrosocarbamoyl)-, methyl ester, p-nitrobenzoate (ester), L-