80687-31-6 BRN 5558691 L-Serine, N-(((2-chloroethyl)nitrosoamino)carbonyl)- N-((2-Chloroethyl)nitrosocarbamoyl)-L-serine N-(Chloro-2 ethyl)-N-nitrosocarbamyl-L-serine [French] Serine, N-((2-chloroethyl)nitrosocarbamoyl)-, L-