2-Methyl-2-propyl-1,3-propanediol N,N'-bis(carboxymethyl)dicarbamate monoammonium salt 25648-81-1 Glycine, N-carboxy-, N,N'-(2-methyl-2-propyltrimethylene) ester, monoammonium salt N-Carboxyglycine N,N'-(2-methyl-2-propyltrimethylene) ester monoammonium salt