SEARCH Articles Figures Tables 1 -[ -2-Amino-2-carboxy-ethyl 1- Amino-l-carboxy 2- Amino-5-[(2 -carboxy-6 -hydroxy 2-Amino-2-carboxy- -Hydrochlorid 3- Amino-3-carboxy-tetrahydroquinolines 4-Carboxy-5-amino triazoles N-Carboxy a-amino acid anhydrides NCAs) N-carboxy-a-amino acid anhydride Polymerization of N-carboxy-a-amino acid anhydrides Presence of Amino and Carboxy Groups Reactions of the Amino and Carboxy Groups Structure 2-amino-3-carboxy