"C1268874"^^ . . "Chemical Viewed Structurally"^^ . . "Amino_Acid_Derivative"^^ . "Amino Acid DerivativePTNCI" . "Amino Acid Derivative"^^ . "Amino Acid Derivative"^^ . "C73539"^^ . "Any derivatives of amino acids that containing amino (-NH2) and carboxyl (-COOH) groups.NCI" . "Amino Acid DerivativesSYNCI" .