title: Letter: Gas phase carboxylate anions from N-acetyl-p-nitrobenzyl amino acid esters.
mesh_terms: D000596:Amino Acids; D002264:Carboxylic Acids; D055598:Chemical Phenomena; D002621:Chemistry; D013058:Mass Spectrometry; D009578:Nitrobenzenes
chemical_list: D000596:Amino Acids; D002264:Carboxylic Acids; D009578:Nitrobenzenes