for the following products
(S)-5-[(4-Amino-4-carboxy-1-oxobutyl)amino]-2-nitrobenzoic acid monoammonium salt | ?-GT | GLUPA-C | Glutamic acid 5-(3-carboxy-4-nitroanilide) ammonium salt | L-gamma-Glutamyl-3-carboxy-4-nitroanilide ammonium salt | L-Glutamic acid gamma-(3-carboxy-4-nitroanilide) ammonium salt | L-Glutamic acid-(3-carboxy-4-nitroanilide) ammonium salt and L-Glutamic acid-gamma-3-carboxy-4-nitroanilide ammonium salt, Reag.