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6-Amino-4-hydroxy-2-naphthalenesulfonic acid

1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid

1-Acetylimidazole

N-Acetyl-3-hydroxyindole

N-Acetylglycine

N-Acetyl-L-glutamine

N-Acetyl-D-glutamic acid

N-Acetyl-L-glutamic acid

N-Acetyl-D-galactosamine