4-acetamidobenzenesulfinic acid
5-acetylamino-2-(N-acetyl-sulfanilyl)-benzenesulfonic acid amide
2-(N-acetyl-sulfanilyl)-5-amino-benzenesulfonic acid amide
5-amino-2-sulfanilyl-benzenesulfonic acid amide
2-(N-acetyl-sulfanilyl)-5-nitro-benzenesulfonic acid amide