4-Aminobenzenesulfonic acid

4-Aminobenzenesulfonic acid structural formula

CAS Number121-57-3
Molecular FormulaC6H7NO3S
Molecular Weight173.191
  • 4-Aminobenzenesulfonic acid
  • 4-Aminobenzene-1-sulfonic acid
  • Benzenesulfonic acid, 4-amino-
  • 121-57-3
  • Sulfanilic acid
  • Benzenesulfonic acid, 4-amino-
  • 1-Aminobenzene-4-sulfonic acid
  • 4-Aminophenylsulfonic acid
  • 4-Sulfoaniline
  • Acide sulfanilique
  • acido sulfanilico
  • Aniline-4-sulfonic acid
  • Aniline-p-sulfonic acid
  • NSC 7170
  • p-Aminobenzenesulfonic acid
  • p-Aminophenylsulfonic acid
  • p-Sulfoaniline
  • Sulfanilsaure
  • sulphanilic acid
  • EINECS 204-482-5
  • Kyselina sulfanilova
  • UNII-434Z8C2635
  • 4-aminobesylic acid
  • 4-azanylbenzenesulfonic acid
  • Sulfanilsaeure
  • aniline-p-sulphonic acid
  • 856062-06-1


Separation of 4-Aminobenzenesulfonic acid on Newcrom R1 HPLC column

February 16, 2018
Separation of 4-Aminobenzenesulfonic acid on Newcrom C18 HPLC column

4-Aminobenzenesulfonic acid can be analyzed by this reverse phase (RP) HPLC method with simple conditions. The mobile phase contains an acetonitrile (MeCN), water, and phosphoric acid. For Mass-Spec (MS) compatible applications the phosphoric acid needs to be replaced with formic acid. Smaller 3 µm particles columns available for fast UPLC applications. This liquid chromatography method is scalable and can be used for isolation impurities in preparative separation. It also suitable for pharmacokinetics.

Application Column

Newcrom R1

The Newcrom columns are a family of reverse-phase-based columns. Newcrom A, AH, B, and BH are all mixed-mode columns with either positive or negative ion-pairing groups attached to either short (25 Å) or long (100 Å) ligand chains. Newcrom R1 is a special reverse-phase column with low silanol activity.

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Application Analytes:
4-Aminobenzenesulfonic acid
The result was obtained by a proprietary SIELC algorithm. It may deviate from the actual experimental data. The experimental data are available upon request. Contact us by e-mail: support@sielc.com or by phone: 847-229-2629.