Naphthalene-2-sulfonic acid

Naphthalene-2-sulfonic acid structural formula

CAS Number120-18-3
Molecular FormulaC10H8O3S
Molecular Weight208.230
  • Naphthalene-2-sulfonic acid
  • 2-Naphthalenesulfonic acid
  • 120-18-3
  • 2-Naphthalenesulfonic acid
  • 4-11-00-00527
  • 2-Naphthylsulfonic acid
  • 2-Sulfonaphthalene
  • Acide naphtalene-2-sulfonique
  • acido naftaleno-2-sulfonico
  • Dirinal NSK
  • naphthalene-2-sulphonic acid
  • Naphthalin-2-sulfonsaure
  • ?-Naphthalenesulfonic acid
  • ?-Naphthylsulfonic acid
  • BRN 1955756
  • EINECS 204-375-3
  • beta-Naphthalenesulfonic acid
  • beta-Naphthylsulfonic acid
  • Kyselina 2-naftalensulfonova
  • UNII-O9S4K2S25E
  • 54257-18-0


Separation of Naphthalene-2-sulfonic acid on Newcrom R1 HPLC column

February 16, 2018
Separation of Naphthalene-2-sulfonic acid on Newcrom C18 HPLC column

Naphthalene-2-sulfonic 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:
Naphthalene-2-sulfonic 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: or by phone: 847-229-2629.