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CAS 119-79-9

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5-Amino-2-naphthalenesulfonic acid

Description:
5-Amino-2-naphthalenesulfonic acid, with the CAS number 119-79-9, is an organic compound characterized by its naphthalene structure substituted with an amino group and a sulfonic acid group. This compound appears as a solid, typically in a crystalline form, and is soluble in water due to the presence of the sulfonic acid group, which enhances its polarity. It is commonly used as a dye intermediate and in the synthesis of various azo dyes, owing to its ability to undergo electrophilic substitution reactions. The amino group provides basic properties, while the sulfonic acid group imparts acidic characteristics, making it a zwitterionic compound in certain pH ranges. Additionally, 5-amino-2-naphthalenesulfonic acid is known for its role in biochemical applications, particularly in the development of colorimetric assays and as a reagent in analytical chemistry. Safety data indicates that it should be handled with care, as it may cause irritation upon contact with skin or eyes.
Formula:C10H9NO3S
InChI:InChI=1S/C10H9NO3S/c11-10-3-1-2-7-6-8(15(12,13)14)4-5-9(7)10/h1-6H,11H2,(H,12,13,14)
InChI key:InChIKey=UWPJYQYRSWYIGZ-UHFFFAOYSA-N
SMILES:NC=1C2=C(C=C(S(=O)(=O)O)C=C2)C=CC1
Synonyms:
  • (5Or8)-Aminonaphthalene-2-Sulphonic Acid
  • 1,6-Cleaves Acid
  • 1,6-Cleve's acid
  • 1,6-Cleves Acid
  • 1-Amino-6-naphthalenesulfonic acid
  • 1-Amino-6-sulfonaphthalene
  • 1-Aminonaphthalene-6-Sulfonic Acid
  • 1-Naphthylamine-6-Sulfonic Acid
  • 1-Naphthylamine-6-sulphonic acid
  • 2-Naphthalenesulfonic acid, 5-amino-
  • See more synonyms
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