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CAS 98-37-3

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3-Amino-4-hydroxybenzenesulfonic acid

Description:
3-Amino-4-hydroxybenzenesulfonic acid, also known as sulfanilic acid, is an organic compound characterized by the presence of an amino group (-NH2), a hydroxyl group (-OH), and a sulfonic acid group (-SO3H) attached to a benzene ring. This compound is typically a white to light yellow crystalline solid that is soluble in water, making it useful in various applications. It is primarily utilized as a reagent in the synthesis of azo dyes and as a pH indicator due to its ability to change color in response to pH variations. Additionally, sulfanilic acid plays a role in the production of certain pharmaceuticals and is involved in the preparation of various chemical compounds. Its structure allows for strong hydrogen bonding and interactions with other molecules, contributing to its reactivity. Safety considerations include handling it with care, as it may cause irritation to the skin and eyes. Overall, 3-amino-4-hydroxybenzenesulfonic acid is an important compound in both industrial and laboratory settings.
Formula:C6H7NO4S
InChI:InChI=1/C6H7NO4S/c7-5-3-4(12(9,10)11)1-2-6(5)8/h1-3,8H,7H2,(H,9,10,11)
InChI key:InChIKey=ULUIMLJNTCECJU-UHFFFAOYSA-N
SMILES:S(=O)(=O)(O)C1=CC(N)=C(O)C=C1
Synonyms:
  • 1-Amino-2-hydroxy-5-benzenesulfonic acid
  • 1-Hydroxy-2-aminobenzene-4-sulfonic acid
  • 1-Phenol-4-sulfonic acid, 2-amino-
  • 2-Amino-1-hydroxybenzene-4-sulphonic acid
  • 2-Amino-1-phenol-4-sulfonic acid
  • 2-Amino-4-sulfophenol
  • 2-Aminophenol 4-Sulfonic Acid
  • 2-Hydroxy-5-sulfoaniline
  • 3-Amino-4-hydroxybenzene-1-sulfonic acid
  • 3-Azaniumyl-4-hydroxybenzenesulfonate
  • See more synonyms
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