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CAS 98-35-1

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4-Amino-3-chlorobenzenesulfonic acid

Description:
4-Amino-3-chlorobenzenesulfonic acid, with the CAS number 98-35-1, is an aromatic sulfonic acid characterized by the presence of an amino group and a chlorine atom on a benzene ring that is also substituted with a sulfonic acid group. This compound typically appears as a white to light yellow crystalline solid and is soluble in water due to the sulfonic acid functional group, which enhances its polarity. It has applications in the dye industry, particularly in the synthesis of azo dyes, and serves as an intermediate in the production of various pharmaceuticals and agrochemicals. The presence of both the amino and sulfonic acid groups contributes to its reactivity, allowing it to participate in electrophilic substitution reactions. Additionally, it is important to handle this compound with care, as it may pose health risks if inhaled or ingested, and appropriate safety measures should be taken during its use in laboratory or industrial settings.
Formula:C6H6ClNO3S
InChI:InChI=1S/C6H6ClNO3S/c7-5-3-4(12(9,10)11)1-2-6(5)8/h1-3H,8H2,(H,9,10,11)
InChI key:InChIKey=NEECEUZBAHTVIN-UHFFFAOYSA-N
SMILES:S(=O)(=O)(O)C1=CC(Cl)=C(N)C=C1
Synonyms:
  • 2-Chloroaniline-4-sulfonic acid
  • 3-Chlorosulfanilic acid
  • 4-Amino-3-chlorobenzenesulfonic acid
  • Benzenesulfonic acid, 4-amino-3-chloro-
  • Nsc 59701
  • Sulfanilic acid, 3-chloro-
  • Sulfanilic acid, 3-chloro- (8CI)
  • 3-Chlorosulphanilic acid
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