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CAS 22356-80-5

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2-Hydroxy-4-methylbenzenesulfonic acid

Description:
2-Hydroxy-4-methylbenzenesulfonic acid, also known as 4-Methyl-2-hydroxybenzenesulfonic acid, is an aromatic sulfonic acid characterized by the presence of both a hydroxyl group and a sulfonic acid group attached to a methyl-substituted benzene ring. This compound typically appears as a white to off-white crystalline solid and is soluble in water due to the polar nature of the sulfonic acid group. It has applications in various fields, including as a reagent in organic synthesis and as a pH indicator. The presence of the hydroxyl group contributes to its acidity and reactivity, allowing it to participate in various chemical reactions, such as sulfonation and esterification. Additionally, its structure makes it useful in the synthesis of dyes and pharmaceuticals. Safety data indicates that, like many sulfonic acids, it should be handled with care, as it can be corrosive and irritating to skin and eyes. Proper safety measures should be observed when working with this compound in a laboratory setting.
Formula:C7H8O4S
InChI:InChI=1S/C7H8O4S/c1-5-2-3-7(6(8)4-5)12(9,10)11/h2-4,8H,1H3,(H,9,10,11)
InChI key:InChIKey=GCFPFWRHYINTRX-UHFFFAOYSA-N
SMILES:S(=O)(=O)(O)C1=C(O)C=C(C)C=C1
Synonyms:
  • 2-Hydroxy-4-methylbenzenesulfonic acid
  • Benzenesulfonic acid, 2-hydroxy-4-methyl-
  • p-Toluenesulfonic acid, 2-hydroxy-
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