CAS 98-33-9

4-Amino-3-methylbenzenesulfonic acid

Description:

4-Amino-3-methylbenzenesulfonic acid, also known as p-toluenesulfonic acid, is an organic compound characterized by the presence of an amino group (-NH2) and a sulfonic acid group (-SO3H) attached to a benzene ring that also has a methyl group (-CH3) in the para position relative to the amino group. This compound is a white to light yellow crystalline solid that is soluble in water and exhibits acidic properties due to the sulfonic acid group. It is commonly used as a reagent in organic synthesis, particularly in the preparation of dyes and pharmaceuticals. The amino group allows for further functionalization, making it a versatile intermediate in chemical reactions. Additionally, it can act as a catalyst in various chemical processes. Safety considerations include handling it with care, as it can be an irritant to skin and eyes. Overall, 4-amino-3-methylbenzenesulfonic acid is an important compound in both industrial and laboratory settings.

Formula: C₇H₉NO₃S

InChI: InChI=1/C7H9NO3S/c1-5-4-6(12(9,10)11)2-3-7(5)8/h2-4H,8H2,1H3,(H,9,10,11)/p-1

InChI key: InChIKey=WQTCZINVPXJNEL-UHFFFAOYSA-N

SMILES: S(=O)(=O)(O)C1=CC(C)=C(N)C=C1

Synonyms:

• 2-Amino-5-toluenesulfonic acid
• 2-Methyl-4-sulfoaniline
• 2-Methylaniline-4-sulfonic acid
• 4-Amino-3-Methylbenzenesulfonate
• 4-Amino-3-methylbenzenesulfonic acid
• 4-Amino-m-toluenesulfonic acid
• 6-Aminotoluene-3-sulfonic acid
• Benzenesulfonic acid, 4-amino-3-methyl-
• NSC 7545
• m-Toluenesulfonic acid, 4-amino-
• o-Toluidine-4-sulfonic acid(NH2=1)
• 2-Amino-5-sulfotoluene
• 2-AMINOTOLUENE-5-SULFONIC ACID
• 4-Amino-3-methylbenzene-1-sulfonic acid
• 2-AMINOTOLUENE-5-SULFONIC ACID 97%
• 3-methylsulphanilic acid
• o-Toluidine-4-sulfonic acid
• ORTHO TOLUIDINE META SULFO NIC ACID (OTMSA)
• 4-Amino-3-methyl-1-sulfobenzene
• OTS
• 2-TOLUIDINE-5-SULFONIC ACID
• 3-Methyl-4-aminobenzene-1-sulfonic acid
• 4-amino-3-methyl-benzenesulfonicaci

Benzenesulfonic acid, 4-amino-3-methyl-

CAS: 98-33-9

Formula: C₇H₉NO₃S

Purity: 96%

Color and Shape: Solid

Molecular weight: 187.2163

Ref: IN-DA00IK06

4-Amino-3-methylbenzenesulphonic acid

CAS: 98-33-9

4-Amino-3-methylbenzenesulphonic acid

Formula: C₇H₉NO₃S

Purity: ≥95%

Color and Shape: faint beige to faint red/orange powder

Molecular weight: 187.22g/mol

Ref: 54-OR40300

2-AMINOTOLUENE-5-SULFONIC ACID

CAS: 98-33-9

Purity: 96%

Molecular weight: 187.2100067

Ref: 10-F849469

4-Amino-3-methylbenzenesulfonic acid

CAS: 98-33-9

4-Amino-3-methylbenzenesulfonic acid is a sulfonation agent that is used to prepare sulfonic acids from amines. It is also used in the analysis of chlorinated aromatic compounds, such as 2-chloro-6-methylaniline, and can be used as an analytical reagent for determining functional groups. The reaction is carried out with hydrochloric acid and water vapor. 4-Amino-3-methylbenzenesulfonic acid can be prepared by diazotization of 2,4-dinitrochlorobenzene with sodium nitrite followed by hydrolysis with sodium hydroxide. 4-Amino-3-methylbenzenesulfonic acid reacts selectively with chloride ions and nitro compounds to form corresponding salts.

Formula: C₇H₉NO₃S

Purity: Min. 95%

Molecular weight: 187.22 g/mol

Ref: 3D-AAA09833