CAS 133-78-8: 4-Amino-2-methylbenzenesulfonic acid

Description: 4-Amino-2-methylbenzenesulfonic acid, also known as toluidine-4-sulfonic acid, is an organic compound characterized by the presence of an amino group and a sulfonic acid group attached to a methyl-substituted benzene ring. Its molecular structure features a benzene ring with a methyl group at the ortho position relative to the amino group and a sulfonic acid group at the para position. This compound is typically a white to light yellow crystalline solid that is soluble in water due to the presence of the sulfonic acid group, which enhances its polarity. It is commonly used in various applications, including as a reagent in dye manufacturing, in analytical chemistry for pH indicators, and in biological research. The presence of both amino and sulfonic acid functional groups allows for versatile reactivity, making it useful in synthesizing other chemical compounds. Additionally, it is important to handle this substance with care, as it may pose health risks upon exposure.

Formula: C₇H₉NO₃S

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

InChI key: InChIKey=ZDIRCGKEOWZBIM-UHFFFAOYSA-N

SMILES: O=S(=O)(O)C1=CC=C(N)C=C1C

Synonyms:

• 2-Methylsulfanilic acid
• 3-Aminotoluene-6-sulfonic acid
• 4-Amino-2-Methylbenzenesulfonic Acid
• 4-Amino-o-toluenesulfonic acid
• 5-Aminotoluene-2-sulfonic acid
• Benzenesulfonic acid, 4-amino-2-methyl-
• Toluidinesulfonicacid
• o-Toluenesulfonic acid, 4-amino-

m-Toluidine-4-sulfonic Acid

CAS: 133-78-8

• Formula: C₇H₉NO₃S
• Purity: >95.0%(T)
• Color and Shape: White to Gray to Brown powder to crystal
• Molecular weight: 187.21

Benzenesulfonic acid, 4-amino-2-methyl-

CAS: 133-78-8

• Formula: C₇H₉NO₃S
• Purity: 95%
• Molecular weight: 187.2163

4-Amino-2-methylbenzenesulfonic acid

CAS: 133-78-8

• Purity: 95%
• Molecular weight: 187.2100067138672

m-Toluidine-4-sulfonic Acid

CAS: 133-78-8

m-Toluidine-4-sulfonic acid is a colorless crystalline solid that is soluble in water. It has an …

• Formula: C₇H₉NO₃S
• Purity: Min. 95%
• Molecular weight: 187.21 g/mol