CAS 121-03-9

2-Methyl-5-nitrobenzenesulfonic acid

Description:

2-Methyl-5-nitrobenzenesulfonic acid, with the CAS number 121-03-9, is an aromatic sulfonic acid characterized by the presence of a sulfonic acid group (-SO3H) attached to a benzene ring that also features a methyl group and a nitro group. This compound typically appears as a yellow to brown solid and is soluble in water due to the polar nature of the sulfonic acid group. It exhibits acidic properties, which can influence its reactivity and interactions in various chemical processes. The presence of both the nitro and sulfonic acid groups makes it a useful intermediate in organic synthesis, particularly in the production of dyes, pharmaceuticals, and agrochemicals. Additionally, its structure allows for electrophilic substitution reactions, making it a versatile compound in synthetic organic chemistry. Safety precautions should be taken when handling this substance, as it may pose health risks, including irritation to the skin and eyes.

Formula: C₇H₇NO₅S

InChI: InChI=1S/C7H7NO5S/c1-5-2-3-6(8(9)10)4-7(5)14(11,12)13/h2-4H,1H3,(H,11,12,13)

InChI key: InChIKey=ZDTXQHVBLWYPHS-UHFFFAOYSA-N

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

Synonyms:

• 2-Methyl-4-Nitrobenzenesulfonic Acid
• 2-Methyl-5-nitrobenzenesulfonic acid
• 4-Nitro-2-toluenesulfonic acid
• 4-Nitrotoluene-2-sulfonic acid
• 5-Nitro-2-methylbenzenesulfonic acid
• 5-Nitro-o-toluenesulfonic acid
• Benzenesulfonic acid, 2-methyl-5-nitro-
• NSC 9580
• Pntos
• o-Toluenesulfonic acid, 5-nitro-
• p-Nitrotoluene-o-sulfonic acid

2-Methyl-5-nitrobenzenesulfonic acid

CAS: 121-03-9

Formula: C₇H₇NO₅S

Purity: 82%

Color and Shape: Solid

Molecular weight: 217.1992

Ref: IN-DA003B96

4-Nitrotoluene-2-Sulfonic Acid

CAS: 121-03-9

4-Nitrotoluene-2-Sulfonic Acid

Purity: 98%

Molecular weight: 217.21g/mol

Ref: 54-OR1024518

4-Nitrotoluene-2-sulfonic Acid

CAS: 121-03-9

Formula: C₇H₇NO₅S

Purity: >85.0%(T)

Color and Shape: White to Brown powder to crystal

Molecular weight: 217.20

Ref: 3B-N0277

5-Nitro-o-toluenesulfonic Acid

Controlled Product

CAS: 121-03-9

Applications 5-Nitro-o-toluenesulfonic Acid is a precursor to 4,4'-dinitrostilbene-2,2'-disulfonic acid in fluorescent whitener.
References Barek, J., Berka, A., Jakubec, K. Microchemical J., 25, 421 (1980)

Formula: C₇H₇NO₅S

Color and Shape: Neat

Molecular weight: 217.20

Ref: TR-N572320

p-Nitrotoluene-o-sulfonic acid

CAS: 121-03-9

Purity: 82%;RG

Molecular weight: 217.1999969

Ref: 10-F790152