o-Toluenesulfonamide
o-Toluenesulfonamide (CAS: 88-19-7), with the molecular formula CH3C6H4SO2NH2 and a molecular weight of 171.22 g/mol, is a chemical compound utilised in various synthetic organic chemistry applications. As a sulfonamide derivative, it serves as a valuable intermediate and building block in the synthesis of more complex molecules. Tech Serve Solutions supplies this compound for research and industrial purposes, adhering to strict quality controls.

Organic Synthesis Intermediate
o-Toluenesulfonamide functions as a key intermediate in the synthesis of various organic compounds. Its sulfonamide group can participate in numerous chemical transformations, making it versatile for constructing complex molecular architectures.
Building Block for Specialty Chemicals
This compound acts as a fundamental building block in the production of specialty chemicals. It is employed in reactions where the introduction of the o-toluenesulfonyl moiety is required.
Research and Development
Used in academic and industrial research laboratories, o-Toluenesulfonamide aids in exploring new synthetic pathways and developing novel materials. Its availability facilitates experiments in heterocyclic chemistry and medicinal chemistry.
| Molecular weight | 171.22 |
|---|---|
| Linear formula | CH3C6H4SO2NH2 |
| Assay | 99% |
| Melting point | 156-158 °C(lit.) |


Hazard statements
- H319Causes serious eye irritation
- H351Suspected of causing cancer
Precautionary statements
- P281Use personal protective equipment as required
- P305IF IN EYES
| Protective equipment | Eyeshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 36-40 |
| Safety statements (S) | 26 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is o-Toluenesulfonamide used for?
+
o-Toluenesulfonamide is primarily used as an intermediate and building block in organic synthesis and for research and development purposes in chemical laboratories.
What is the CAS number and formula for o-Toluenesulfonamide?
+
The CAS number for o-Toluenesulfonamide is 88-19-7, and its molecular formula is CH3C6H4SO2NH2.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies o-Toluenesulfonamide with an assay of 99%. We do not represent this product as meeting USP, BP, or EP pharmacopoeia standards.
How should o-Toluenesulfonamide be handled safely?
+
o-Toluenesulfonamide is classified with GHS07 and GHS08 symbols, with a warning signal word. It carries hazard statements H319 (causes serious eye irritation) and H351 (suspected of causing cancer). Appropriate personal protective equipment, including eyeshields, gloves, and respiratory protection (type N100 or P3 filters), must be used. Handle in a well-ventilated area and avoid dust formation.
Is o-Toluenesulfonamide a controlled substance?
+
The provided data does not indicate that o-Toluenesulfonamide is a controlled substance.
How is o-Toluenesulfonamide packed and exported?
+
o-Toluenesulfonamide is carefully packed to maintain its integrity during transit and is available for global export by Tech Serve Solutions.
How can I request a sample or quote for o-Toluenesulfonamide?
+
To request a sample or a quotation for o-Toluenesulfonamide, please contact our sales department through the website or by telephone.
▶ Related products

1-(2-Fluorobenzyl)piperazine
C11H15FN2
Chemical Synthesis
1-(2-Fluorophenyl)biguanide hydrochloride
Chemical Synthesis

1-(2-Fluorophenyl)cyclopropanecarboxylic acid
C10H9FO2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine
C10H13FN2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine monohydrochloride
C10H13FN2 · HCl
Chemical Synthesis
1-(2-Furoyl)-1H-benzotriazole
C11H7N3O2
Chemical Synthesis
1-(2-Furoyl)piperazine
C9H12N2O2
Chemical Synthesis
1-(2-Hydroxy-5-methylphenyl)-3-phenyl-1,3-propanedione
Chemical Synthesis
▶ Explore more

3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis

3-Methyl-1,5-pentanediol
Chemical Synthesis

3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis