2-Methyl-5-nitrobenzenesulfonyl chloride
2-Methyl-5-nitrobenzenesulfonyl chloride (CAS: 121-02-8), with the molecular formula C7H6ClNO4S and a molecular weight of 235.64 g/mol, is a reactive organic compound. It serves as a valuable building block in chemical synthesis, particularly within organic chemistry research and development. Its sulfonyl chloride functionality makes it useful for introducing the 2-methyl-5-nitrobenzenesulfonyl group into various organic molecules. This compound is typically supplied at a purity of 97%.

Organic Synthesis Intermediate
This sulfonyl chloride is a key intermediate in the synthesis of complex organic molecules. It enables the introduction of the 2-methyl-5-nitrobenzenesulfonyl moiety, which can be further modified or incorporated into target structures in pharmaceutical and agrochemical research.
Building Block for Specialty Chemicals
As a versatile building block, 2-Methyl-5-nitrobenzenesulfonyl chloride is employed in the development of novel materials and specialty chemicals. Its specific functional groups allow for targeted reactions in multi-step synthetic pathways.
Reagent in Chemical Research
Researchers utilise this compound in laboratory settings for various synthetic transformations. Its predictable reactivity contributes to its utility in exploring new chemical reactions and developing novel compounds.
| Molecular weight | 235.64 |
|---|---|
| Empirical formula | C7H6ClNO4S |
| Assay | 97% |
| Boiling point | 135-137 °C/0.7 mmHg |
| Melting point | 41-45 °C |

Hazard statements
- H314Causes severe skin burns and eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Flash point | >110 °C / >230 °F |
| Transport (UN / ADR) | UN 3261 8 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | C |
| Risk statements (R) | 34 |
| Safety statements (S) | 26-36/37/39-45 |
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 2-Methyl-5-nitrobenzenesulfonyl chloride used for?
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2-Methyl-5-nitrobenzenesulfonyl chloride is primarily used as a building block and intermediate in organic synthesis and chemical research.
What is the CAS number and formula for 2-Methyl-5-nitrobenzenesulfonyl chloride?
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The CAS number is 121-02-8, and the empirical formula (Hill notation) is C7H6ClNO4S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2-Methyl-5-nitrobenzenesulfonyl chloride at an assay of 97%. We do not represent this product as USP, BP, or EP grade.
How should 2-Methyl-5-nitrobenzenesulfonyl chloride be handled?
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This compound is classified as corrosive (H314) and requires strict adherence to safety protocols. Recommended personal protective equipment includes eyeshields, face shields, chemical-resistant gloves, and appropriate respiratory protection. Handle only in well-ventilated areas and avoid contact with skin and eyes. Refer to the Safety Data Sheet for detailed handling instructions.
How is 2-Methyl-5-nitrobenzenesulfonyl chloride shipped and exported?
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2-Methyl-5-nitrobenzenesulfonyl chloride is shipped and exported in compliance with international regulations for hazardous materials, specifically as UN 3261, Class 8, Packing Group III.
How can I request a quote or sample?
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To request a quote or sample of 2-Methyl-5-nitrobenzenesulfonyl chloride, please contact our sales team through the TSS website or direct inquiry channels.
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