4-Sulfamoylbutyric acid
4-Sulfamoylbutyric acid (CAS 175476-52-5), with the linear formula NH₂SO₂CH₂CH₂CH₂COOH and a molecular weight of 167.18 g/mol, is a bifunctional organic compound. It contains both a sulfonamide and a carboxylic acid group, making it a versatile building block. This chemical is primarily utilised in organic synthesis and chemical biology research as a linker or crosslinker.
- IUPAC
- 3-Carboxypropanesulfonamide

Organic Synthesis
As a building block, 4-Sulfamoylbutyric acid facilitates the introduction of both sulfonamide and carboxylic acid functionalities into target molecules. Its bifunctional nature allows for diverse synthetic strategies in the construction of complex organic structures.
Chemical Biology
This compound serves as a valuable linker or crosslinker in chemical biology applications. It can be used to conjugate molecules or modify biomolecules, enabling the study of biological processes or the development of new probes.
Research and Development
4-Sulfamoylbutyric acid is employed in academic and industrial research laboratories for exploring new synthetic routes and developing novel chemical entities. Its unique structure supports a range of chemical transformations.
| Molecular weight | 167.18 |
|---|---|
| Linear formula | NH2S(=O)2CH2CH2CH2COOH |
| Assay | ≥90% (T) |
| Grade | technical |
| Impurities tested | ≤5% water |
| Melting point | ~90 °C (dec.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
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 4-Sulfamoylbutyric acid used for?
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4-Sulfamoylbutyric acid is primarily used as a bifunctional linker or crosslinker in organic synthesis and chemical biology research. It acts as a versatile building block for creating more complex molecules.
What are the CAS number and formula for 4-Sulfamoylbutyric acid?
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The CAS number for 4-Sulfamoylbutyric acid is 175476-52-5. Its linear formula is NH₂SO₂CH₂CH₂CH₂COOH.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-Sulfamoylbutyric acid in technical grade with an assay of ≥90% (T), containing ≤5% water as an impurity. We do not represent this product as USP, BP, or EP grade.
How should 4-Sulfamoylbutyric acid be handled safely?
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4-Sulfamoylbutyric acid is classified with GHS07 and carries a Warning signal word. It can cause skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Appropriate personal protective equipment, including a dust mask (type N95 US), eyeshields, and gloves, should be used. Handle in a well-ventilated area. Refer to the Safety Data Sheet for comprehensive handling information.
Is 4-Sulfamoylbutyric acid a controlled substance?
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Based on the provided data, there is no indication that 4-Sulfamoylbutyric acid is a controlled substance.
How is 4-Sulfamoylbutyric acid shipped and exported?
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Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals. We handle the packaging and shipping of 4-Sulfamoylbutyric acid according to international regulations for chemical transport.
How can I request a quote or sample for 4-Sulfamoylbutyric acid?
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To request a quote or a sample of 4-Sulfamoylbutyric acid, please contact our sales department through the provided channels on our website.
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