4-(Butylamino)benzoic acid
4-(Butylamino)benzoic acid (CAS: 4740-24-3), with the linear formula CH3(CH2)3NHC6H4CO2H, is a chemical compound relevant to synthetic organic chemistry. Its molecular weight is 193.24 g/mol. This substance finds utility as a building block in chemical synthesis, particularly within the fields of chemical biology and peptide chemistry for creating unnatural amino acid derivatives. Available from Tech Serve Solutions, it is offered with an assay of 97%.

Chemical Synthesis Intermediate
4-(Butylamino)benzoic acid serves as a versatile intermediate in the synthesis of more complex organic molecules. Its structure, featuring both an amine and a carboxylic acid group, allows for diverse chemical transformations.
Peptide Chemistry and Unnatural Amino Acids
This compound is employed in peptide chemistry for the incorporation of unnatural amino acid derivatives. It can be utilised in the development of novel peptides with modified structures and functions for research purposes.
Research and Development
As a fine chemical, 4-(Butylamino)benzoic acid is valuable for researchers in chemical biology and related fields. It supports the exploration of new chemical entities and biological probes.
| Molecular weight | 193.24 |
|---|---|
| Linear formula | CH3(CH2)3NHC6H4CO2H |
| Assay | 97% |
| Melting point | 149-151 °C(lit.) |

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) | 26-37/39 |
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-(Butylamino)benzoic acid used for?
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4-(Butylamino)benzoic acid is primarily used as an intermediate in chemical synthesis, particularly within chemical biology and peptide chemistry for creating unnatural amino acid derivatives. It is also utilized in research and development.
What are the CAS number and chemical formula for 4-(Butylamino)benzoic acid?
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The CAS number for 4-(Butylamino)benzoic acid is 4740-24-3 and its linear chemical formula is CH3(CH2)3NHC6H4CO2H.
What grade and purity does Tech Serve Solutions supply for 4-(Butylamino)benzoic acid?
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Tech Serve Solutions supplies 4-(Butylamino)benzoic acid with an assay of 97%. This is a research-grade chemical and is not supplied as USP, BP, EP, or any other pharmacopoeia standard.
How should 4-(Butylamino)benzoic acid be handled safely?
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According to GHS, 4-(Butylamino)benzoic acid is a Warning substance, classified with hazards H315 (causes skin irritation), H319 (causes serious eye irritation), and H335 (may cause respiratory irritation). Appropriate personal protective equipment includes a dust mask type N95 (US), eyeshields, and gloves. Always handle in a well-ventilated area.
Is 4-(Butylamino)benzoic acid a controlled substance?
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The provided data does not indicate that 4-(Butylamino)benzoic acid is a controlled substance.
How can I request a quote or sample for 4-(Butylamino)benzoic acid?
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To request a quote or sample of 4-(Butylamino)benzoic acid, please contact the Tech Serve Solutions sales team via our website or by phone. We export globally.
What is the melting point of 4-(Butylamino)benzoic acid?
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The melting point of 4-(Butylamino)benzoic acid is approximately 149-151 °C.
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