3-Amino-4-methoxybenzoic acid
3-Amino-4-methoxybenzoic acid (CAS: 2840-26-8) is a chemical compound with the molecular formula H2NC6H3(OCH3)CO2H and a molecular weight of 167.16 g/mol. This aromatic amino acid derivative serves as a valuable building block in organic synthesis. Its structure makes it particularly useful in the fields of chemical biology, peptide chemistry, and the development of unnatural amino acid derivatives, contributing to advancements in various scientific research areas.

Chemical Synthesis Intermediate
3-Amino-4-methoxybenzoic acid is employed as a key intermediate in the synthesis of more complex organic molecules. Its functional groups allow for diverse chemical transformations, making it useful in multi-step synthetic routes for various chemical products.
Peptide Chemistry Research
As an unnatural amino acid derivative, this compound finds application in peptide chemistry. It can be incorporated into peptide sequences to modify their properties or to create novel peptide analogues for research purposes.
Chemical Biology Studies
The molecule's structure makes it suitable for use in chemical biology research. It can be used to probe biological systems or as a component in the synthesis of biologically active probes and reagents.
Development of Unnatural Amino Acids
This compound serves as a precursor or building block in the synthesis of non-proteinogenic amino acids. These unnatural amino acids are valuable tools for studying protein structure and function, and for developing new therapeutic agents.
| Molecular weight | 167.16 |
|---|---|
| Linear formula | H2NC6H3(OCH3)CO2H |
| Assay | ≥98% |
| Melting point | 208-210 °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 3-Amino-4-methoxybenzoic acid used for?
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3-Amino-4-methoxybenzoic acid is primarily used as an intermediate in chemical synthesis, particularly in peptide chemistry, chemical biology, and for the development of unnatural amino acid derivatives.
What is the CAS number and chemical formula for 3-Amino-4-methoxybenzoic acid?
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The CAS number is 2840-26-8, and the chemical formula is H2NC6H3(OCH3)CO2H.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3-Amino-4-methoxybenzoic acid with a purity of ≥98%. We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade.
How should I handle 3-Amino-4-methoxybenzoic acid safely?
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Handle 3-Amino-4-methoxybenzoic acid with appropriate personal protective equipment, including a dust mask (type N95 US), eyeshields, and gloves. Ensure adequate ventilation as it may cause skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335).
Does Tech Serve Solutions export this chemical?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including 3-Amino-4-methoxybenzoic acid.
How can I request a quote or sample?
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To request a quote or sample of 3-Amino-4-methoxybenzoic acid, please contact our sales team through the website or by phone.
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