3-Amino-4-methylbenzoic acid
3-Amino-4-methylbenzoic acid (CAS: 2458-12-0; Formula: H2NC6H3(CH3)CO2H) is a substituted aromatic amino acid with a molecular weight of 151.16 g/mol. This compound is recognised for its utility in chemical synthesis and research applications. It serves as a valuable building block in organic chemistry, particularly within the fields of chemical biology and peptide chemistry, contributing to the development of novel compounds and materials.
- IUPAC
- 3-Amino-p-toluic acid

Chemical Synthesis Intermediate
Utilised as a key intermediate in the synthesis of more complex organic molecules. Its structure allows for various chemical modifications, making it valuable in multi-step synthetic routes.
Peptide Chemistry
Incorporated into peptide structures as an unnatural amino acid derivative. This enables the creation of peptides with modified properties for research in chemical biology.
Research and Development
Employed in laboratory settings for a range of research purposes, including the exploration of new chemical reactions and the development of novel compounds.
| Molecular weight | 151.16 |
|---|---|
| Linear formula | H2NC6H3(CH3)CO2H |
| Assay | 99% |
| Melting point | 164-168 °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) | 26-36 |
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 3-Amino-4-methylbenzoic acid used for?
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3-Amino-4-methylbenzoic acid is primarily used as an intermediate in chemical synthesis, particularly in peptide chemistry and chemical biology research. It serves as a building block for creating more complex organic molecules and unnatural amino acid derivatives.
What are the CAS number and chemical formula for 3-Amino-4-methylbenzoic acid?
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The CAS number for 3-Amino-4-methylbenzoic acid is 2458-12-0, and its chemical formula is H2NC6H3(CH3)CO2H.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3-Amino-4-methylbenzoic acid with an assay of 99%. This product is not classified as USP, BP, or EP grade.
What are the main safety hazards associated with 3-Amino-4-methylbenzoic acid?
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3-Amino-4-methylbenzoic acid is classified with GHS07 symbol and a 'Warning' signal word. It has hazard statements H315 (Causes skin irritation), H319 (Causes serious eye irritation), and H335 (May cause respiratory irritation). Appropriate personal protective equipment, including a dust mask (N95 US type), eyeshields, and gloves, should be used.
How is 3-Amino-4-methylbenzoic acid packaged and shipped?
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3-Amino-4-methylbenzoic acid is carefully packaged to ensure safe handling and transport. Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals.
How can I request a sample or quote for 3-Amino-4-methylbenzoic acid?
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To request a sample or quote for 3-Amino-4-methylbenzoic acid, please contact the Tech Serve Solutions sales team through our official website or designated contact channels.
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