3-Amino-2,5-dichlorobenzoic acid
3-Amino-2,5-dichlorobenzoic acid (CAS: 133-90-4) is a chemical compound with a molecular weight of 206.03 g/mol. This aromatic amino acid derivative serves as a valuable intermediate in organic synthesis. It is utilised in the development of more complex molecules within chemical biology and peptide chemistry, and finds application in the creation of unnatural amino acid derivatives for specialised research purposes.
- IUPAC
- Chloramben
- Synonyms
- H2NC6H2(Cl)2CO2H

Chemical Synthesis Intermediate
3-Amino-2,5-dichlorobenzoic acid acts as a building block in the synthesis of various organic compounds. Its specific structure allows for further chemical modifications to create novel molecules.
Research and Development
This compound is employed in laboratory settings for research purposes, particularly in areas like chemical biology and peptide chemistry. It aids in the exploration of new molecular structures and functionalities.
Unnatural Amino Acid Derivative Synthesis
It is used in the synthesis of unnatural amino acid derivatives, which are important tools for biochemical and medicinal research, enabling the study of protein structure and function.
| Molecular weight | 206.03 |
|---|---|
| Linear formula | H2NC6H2(Cl)2CO2H |
| Assay | 95% |
| Melting point | 194-197 °C (dec.)(lit.) |


Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
- H350May cause cancer
Precautionary statements
- P201Obtain special instructions before use
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
- P308IF exposed or concerned
| Protective equipment | Eyeshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 3077 9 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T |
| Risk statements (R) | 45-36/37/38 |
| Safety statements (S) | 22-26-36/37/39-45 |
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 3-Amino-2,5-dichlorobenzoic acid used for?
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3-Amino-2,5-dichlorobenzoic acid is used as an intermediate in chemical synthesis, for research in chemical biology and peptide chemistry, and for the synthesis of unnatural amino acid derivatives.
What is the CAS number and chemical formula for 3-Amino-2,5-dichlorobenzoic acid?
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The CAS number is 133-90-4 and the linear formula is H₂NC₆H₂(Cl)₂CO₂H.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3-Amino-2,5-dichlorobenzoic acid with an assay of 95%. This product is not specified as USP, BP, or EP grade and is intended for technical and research applications.
How should 3-Amino-2,5-dichlorobenzoic acid be handled?
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Handling requires caution due to hazards including skin irritation (H315), serious eye irritation (H319), respiratory irritation (H335), and potential carcinogenicity (H350). Use appropriate personal protective equipment such as eyeshields, gloves, and a respirator (e.g., N100 or P3 filter). Ensure good ventilation.
Is 3-Amino-2,5-dichlorobenzoic acid exported by Tech Serve Solutions?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including 3-Amino-2,5-dichlorobenzoic acid.
How can I request a sample or quote for 3-Amino-2,5-dichlorobenzoic acid?
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To request a sample or a quote, please contact our sales team through the website or by phone, providing the product name and CAS number (133-90-4).
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