Methyl 2-aminothiophene-3-carboxylate
Methyl 2-aminothiophene-3-carboxylate (CAS: 4651-81-4) is a heterocyclic building block with the molecular formula C4H2SCOOCH3NH2 and a molecular weight of 157.19 g/mol. This thiophene derivative is primarily utilised in chemical synthesis as a versatile intermediate for the construction of more complex organic molecules. Its structure lends itself to diverse reactions, making it a valuable component in research and development across various chemical disciplines.

Organic Synthesis Intermediate
Serves as a key building block in the synthesis of novel organic compounds. Its thiophene core and functional groups facilitate participation in a wide range of chemical transformations.
Pharmaceutical Research
Utilised in the development of potential pharmaceutical agents. The thiophene moiety is present in numerous biologically active molecules, making this compound a valuable starting point for drug discovery efforts.
Materials Science
Investigated for its potential in creating new materials with specific electronic or optical properties. Heterocyclic compounds like this are often explored for applications in functional materials.
| Molecular weight | 157.19 |
|---|---|
| Linear formula | C4H2SCOOCH3NH2 |
| Assay | 97% |
| Melting point | 76-81 °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 Methyl 2-aminothiophene-3-carboxylate used for?
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Methyl 2-aminothiophene-3-carboxylate is primarily used as a versatile building block and intermediate in organic synthesis, particularly for the development of novel organic compounds, pharmaceuticals, and potentially in materials science research.
What is the CAS number and molecular formula for Methyl 2-aminothiophene-3-carboxylate?
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The CAS number is 4651-81-4, and its molecular formula is C4H2SCOOCH3NH2. The linear formula is also provided as C4H2SCOOCH3NH2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Methyl 2-aminothiophene-3-carboxylate with an assay of 97%. This is a technical/research grade chemical, and TSS does not represent it as USP, BP, EP, or other pharmacopoeia grades.
How should Methyl 2-aminothiophene-3-carboxylate be handled?
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Methyl 2-aminothiophene-3-carboxylate is classified as a Warning with hazards including skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Appropriate personal protective equipment, such as a dust mask (type N95 US), eyeshields, and gloves, should be used. Handle in a well-ventilated area.
How is this product packed, shipped, and exported?
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Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals. Products are carefully packed according to international shipping regulations and exported worldwide.
How can I request a sample or quote for Methyl 2-aminothiophene-3-carboxylate?
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To request a sample or a quote, please contact our sales team through the website or by phone. Our experts will assist you with your specific requirements.
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