4-Oxo-4H-1-benzopyran-2-carboxylic acid
4-Oxo-4H-1-benzopyran-2-carboxylic acid (CAS 4940-39-0), with the molecular formula C10H6O4 and a molecular weight of 190.15 g/mol, is a heterocyclic organic compound. This benzopyran derivative serves as a valuable building block in organic synthesis and is utilized in research for its potential biological activities and as a key intermediate in the development of new chemical entities. Its structure is well-suited for further chemical modification and incorporation into more complex molecular frameworks.
- IUPAC
- 4-Oxo-4H-1-Benzopyran-2-carboxylic acid,Chromocarb,Chromone-2-carboxylic acid

Organic Synthesis Intermediate
Utilised as a foundational building block in the synthesis of complex organic molecules. Its reactive carboxylic acid group and benzopyran core allow for diverse chemical transformations.
Research and Development
Employed in academic and industrial research laboratories for exploring new chemical reactions, developing novel compounds, and investigating potential biological activities.
Heterocyclic Chemistry
A key compound within heterocyclic chemistry, facilitating the construction of various fused ring systems and functionalized heterocyclic compounds.
| Molecular weight | 190.15 |
|---|---|
| Empirical formula | C10H6O4 |
| Melting point | 260 °C (dec.)(lit.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
| 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.
| Gene Information | human ... PTPN1(5770) |
|---|
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-Oxo-4H-1-benzopyran-2-carboxylic acid used for?
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4-Oxo-4H-1-benzopyran-2-carboxylic acid (CAS 4940-39-0) is primarily used as a building block in organic synthesis and for research purposes in the development of new chemical entities and exploration of biological activities.
What are the CAS number and formula for this compound?
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The CAS number is 4940-39-0 and the molecular formula is C10H6O4.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this compound typically as a research-grade material. The specific assay and purity will be detailed on the Certificate of Analysis provided with each batch, and TSS does not represent it as USP, BP, or EP grade.
How should 4-Oxo-4H-1-benzopyran-2-carboxylic acid be handled?
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This compound is classified as a Warning with hazards including skin irritation (H315), eye irritation (H319), and respiratory irritation (H335). Handle with appropriate personal protective equipment, including eyeshields, gloves, and a type N95 dust mask. Ensure adequate ventilation and avoid dust formation.
Is this chemical exported by Tech Serve Solutions?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including 4-Oxo-4H-1-benzopyran-2-carboxylic acid.
How can I request a sample or quote?
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To request a sample or a quotation for 4-Oxo-4H-1-benzopyran-2-carboxylic acid, please contact our sales team through the website or via the provided contact details.
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