3,5-Pyridinedicarboxylic acid
3,5-Pyridinedicarboxylic acid (CAS: 499-81-0) is a notable pyridine derivative with the molecular formula C7H5NO4 and a molecular weight of 167.12 g/mol. This compound serves as a valuable building block in organic synthesis, particularly within the realm of heterocyclic chemistry. Its dicarboxylic acid functionality allows for versatile derivatisation, making it a useful intermediate for the creation of more complex molecules in research and development settings.
- IUPAC
- Dinicotinic acid
- Synonyms
- Dinicotinic acid

Organic Synthesis Intermediate
Used as a foundational molecule in the synthesis of complex organic compounds and novel materials. Its structure is amenable to various chemical transformations for developing new pharmaceutical agents or functional materials.
Heterocyclic Chemistry Building Block
A key component in the construction of diverse heterocyclic systems. It provides a pyridine core functionalised for further chemical elaboration in academic and industrial research.
Ligand Synthesis
Can be employed in the design and synthesis of ligands for coordination chemistry, potentially influencing catalytic processes or material properties.
| Molecular weight | 167.12 |
|---|---|
| Empirical formula | C7H5NO4 |
| Assay | 98% |
| Melting point | >300 °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
| 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 3,5-Pyridinedicarboxylic acid used for?
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3,5-Pyridinedicarboxylic acid is primarily used as a building block in organic synthesis and for the construction of heterocyclic compounds in research and development.
What is the CAS number and formula for 3,5-Pyridinedicarboxylic acid?
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The CAS number is 499-81-0 and the empirical formula is C7H5NO4.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3,5-Pyridinedicarboxylic acid with an assay of 98%. We do not represent this product as meeting any specific pharmacopoeia standards such as USP, BP, or EP.
How should 3,5-Pyridinedicarboxylic acid be handled safely?
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3,5-Pyridinedicarboxylic acid is classified as an irritant. Handle with appropriate personal protective equipment (gloves, eye protection, respiratory protection) in a well-ventilated area. Avoid contact with skin, eyes, and clothing, and prevent inhalation of dust. Refer to the Safety Data Sheet (SDS) for detailed handling information.
Is 3,5-Pyridinedicarboxylic acid a controlled substance?
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The provided data does not indicate that 3,5-Pyridinedicarboxylic acid is a controlled substance.
How is 3,5-Pyridinedicarboxylic acid packed, shipped, and exported?
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3,5-Pyridinedicarboxylic acid is carefully packed to ensure stability during transit and is available for export globally by Tech Serve Solutions.
How can I request a sample or quote for 3,5-Pyridinedicarboxylic acid?
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Please contact our sales team via the website or email to request a sample or obtain a quotation for 3,5-Pyridinedicarboxylic acid.
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