Isonicotinic acid
Isonicotinic acid (CAS 55-22-1, C6H5NO2) is a pyridine derivative with a molecular weight of 123.11 g/mol. This organic compound functions as a crucial building block in chemical synthesis, particularly within heterocyclic chemistry. Its primary utility lies in its role as a precursor for various organic molecules and research chemicals. Tech Serve Solutions supplies this compound, adhering to stringent quality standards for research and development applications.
- IUPAC
- 4-Picolinic acid,Pyridine-4-carboxylic acid
- Synonyms
- 4-Picolinic acidPyridine-4-carboxylic acid

Chemical Synthesis Intermediate
Isonicotinic acid serves as a versatile intermediate in the synthesis of complex organic molecules. Its pyridine ring and carboxylic acid functional group allow for a range of chemical transformations.
Heterocyclic Compound Precursor
As a key pyridine derivative, it is employed in the construction of various heterocyclic compounds. These structures are often foundational in the development of new pharmaceuticals and agrochemicals.
Research and Development
This compound is utilized in academic and industrial research laboratories for exploring novel chemical reactions and creating new chemical entities.
| Molecular weight | 123.11 |
|---|---|
| Empirical formula | C6H5NO2 |
| Assay | 99% |
| 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
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 2 |
| 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 Isonicotinic acid used for?
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Isonicotinic acid is primarily used as a building block in chemical synthesis and as a precursor for various organic molecules, particularly within heterocyclic and pyridine chemistry for research and development purposes.
What are the CAS number and chemical formula for Isonicotinic acid?
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The CAS number for Isonicotinic acid is 55-22-1, and its chemical formula is C6H5NO2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Isonicotinic acid with a minimum purity of 99% (assay). This product is intended for research and laboratory use, and is not supplied as USP, BP, EP, or any pharmacopoeia grade.
How should I handle Isonicotinic acid safely?
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Isonicotinic acid is classified as a warning substance. It causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Always use appropriate personal protective equipment, including a dust mask (type N95 US), eyeshields, and gloves. Ensure good ventilation and avoid breathing dust. Refer to the Safety Data Sheet for comprehensive handling instructions.
Can Tech Serve Solutions export Isonicotinic acid?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including Isonicotinic acid, serving customers worldwide.
How can I request a sample or quote for Isonicotinic acid?
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To request a sample or obtain a quote for Isonicotinic acid, please contact our sales department via the website or email, providing your specific requirements.
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