3-Chloro-4-pyridinecarboxaldehyde
3-Chloro-4-pyridinecarboxaldehyde (CAS 72990-37-5) is a heterocyclic aldehyde with the molecular formula C6H4ClNO and a molecular weight of 141.56 g/mol. This compound serves as a valuable building block in organic synthesis, particularly within the fields of medicinal chemistry and materials science. Its reactive aldehyde group and chlorinated pyridine ring allow for diverse chemical transformations, making it a useful intermediate for creating more complex molecular structures.
- IUPAC
- 3-Chloroisonicotinaldehyde
- Synonyms
- 3-Chloroisonicotinaldehyde

Organic Synthesis Intermediate
Utilised as a key intermediate in the construction of complex organic molecules. The presence of both an aldehyde and a halogenated pyridine moiety offers versatile reaction sites for derivatisation.
Medicinal Chemistry
A building block for the synthesis of potential pharmaceutical agents. Its structure can be incorporated into novel drug candidates targeting various therapeutic areas.
Materials Science
Can be employed in the development of functional materials, such as organic semiconductors or specialised polymers, by leveraging its unique structural features.
| Molecular weight | 141.56 |
|---|---|
| Empirical formula | C6H4ClNO |
| Assay | 97% |
| Melting point | 58-62 °C(lit.) |

Hazard statements
- H302Harmful if swallowed
- H315Causes skin irritation
- H317May cause an allergic skin reaction
- H319Causes serious eye irritation
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22-36/38-43 |
| Safety statements (S) | 37/39 |
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-Chloro-4-pyridinecarboxaldehyde primarily used for?
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3-Chloro-4-pyridinecarboxaldehyde (CAS 72990-37-5) is primarily used as a versatile building block and intermediate in organic synthesis, particularly in medicinal chemistry and materials science.
What are the CAS number and chemical formula for 3-Chloro-4-pyridinecarboxaldehyde?
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The CAS number is 72990-37-5 and the chemical formula is C6H4ClNO.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3-Chloro-4-pyridinecarboxaldehyde with an assay of 97%. We do not represent this product as USP, BP, or EP grade.
How should 3-Chloro-4-pyridinecarboxaldehyde be handled safely?
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Handle with appropriate personal protective equipment, including a dust mask type N95 (US), eyeshields, faceshields, and gloves. Avoid contact with skin and eyes, and avoid inhalation of dust. Refer to the safety data sheet for comprehensive handling information.
Is 3-Chloro-4-pyridinecarboxaldehyde available for export?
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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals, including 3-Chloro-4-pyridinecarboxaldehyde.
How can I request a sample or quote for 3-Chloro-4-pyridinecarboxaldehyde?
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To request a sample or a quote, please contact our sales team through the provided contact channels on our website.
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