Isoquinoline-5-carboxaldehyde
Isoquinoline-5-carboxaldehyde (CAS: 80278-67-7), with the molecular formula C10H7NO and a molecular weight of 157.17 g/mol, is a heterocyclic aldehyde. This compound functions as a valuable building block in organic synthesis, particularly within the realm of heterocyclic chemistry. It is employed in the development of more complex molecular structures, serving as a key intermediate for various chemical transformations.

Heterocyclic Synthesis
Isoquinoline-5-carboxaldehyde serves as a foundational component in the synthesis of complex heterocyclic compounds, leveraging the reactivity of its aldehyde group and the isoquinoline core structure.
Pharmaceutical Intermediates
It is utilised in the multi-step synthesis pathways for potential pharmaceutical agents, contributing to the development of novel drug candidates.
Organic Building Block
As a C10 organic building block, this compound is suitable for introducing the isoquinoline moiety into larger molecular frameworks in various research and development applications.
Chemical Research
The aldehyde functionality allows for diverse chemical modifications, making Isoquinoline-5-carboxaldehyde a useful reagent in exploratory chemical research and methodology development.
| Molecular weight | 157.17 |
|---|---|
| Empirical formula | C10H7NO |
| Assay | 96% |
| Application | Direct conversion of heteroaryl-carboxaldehydes to acetonitriles by treatment with cyanoethylphosphonate followed by samarium(II) iodide reduction.1 |
| Melting point | 116-120 °C |

Hazard statements
- H302Harmful if swallowed
- H319Causes serious eye irritation
Precautionary statements
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22-36 |
| Safety statements (S) | 26 |
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 Isoquinoline-5-carboxaldehyde used for?
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Isoquinoline-5-carboxaldehyde (CAS: 80278-67-7) is primarily used as a building block in organic synthesis, including the creation of heterocyclic compounds and potential pharmaceutical intermediates.
What are the CAS number and formula for Isoquinoline-5-carboxaldehyde?
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The CAS number for Isoquinoline-5-carboxaldehyde is 80278-67-7, and its molecular formula is C10H7NO.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Isoquinoline-5-carboxaldehyde with an assay of 96%. This product is suitable for research and general chemical synthesis purposes and is not represented as USP, BP, or EP grade.
How should Isoquinoline-5-carboxaldehyde be handled safely?
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Isoquinoline-5-carboxaldehyde is classified as harmful if swallowed and causes serious eye irritation (H302, H319). Handle with appropriate personal protective equipment, including a dust mask (type N95 or equivalent), eyeshields, and gloves. Ensure good ventilation and avoid dust formation. In case of eye contact, rinse cautiously with water for several minutes; remove contact lenses, if present and easy to do. Continue rinsing.
Is Isoquinoline-5-carboxaldehyde a controlled substance?
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The provided data does not indicate that Isoquinoline-5-carboxaldehyde is a controlled substance.
How is Isoquinoline-5-carboxaldehyde packed and shipped?
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Products are carefully packed according to international shipping regulations and are available for export globally by Tech Serve Solutions.
How can I request a sample or a quote for Isoquinoline-5-carboxaldehyde?
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Please use the contact form or email our sales department to request a sample or a quotation for Isoquinoline-5-carboxaldehyde.
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