1H-Indazole-3-carboxaldehyde
1H-Indazole-3-carboxaldehyde (CAS: 5235-10-9) is a heterocyclic organic compound with the molecular formula C8H6N2O and a molecular weight of 146.15 g/mol. This indazole derivative functions as a valuable building block in organic synthesis. It is primarily utilised in the preparation of more complex molecules, particularly within the pharmaceutical and agrochemical industries. The compound is supplied by TSS with an assay of 97%.

Pharmaceutical Intermediate
1H-Indazole-3-carboxaldehyde serves as a key intermediate in the synthesis of various active pharmaceutical ingredients (APIs). Its indazole core is found in numerous biologically active molecules, making it a crucial component in drug discovery and development.
Agrochemical Synthesis
This compound can be employed in the development of novel agrochemicals, such as pesticides and herbicides. The heterocyclic structure offers potential for targeted biological activity and efficacy in crop protection applications.
Organic Synthesis Building Block
As a versatile building block, 1H-Indazole-3-carboxaldehyde is used in a wide range of organic reactions to construct complex molecular architectures. Its aldehyde functionality allows for various synthetic transformations.
Material Science Research
The unique electronic and structural properties of indazole derivatives may find applications in material science, particularly in the development of functional organic materials.
| Molecular weight | 146.15 |
|---|---|
| Empirical formula | C8H6N2O |
| Assay | 97% |
| Melting point | 141-145 °C |

Hazard statements
- H302Harmful if swallowed
| Water hazard class (WGK, DE) | 1 |
|---|---|
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22 |
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 1H-Indazole-3-carboxaldehyde used for?
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1H-Indazole-3-carboxaldehyde is primarily used as a building block in organic synthesis, particularly as an intermediate in the development of pharmaceuticals and agrochemicals.
What is the CAS number and molecular formula for 1H-Indazole-3-carboxaldehyde?
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The CAS number is 5235-10-9 and the molecular formula is C8H6N2O.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 1H-Indazole-3-carboxaldehyde with an assay of 97%. This is a technical/research grade material, and TSS does not represent it as USP, BP, or EP grade.
How should 1H-Indazole-3-carboxaldehyde be handled?
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1H-Indazole-3-carboxaldehyde is classified as harmful if swallowed (H302). It should be handled with appropriate personal protective equipment, avoiding ingestion, inhalation, and contact with skin and eyes. Refer to the Safety Data Sheet (SDS) for detailed handling instructions.
Is 1H-Indazole-3-carboxaldehyde a controlled substance?
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Based on the provided data, there is no indication that 1H-Indazole-3-carboxaldehyde is a controlled substance.
How is this chemical packed, shipped, and exported?
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Tech Serve Solutions packs chemicals securely in compliance with international shipping regulations. We are a specialist global supplier and exporter of fine chemicals, pharmaceutical intermediates and laboratory reagents.
How can I request a sample or quote for 1H-Indazole-3-carboxaldehyde?
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Please contact our sales team via the website or email to request a sample or a quotation for 1H-Indazole-3-carboxaldehyde.
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