3-Chloroindazole
3-Chloroindazole (CAS: 29110-74-5), with the molecular formula C7H5ClN2 and a molecular weight of 152.58 g/mol, is a halogenated heterocyclic compound. It serves as a valuable building block in organic synthesis, particularly within the pharmaceutical and chemical industries. This indazole derivative is primarily utilised in the development of novel chemical entities and research applications where its specific structural features are required.

Pharmaceutical Intermediate
3-Chloroindazole is employed as a key intermediate in the synthesis of active pharmaceutical ingredients (APIs). Its structure facilitates the introduction of the indazole moiety into complex drug molecules.
Organic Synthesis Building Block
This compound is a versatile reagent for constructing more complex organic molecules. It is frequently used in research and development laboratories for creating novel chemical structures.
Agrochemical Research
The indazole scaffold is found in various agrochemicals, and 3-Chloroindazole may be used in the exploratory synthesis of new pesticides or herbicides.
Material Science
Heterocyclic compounds like 3-Chloroindazole can be investigated for potential applications in material science, such as in the development of functional dyes or electronic materials.
| Molecular weight | 152.58 |
|---|---|
| Empirical formula | C7H5ClN2 |
| Assay | 97% |
| Melting point | 149 °C (subl.)(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) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-37/39 |
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-Chloroindazole used for?
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3-Chloroindazole is primarily used as a building block in organic synthesis, particularly in the pharmaceutical industry for the development of new chemical entities and as an intermediate in the creation of active pharmaceutical ingredients.
What are the CAS number and formula for 3-Chloroindazole?
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The CAS number for 3-Chloroindazole is 29110-74-5, and its molecular formula is C7H5ClN2.
What grade and purity does Tech Serve Solutions supply for 3-Chloroindazole?
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Tech Serve Solutions supplies 3-Chloroindazole with an assay of 97%. This product is typically considered a research or technical grade chemical and is not represented as USP, BP, EP, or pharmacopoeia grade.
How should 3-Chloroindazole be handled safely?
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3-Chloroindazole is classified with GHS07 signal word 'Warning' and hazard statements H315, H319, and H335. Safe handling requires wearing a dust mask type N95 (US), eyeshields, and gloves. Ensure adequate ventilation and avoid breathing dust. In case of contact, follow precautionary statements P261 and P305 + P351 + P338.
Is 3-Chloroindazole available for export and how is it packaged?
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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals, including 3-Chloroindazole. Packaging details can be provided upon request to ensure safe and compliant international shipping.
How can I request a sample or quote for 3-Chloroindazole?
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To request a sample or a quote for 3-Chloroindazole, please contact the TSS sales department through our website or by calling our customer service line.
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