4-Bromo-1H-indazole
4-Bromo-1H-indazole (CAS: 186407-74-9, C7H5BrN2) is a halogenated heterocyclic building block. With a molecular weight of 197.03 g/mol, this compound is primarily utilised in chemical synthesis. Its structure, featuring a bromine atom on the indazole core, makes it a valuable intermediate for creating more complex molecular architectures in research and development settings. TSS supplies this chemical for laboratory and industrial synthesis applications.
- IUPAC
- 4-Bromoindazole
- Synonyms
- 4-Bromoindazole

Organic Synthesis Intermediate
4-Bromo-1H-indazole serves as a key intermediate in the synthesis of various organic compounds. Its reactive bromine atom allows for further functionalisation through coupling reactions or nucleophilic substitutions, enabling the construction of diverse molecular scaffolds.
Pharmaceutical Research
This indazole derivative is employed in the development of potential pharmaceutical agents. Its structural motif is found in molecules with diverse biological activities, making it a useful building block for medicinal chemistry programmes.
Heterocyclic Chemistry
As a member of the indazole family, 4-Bromo-1H-indazole is instrumental in heterocyclic chemistry research. It facilitates the study and synthesis of novel heterocyclic systems with unique chemical and physical properties.
| Molecular weight | 197.03 |
|---|---|
| Empirical formula | C7H5BrN2 |
| Assay | 95% |
| Storage temperature | 2-8°C |
| Melting point | 160-165 °C |

Hazard statements
- H301Toxic if swallowed
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P301IF SWALLOWED
- P305IF IN EYES
| Transport (UN / ADR) | UN 2811 6.1 / PGIII |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T |
| Risk statements (R) | 25-36/37/38 |
| 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 4-Bromo-1H-indazole used for?
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4-Bromo-1H-indazole is primarily used as a building block in organic synthesis, particularly in the development of pharmaceutical agents and other complex heterocyclic compounds.
What is the CAS number and formula for 4-Bromo-1H-indazole?
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The CAS number for 4-Bromo-1H-indazole is 186407-74-9, and its molecular formula is C7H5BrN2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-Bromo-1H-indazole with an assay of 95%. This product is intended for laboratory and research purposes and is not represented as USP, BP, EP, or any other pharmacopoeial grade.
How should 4-Bromo-1H-indazole be handled and stored?
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4-Bromo-1H-indazole is classified as a danger substance. It is toxic if swallowed and causes skin and eye irritation, and may cause respiratory irritation. Handle with appropriate personal protective equipment in a well-ventilated area and store at 2-8°C.
How is 4-Bromo-1H-indazole shipped and exported?
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4-Bromo-1H-indazole is shipped according to UN 2811 regulations (Class 6.1, Packing Group III). TSS is experienced in exporting chemicals globally, adhering to all relevant international shipping and customs regulations.
How can I request a quote or sample for 4-Bromo-1H-indazole?
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To request a quote or sample for 4-Bromo-1H-indazole, please contact the TSS sales team directly through our website or by phone, providing your specific requirements.
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