4-Bromo-1,3,5-trimethylpyrazole
4-Bromo-1,3,5-trimethylpyrazole (CAS: 15801-69-1) is a halogenated heterocyclic organic compound with the molecular formula C6H9BrN2 and a molecular weight of 189.05 g/mol. It serves as a valuable building block in chemical synthesis, particularly within the realm of heterocyclic chemistry. This compound is supplied by Tech Serve Solutions for research and development purposes, offering a purity of 98% suitable for various laboratory applications.
- Synonyms
- 15801-69-1C6H9BrN2

Organic Synthesis Intermediate
This brominated pyrazole derivative is employed as a versatile intermediate in the synthesis of more complex organic molecules. Its structure allows for further functionalization via reactions involving the bromine atom or the pyrazole ring.
Heterocyclic Chemistry Research
As a substituted pyrazole, 4-Bromo-1,3,5-trimethylpyrazole is utilised in academic and industrial research for the development of novel heterocyclic compounds. These compounds may possess interesting chemical or biological properties.
Building Block for Fine Chemicals
The compound functions as a key building block for the preparation of fine chemicals and potentially pharmaceutical intermediates. Its specific substitution pattern makes it a targeted reagent for certain synthetic routes.
| Molecular weight | 189.05 |
|---|---|
| Empirical formula | C6H9BrN2 |
| Assay | 98% |
| Boiling point | 101-102 °C/15 mmHg(lit.) |
| Melting point | 30-34 °C(lit.)30-34 °C |

Hazard statements
- H301Toxic if swallowed
Precautionary statements
- P301IF SWALLOWED
| Protective equipment | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
|---|---|
| Flash point | 103 °C / 217.4 °F |
| Transport (UN / ADR) | UN 2811 6.1 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| 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 4-Bromo-1,3,5-trimethylpyrazole used for?
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4-Bromo-1,3,5-trimethylpyrazole (CAS: 15801-69-1) is primarily used as a building block in organic synthesis and heterocyclic chemistry research. It serves as an intermediate for creating more complex organic molecules and fine chemicals.
What is the CAS number and molecular formula for 4-Bromo-1,3,5-trimethylpyrazole?
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The CAS number is 15801-69-1 and the molecular formula is C6H9BrN2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-Bromo-1,3,5-trimethylpyrazole with an assay of 98%. This is a technical or research grade; TSS does not represent it as USP, BP, or EP grade.
How should 4-Bromo-1,3,5-trimethylpyrazole be handled safely?
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4-Bromo-1,3,5-trimethylpyrazole is classified as Dangerous (GHS06, Danger) and is harmful if swallowed (H301). Appropriate personal protective equipment including a dust mask (type N95 or equivalent), eyeshields, faceshields, and gloves should be used during handling. It is also marked with EU Hazard code Xn and Risk Statement R22.
Is 4-Bromo-1,3,5-trimethylpyrazole a controlled substance?
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The provided data does not indicate that 4-Bromo-1,3,5-trimethylpyrazole is a controlled substance.
How is this chemical packed and shipped internationally?
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Tech Serve Solutions exports chemicals globally. For 4-Bromo-1,3,5-trimethylpyrazole, it is classified under UN 2811, Hazard Class 6.1, Packing Group III, indicating it is a toxic solid, organic, n.o.s. for transport.
How can I request a quote or sample?
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To request a quote or a sample of 4-Bromo-1,3,5-trimethylpyrazole, please contact our sales team through the website or by phone, providing your specific requirements.
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