4-Bromo-3,5-dimethylpyrazole

CAS 3398-16-1C5H7BrN2Chemical Synthesis

4-Bromo-3,5-dimethylpyrazole (CAS: 3398-16-1) is a halogenated heterocyclic compound with the molecular formula C5H7BrN2 and a molecular weight of 175.03 g/mol. This white to off-white crystalline solid serves as a valuable building block in organic synthesis. Its structure, featuring a pyrazole ring with bromine and methyl substituents, makes it a versatile intermediate for creating more complex molecules, particularly in the fields of medicinal chemistry and materials science.

Synonyms: C5H7BrN2

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4-Bromo-3,5-dimethylpyrazole (C5H7BrN2) — chemical structure, CAS 3398-16-1; Chemistry, fine chemical supplied by Tech Serve Solutions

Building BlocksC3 to C5C3-C9Chemical SynthesisHalogenated HeterocyclesHeterocyclic Building BlocksPyrazoles More...

01 /Applications

Organic Synthesis Intermediate

Utilised as a key building block in the synthesis of novel organic compounds. Its reactive sites allow for diverse chemical transformations, facilitating the construction of complex molecular architectures.

Medicinal Chemistry

A crucial intermediate in the development of potential pharmaceutical agents. The pyrazole core is a common motif in biologically active molecules.

Materials Science

Employed in the creation of advanced materials. Its specific chemical structure can impart unique properties to polymers or functional materials.

02 /Properties

Molecular weight	175.03
Empirical formula	C5H7BrN2
Assay	99%
Melting point	123-125 °C(lit.)

03 /Safety & handling

GHS hazard pictogram: Harmful / irritant (GHS07) — Harmful / irritant

Warning

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

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

3398-16-1

MDL number

MFCD00005242

PubChem substance

24891910

05 /Quality & supply

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.

06 /Frequently asked questions

What is 4-Bromo-3,5-dimethylpyrazole used for?

4-Bromo-3,5-dimethylpyrazole is primarily used as a building block in organic synthesis, particularly in medicinal chemistry and materials science research.

What is the CAS number and formula for 4-Bromo-3,5-dimethylpyrazole?

The CAS number is 3398-16-1 and the empirical formula is C5H7BrN2.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies 4-Bromo-3,5-dimethylpyrazole with an assay of 99%. We do not represent this product as USP, BP, or EP grade.

How should 4-Bromo-3,5-dimethylpyrazole be handled?

According to GHS, this compound is a warning substance. Handle with appropriate personal protective equipment, including a dust mask (type N95 US), eyeshields, and gloves. Avoid breathing dust. Ensure adequate ventilation. It is classified as causing skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335).