3,5-Dimethylpyrazole-4-boronic acid pinacol ester

CAS 857530-80-4C11H19BN2O2Chemical Synthesis

3,5-Dimethylpyrazole-4-boronic acid pinacol ester (CAS 857530-80-4) is an organoboron compound with a molecular weight of 222.09 g/mol. This white to off-white solid is supplied at 97% purity. It serves as a valuable building block in organic synthesis, particularly in cross-coupling reactions for the development of complex molecules in pharmaceutical research and materials science.

IUPAC: 3,5-Dimethyl-4-(4,4,5,5-tetramethyl-1,3,2dioxaborolan-2-yl)-1H-pyrazole,3,5-Dimethyl-4-pyrazoleboronic acid pinacol ester
Synonyms: C11H19BN2O23,5-Dimethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole3,5-Dimethyl-4-pyrazoleboronic acid pinacol ester

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3,5-Dimethylpyrazole-4-boronic acid pinacol ester (C11H19BN2O2) — chemical structure, CAS 857530-80-4; Chemistry, fine chemical supplied by Tech Serve Solutions

Boronate EstersChemical SynthesisHeteroaryl Boronate EstersOrganometallic Reagents

01 /Applications

Organic Synthesis Intermediate

Utilised as a key synthon in Suzuki-Miyaura cross-coupling reactions, enabling the formation of carbon-carbon bonds for constructing novel molecular architectures.

Pharmaceutical Research

A crucial reagent in the discovery and development of new drug candidates, facilitating the synthesis of diverse heterocyclic compounds with potential therapeutic activity.

Materials Science

Employed in the synthesis of advanced materials, such as organic semiconductors and functional polymers, where precise molecular design is essential.

02 /Properties

Molecular weight	222.09
Empirical formula	C11H19BN2O2
Assay	97%
Melting point	163-168 °C(lit.)

03 /Safety & handling

Protective equipment	dust mask type N95 (US), Eyeshields, Gloves
Water hazard class (WGK, DE)	3

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

04 /Identifiers & registry

CAS number

857530-80-4

MDL number

MFCD05663852

PubChem substance

24882751

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 3,5-Dimethylpyrazole-4-boronic acid pinacol ester used for?

This compound is primarily used as an intermediate in organic synthesis, especially in Suzuki-Miyaura cross-coupling reactions for creating complex organic molecules relevant to pharmaceutical research and materials science.

What is the CAS number and formula for 3,5-Dimethylpyrazole-4-boronic acid pinacol ester?

The CAS number is 857530-80-4 and its empirical formula (Hill notation) is C11H19BN2O2.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies 3,5-Dimethylpyrazole-4-boronic acid pinacol ester at a minimum assay of 97%. This product is not represented as USP, BP, or EP grade.

What are the safety and handling precautions for this chemical?

Handling this chemical requires appropriate personal protective equipment, including a dust mask (N95 US standard), eyeshields, and gloves, to prevent inhalation and contact. It is classified under WGK Germany 3.

How is this product packed, shipped, and exported?

3,5-Dimethylpyrazole-4-boronic acid pinacol ester is carefully packed for stability and safety. As a global supplier, Tech Serve Solutions expertly handles the export of this chemical worldwide.