1,3-Dimethylpyrazole-4-boronic acid pinacol ester

CAS 1046832-21-6C11H19BN2O2Chemical Synthesis

1,3-Dimethylpyrazole-4-boronic acid pinacol ester (CAS: 1046832-21-6) is an organoboron compound with a molecular weight of 222.09 g/mol. This heteroaryl boronate ester serves as a valuable building block in organic synthesis, particularly in the development of novel pharmaceutical intermediates and advanced materials. Its pyrazole core and pinacol boronate ester functionality make it amenable to various cross-coupling reactions, facilitating the construction of complex molecular architectures.

Synonyms: C11H19BN2O2

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1,3-Dimethylpyrazole-4-boronic acid pinacol ester (C11H19BN2O2) — chemical structure, CAS 1046832-21-6; Chemistry, fine chemical supplied by Tech Serve Solutions

Boronate EstersChemical SynthesisHeteroaryl Boronate EstersOrganometallic Reagents

01 /Applications

Organic Synthesis Reagent

Utilised as a versatile building block in organic synthesis, especially for Suzuki-Miyaura coupling reactions. It enables the introduction of the 1,3-dimethylpyrazole moiety into diverse molecular frameworks.

Pharmaceutical Intermediate Development

Serves as a key intermediate in the synthesis of potential drug candidates. The pyrazole ring is a common scaffold found in many biologically active compounds.

Materials Science

Applicable in the development of novel organic materials, such as those used in organic electronics or specialised polymers, owing to its unique structural features.

02 /Properties

Molecular weight	222.09
Empirical formula	C11H19BN2O2
Assay	97%
Melting point	70-76 °C

03 /Safety & handling

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

Warning

Hazard statements

H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust, fume, gas or vapours
P305IF IN EYES

Water hazard class (WGK, DE)	3
Hazard codes (EU)	Xn
Risk statements (R)	22-36/37/38
Safety statements (S)	26-36

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

04 /Identifiers & registry

CAS number

1046832-21-6

MDL number

MFCD09864190

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 1,3-Dimethylpyrazole-4-boronic acid pinacol ester used for?

1,3-Dimethylpyrazole-4-boronic acid pinacol ester is primarily used as a versatile building block in organic synthesis, particularly for Suzuki-Miyaura coupling reactions, and in the development of pharmaceutical intermediates and novel organic materials.

What is the CAS number and molecular formula for this compound?

The CAS number is 1046832-21-6, and its empirical formula (Hill notation) is C11H19BN2O2.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies this compound with an assay of 97%. It is supplied for research and development purposes and is not represented as USP, BP, or EP grade.

What are the main safety hazards associated with this chemical?

This compound is classified as harmful if swallowed (H302), causes skin irritation (H315), causes serious eye irritation (H319), and may cause respiratory irritation (H335). Handle with appropriate personal protective equipment in a well-ventilated area.

How is this chemical typically packed and shipped by TSS?

1,3-Dimethylpyrazole-4-boronic acid pinacol ester is carefully packed according to industry standards to ensure safe transit. TSS offers global export services for this product.