Description

1-Ethyl-3-Methyl-4-(Tetramethyl-1,3,2-Dioxaborolan-2-Yl)-1H-Pyrazole is a high-value, organoboron building block essential for modern synthetic chemistry. Its core value lies in enabling efficient, selective cross-coupling reactions, which are fundamental for constructing complex molecular architectures. This compound is critically needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and advanced materials industries for drug discovery and fine chemical synthesis.

Application

• Pharmaceutical Intermediate: A key precursor in Suzuki-Miyaura cross-coupling reactions for synthesizing novel active pharmaceutical ingredients (APIs) and drug candidates.
• Agrochemical Synthesis: Used in the development of advanced herbicides, fungicides, and insecticides requiring specific heterocyclic structures.
• Material Science Research: Serves as a building block for creating organic electronic materials, such as OLED (Organic Light-Emitting Diode) emitters and charge transport materials.
• Ligand & Catalyst Development: Employed in the synthesis of novel N-heterocyclic ligands for transition metal catalysis.
• Chemical Biology Probes: Utilized to create boron-containing probes for bioorthogonal chemistry and target engagement studies.
• Academic & Industrial R&D: A versatile reagent for method development and exploring new synthetic pathways in organic chemistry laboratories.

Basic Information

Product Name	1-Ethyl-3-Methyl-4-(Tetramethyl-1,3,2-Dioxaborolan-2-Yl)-1H-Pyrazole
CAS No.	2019997-43-2
Molecular Formula	C12H23BN2O2
Molecular Weight	238.14 g/mol
Synonyms	4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1-ethyl-3-methyl-1H-pyrazole; 1-Ethyl-3-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazole; 1-Ethyl-3-methyl-4-(tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole; 1-Ethyl-3-methyl-1H-pyrazole-4-boronic acid pinacol ester; 1-Ethyl-3-methylpyrazole-4-boronic acid pinacol ester; EMTP; Pyrazole boronic ester derivative
EINECS	Contact for details

Quality Control

Our production of 1-Ethyl-3-Methyl-4-(Tetramethyl-1,3,2-Dioxaborolan-2-Yl)-1H-Pyrazole adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity for sensitive synthetic applications. All materials are characterized by advanced analytical techniques including NMR, HPLC, and GC-MS. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to support your quality assurance and regulatory documentation needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This compound is moisture-sensitive; keep the container tightly sealed under an inert atmosphere (e.g., nitrogen or argon) for long-term storage to maintain optimal purity and reactivity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥97.0% (Area %)
Water Content (KF)	≤0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.