Description

(5-Methyl-1H-Pyrazol-4-Yl)Boronic Acid is a versatile and high-value boronic acid derivative, serving as a critical building block in modern synthetic chemistry. Its primary value lies in enabling efficient carbon-carbon bond formation via the Suzuki-Miyaura cross-coupling reaction, a cornerstone of pharmaceutical and agrochemical research. This compound is essential for medicinal chemists and process development scientists in the pharmaceutical, agrochemical, and advanced materials industries seeking to construct complex heterocyclic scaffolds.

Application

• Pharmaceutical Intermediate: A key synthon for constructing novel active pharmaceutical ingredients (APIs), particularly those containing pyrazole cores for oncology, anti-inflammatory, and metabolic disease targets.
• Agrochemical Synthesis: Used in the research and development of new herbicides, fungicides, and insecticides that require specific pyrazole-based structures for enhanced efficacy.
• Suzuki-Miyaura Cross-Coupling: Serves as a pivotal boron-containing coupling partner for palladium-catalyzed reactions to create biaryl and heteroaryl linkages in complex molecules.
• Material Science Research: Employed in the synthesis of organic electronic materials, such as organic light-emitting diodes (OLEDs) and semiconductors, where precise molecular architecture is required.
• Chemical Biology & Probe Development: Utilized in creating molecular probes and inhibitors for studying biological pathways and enzyme functions.
• Custom Synthesis & Contract Manufacturing: A fundamental starting material for custom synthesis houses and CDMOs (Contract Development and Manufacturing Organizations) serving the life sciences sector.

Basic Information

Product Name	(5-Methyl-1H-Pyrazol-4-Yl)Boronic Acid
CAS No.	1093961-41-1
Molecular Formula	C4H7BN2O2
Molecular Weight	125.93 g/mol
Synonyms	5-Methyl-1H-pyrazole-4-boronic acid; (5-Methyl-1H-pyrazol-4-yl)boronic acid; 4-Borono-5-methyl-1H-pyrazole; 5-Methyl-4-pyrazoleboronic acid; 1H-Pyrazole-4-boronic acid, 5-methyl-; 5-Methyl-1H-4-pyrazoleboronic acid; B-(5-Methyl-1H-pyrazol-4-yl)boronic acid
EINECS	Contact for details

Quality Control

Our (5-Methyl-1H-Pyrazol-4-Yl)Boronic Acid is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC for purity and NMR for structural confirmation, to ensure it meets the high standards required for research and development. Certificates of Analysis (COA) with detailed specifications are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Due to its hygroscopic (moisture-sensitive) nature, store under an inert atmosphere (e.g., nitrogen or argon) in a cool, dry place. Recommended long-term storage at 2-8°C. Allow the sealed container to reach room temperature before opening to prevent moisture condensation.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥97.0%
Water Content (KF)	≤1.0%

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