1,5-dimethyl-1H-pyrazol-4-ylboronic acid

• CAT Number: M142967
• CAS Number: 1204333-57-2
• Molecular Formula: C5H9BN2O2
• Molecular Weight: 139.95
• Purity: 97%
• Synonyms: B-(1,5-Dimethyl-1H-pyrazol-4-yl)boronic Acid
• Appearance: white solid
• Storage: Store at -20C
• IUPAC Name: (1,5-dimethylpyrazol-4-yl)boronic acid
• InChI: InChI=1S/C5H9BN2O2/c1-4-5(6(9)10)3-7-8(4)2/h3,9-10H,1-2H3
• InChIKey: NAYVNBPKYJFKQA-UHFFFAOYSA-N
• SMILES: B(C1=C(N(N=C1)C)C)(O)O

1,5-Dimethyl-1H-pyrazol-4-ylboronic acid（Cat No.:M142967）is a boronic acid–functionalized heterocycle featuring a pyrazole ring substituted with methyl groups at positions 1 and 5. This compound is widely used in Suzuki–Miyaura cross-coupling reactions to form C–C bonds, particularly in the synthesis of pharmaceuticals, agrochemicals, and heteroaryl-based materials. The boronic acid moiety offers high reactivity under mild conditions, while the pyrazole core contributes biological relevance and chemical stability. Typically a solid, it is soluble in polar organic solvents and water, making it suitable for diverse applications in medicinal and synthetic organic chemistry.