4-Isoxazoleboronic acid pinacol ester

Also known as: 4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)isoxazole, Isoxazole-4-boronic acid pinacol ester, 4-isooxazolylboronic acid pinacol ester, 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,2-oxazole, Isoxazole, 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-, 3-Hydroxy-2,3-dimethylbutan-2-yl hydrogen 1,2-oxazol-4-ylboronate, 3-hydroxy-2,3-dimethylbutan-2-yl hydrogen isoxazol-4-ylboronate

4-Isoxazoleboronic acid pinacol ester (CAS 928664-98-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H14BNO3 and a molecular weight of 195.023 g/mol. Key properties include a melting point of 110-115°C, a boiling point of 289.9±13.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 129.1±19.8 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

928664-98-6

Jingsj CID

J-1523736-2

Molecular Formula

C₉H₁₄BNO₃

Molecular Weight

195.023 g/mol

Category

Organic Acids

Last updated

8/21/2026