4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)isoindolin-1-one

Also known as: 2,3-Dihydro-1H-isoindol-1-one-4-boronic acid pinacol ester, 1-Isoindolinone-4-boronic acid pinacol ester, 4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-2,3-dihydro-1H-isoindol-1-one, 4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1-isoindolinone, 1H-Isoindol-1-one, 2,3-dihydro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-

4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)isoindolin-1-one (CAS 765948-78-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C14H18BNO3 and a molecular weight of 259.109 g/mol. Key properties include a boiling point of 483.2±45.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 246.0±28.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 765948-78-5
Jingsj CID: J-887050-6
Molecular Formula: C₁₄H₁₈BNO₃
Molecular Weight: 259.109 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	483.2±45.0 °C at 760 mmHg
Density	1.2±0.1 g/cm3
Flash Point	246.0±28.7 °C
Exact Mass	259.137970
PSA	47.56000
LogP	1.55800
Vapor Pressure	0.0±1.2 mmHg at 25°C
Refractive Index	1.545

Customs & Trade Information

HS Code	2931900090
Summary	2931900090. other organo-inorganic compounds. VAT:17.0%. Tax rebate rate:13.0%. Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward). MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)isoindolin-1-one?

The CAS number of 4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)isoindolin-1-one is 765948-78-5.

What are the molecular formula and molecular weight of 4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)isoindolin-1-one?

4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)isoindolin-1-one has molecular formula C14H18BNO3 and molecular weight 259.109 g/mol.

What are the upstream and downstream products of 4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)isoindolin-1-one?

For 4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)isoindolin-1-one, Upstream Products: Bis(pinacolato)diboron, 4-bromoisoindolin-1-one, Methyl 3-bromo-2-methylbenzoate.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)isoindolin-1-one (CAS 765948-78-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-887050-6 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.