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4,4,5,5-Tetramethyl-2-phenyl-1,3,2-dioxaborolane

Also known as: Phenylboronic Acid Pinacol Ester, (4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)benzene, Pinacol phenylboronate, Benzeneboronic acid, pinacol ester, 2-Phenyl-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, (Pinacolboryl)benzene

4,4,5,5-Tetramethyl-2-phenyl-1,3,2-dioxaborolane (CAS 24388-23-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C12H17BO2 and a molecular weight of 204.073 g/mol. Key properties include a melting point of 27-31 °C(lit.), a boiling point of 282.1±9.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 124.4±18.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
24388-23-6
Jingsj CID
J-30992-2
Molecular Formula
C12H17BO2
Molecular Weight
204.073 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point27-31 °C(lit.)
Boiling Point282.1±9.0 °C at 760 mmHg
Density1.0±0.1 g/cm3
Flash Point124.4±18.7 °C
Exact Mass204.132156
PSA18.46000
LogP1.98580
Vapor Pressure0.0±0.6 mmHg at 25°C
Refractive Index1.491

Customs & Trade Information

HS Code2934999090
Summary2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 4,4,5,5-Tetramethyl-2-phenyl-1,3,2-dioxaborolane?

The CAS number of 4,4,5,5-Tetramethyl-2-phenyl-1,3,2-dioxaborolane is 24388-23-6.

What are the molecular formula and molecular weight of 4,4,5,5-Tetramethyl-2-phenyl-1,3,2-dioxaborolane?

4,4,5,5-Tetramethyl-2-phenyl-1,3,2-dioxaborolane has molecular formula C12H17BO2 and molecular weight 204.073 g/mol.

What are the upstream and downstream products of 4,4,5,5-Tetramethyl-2-phenyl-1,3,2-dioxaborolane?

For 4,4,5,5-Tetramethyl-2-phenyl-1,3,2-dioxaborolane, Upstream Products: Iodobenzene, Bis(pinacolato)diboron, Bromobenzene; Downstream Products: 1-Bromo-3,5-diphenylbenzene, 2-Amino-5-phenylpyridine, 1,1':4',1'':4'',1''':4''',1''''-Quinquephenyl.

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

Last updated:

How to cite: Jingsj. "4,4,5,5-Tetramethyl-2-phenyl-1,3,2-dioxaborolane (CAS 24388-23-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-30992-2 (accessed 2026-11-09).

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