4,4,5,5-tetramethyl-2-(4-(methylsulfonyl)phenyl)-1,3,2-dioxaborolane

Also known as: 2-(4-methanesulfonylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, 4-(methanesulfonyl)phenylboronic acid pinacol ester, 4-methylsulfonylphenylboronic acid pinacol ester, 2-(4-methylsulfonylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, 4,4,5,5-tetramethyl-2-(4-(methylsulfonyl)phenyl)-1,3,2-dioxaborolane

4,4,5,5-tetramethyl-2-(4-(methylsulfonyl)phenyl)-1,3,2-dioxaborolane (CAS 603143-27-7) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C13H19BO4S and a molecular weight of 282.164 g/mol. Key properties include a melting point of 162-163ºC, a boiling point of 421.1±37.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 208.5±26.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 603143-27-7
Jingsj CID: J-1993489-5
Molecular Formula: C₁₃H₁₉BO₄S
Molecular Weight: 282.164 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	162-163ºC
Boiling Point	421.1±37.0 °C at 760 mmHg
Density	1.2±0.1 g/cm3
Flash Point	208.5±26.5 °C
Exact Mass	282.109711
PSA	60.98000
LogP	2.47010
Vapor Pressure	0.0±1.0 mmHg at 25°C
Refractive Index	1.518

Customs & Trade Information

HS Code	2934999090
Summary	2934999090. 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-(4-(methylsulfonyl)phenyl)-1,3,2-dioxaborolane?

The CAS number of 4,4,5,5-tetramethyl-2-(4-(methylsulfonyl)phenyl)-1,3,2-dioxaborolane is 603143-27-7.

What are the molecular formula and molecular weight of 4,4,5,5-tetramethyl-2-(4-(methylsulfonyl)phenyl)-1,3,2-dioxaborolane?

4,4,5,5-tetramethyl-2-(4-(methylsulfonyl)phenyl)-1,3,2-dioxaborolane has molecular formula C13H19BO4S and molecular weight 282.164 g/mol.

What are the upstream and downstream products of 4,4,5,5-tetramethyl-2-(4-(methylsulfonyl)phenyl)-1,3,2-dioxaborolane?

For 4,4,5,5-tetramethyl-2-(4-(methylsulfonyl)phenyl)-1,3,2-dioxaborolane, Upstream Products: 4-Chlorophenyl methyl sulfone, Bis(pinacolato)diboron.

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. "4,4,5,5-tetramethyl-2-(4-(methylsulfonyl)phenyl)-1,3,2-dioxaborolane (CAS 603143-27-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1993489-5 (accessed 2026-11-09).

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