4-(Phenylethynyl)phenylboronic acid pinacol ester

Also known as: 4,4,5,5-Tetramethyl-2-(4-phenylethynyl-phenyl)-[1,3,2]dioxaborolane, 4,4,5,5-tetramethyl-2-[4-(2-phenylethynyl)phenyl]-1,3,2-dioxaborolane, 4-(Phenylethynyl)benzeneboronic acid pinacol ester, AMTB199, M-1260

4-(Phenylethynyl)phenylboronic acid pinacol ester (CAS 1190376-20-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C20H21BO2 and a molecular weight of 304.19100 g/mol. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1190376-20-5
Jingsj CID: J-1022609-2
Molecular Formula: C₂₀H₂₁BO₂
Molecular Weight: 304.19100 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Exact Mass	304.16300
PSA	18.46000
LogP	3.38560

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-(Phenylethynyl)phenylboronic acid pinacol ester?

The CAS number of 4-(Phenylethynyl)phenylboronic acid pinacol ester is 1190376-20-5.

What are the molecular formula and molecular weight of 4-(Phenylethynyl)phenylboronic acid pinacol ester?

4-(Phenylethynyl)phenylboronic acid pinacol ester has molecular formula C20H21BO2 and molecular weight 304.19100 g/mol.

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-(Phenylethynyl)phenylboronic acid pinacol ester (CAS 1190376-20-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1022609-2 (accessed 2026-11-09).

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