Bis(pinacolato)diboron

双联频哪醇基二硼

Also known as: B2pin2, 4,4,4',4',5,5,5',5'-Octamethyl-2,2'-bi-1,3,2-dioxaborolane, Diboron pinacol ester, Bis(pinacolato)diborane

Bis(pinacolato)diboron (CAS 78183-34-3) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C12H24B2O4 and a molecular weight of 253.93900 g/mol. It is also known as B2pin2, 4,4,4',4',5,5,5',5'-Octamethyl-2,2'-bi-1,3,2-dioxaborolane and Diboron pinacol ester. Key property: a melting point of 137-140ºC(lit.). No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 78183-34-3
Jingsj CID: J-1044917-6
Molecular Formula: C₁₂H₂₄B₂O₄
Chinese Name: 双联频哪醇基二硼
Molecular Weight: 253.93900 g/mol
Category: Alcohols
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	137-140ºC(lit.)

Frequently Asked Questions

What is the CAS number of Bis(pinacolato)diboron?

The CAS number of Bis(pinacolato)diboron is 78183-34-3.

What are the molecular formula and molecular weight of Bis(pinacolato)diboron?

Bis(pinacolato)diboron has molecular formula C12H24B2O4 and molecular weight 253.93900 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "Bis(pinacolato)diboron (CAS 78183-34-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1044917-6 (accessed 2026-10-25).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.