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2-(9,9-Dimethyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane

Also known as: 9,9-Dimethylfluorene-2-boronic acid pinacol ester, 1,3,2-Dioxaborolane, 2-(9,9-dimethyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl, FL-BE, FL-B, 2-(9,9-Dimethyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, 9,9-Dimethylfluorene-2-boronic acid pinacol ester, 95%, 2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-9,9-dimethylfluorene

2-(9,9-Dimethyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 569343-09-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C21H25BO2 and a molecular weight of 320.23300 g/mol. Key properties include a melting point of 133 ºC (heptane ), a boiling point of 443.057ºC at 760 mmHg, a density of 1.09g/cm3 and a flash point of 221.753ºC. GHS hazard statements: H413. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
569343-09-5
Jingsj CID
J-1965248-3
Molecular Formula
C21H25BO2
Molecular Weight
320.23300 g/mol
Category
Organic Acids
Last updated
8/21/2026
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Physicochemical Properties

Melting Point133 ºC (heptane )
Boiling Point443.057ºC at 760 mmHg
Density1.09g/cm3
Flash Point221.753ºC
Exact Mass320.19500
PSA18.46000
LogP4.29210
Refractive Index1.567

GHS Safety & Compliance

  • H413

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 2-(9,9-Dimethyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane?

The CAS number of 2-(9,9-Dimethyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane is 569343-09-5.

What are the molecular formula and molecular weight of 2-(9,9-Dimethyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane?

2-(9,9-Dimethyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane has molecular formula C21H25BO2 and molecular weight 320.23300 g/mol.

Is 2-(9,9-Dimethyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane hazardous?

2-(9,9-Dimethyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane has GHS hazard statements H413.

What are the upstream and downstream products of 2-(9,9-Dimethyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane?

For 2-(9,9-Dimethyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, Upstream Products: 2-Isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, 2-Bromo-9,9-dimethylfluorene, Bis(pinacolato)diboron.

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

Last updated:

How to cite: Jingsj. "2-(9,9-Dimethyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 569343-09-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1965248-3 (accessed 2026-11-09).

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