9,9-Dihexylfluorene-2,7-diboronic acid

Also known as: (9,9-Dihexyl-9H-fluorene-2,7-diyl)diboronic acid, (7-borono-9,9-dihexylfluoren-2-yl)boronic acid, Boronic acid, B,B'-(9,9-dihexyl-9H-fluorene-2,7-diyl)bis-, 9,9-Di-n-hexylfluorene-2,7-diboronic acid, 9,9-dihexyl-2,7-diboronic acid, 9,9-dihexyl-9H-fluorene-2,7-diyldiboronic acid, MFCD03427279

9,9-Dihexylfluorene-2,7-diboronic acid (CAS 203927-98-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C25H36B2O4 and a molecular weight of 422.173 g/mol. Key properties include a melting point of >300ºC(lit.), a boiling point of 636.8±65.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 338.9±34.3 °C. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.

CAS No.: 203927-98-4
Jingsj CID: J-1993181-8
Molecular Formula: C₂₅H₃₆B₂O₄
Molecular Weight: 422.173 g/mol
Category: Organic Acids
Last updated: 11/3/2026

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Physicochemical Properties

Melting Point	>300ºC(lit.)
Boiling Point	636.8±65.0 °C at 760 mmHg
Density	1.1±0.1 g/cm3
Flash Point	338.9±34.3 °C
Exact Mass	422.279968
PSA	80.92000
LogP	9.25
Vapor Pressure	0.0±2.0 mmHg at 25°C
Refractive Index	1.568

Customs & Trade Information

HS Code	2916399090
Summary	2916399090 other aromatic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 9,9-Dihexylfluorene-2,7-diboronic acid?

The CAS number of 9,9-Dihexylfluorene-2,7-diboronic acid is 203927-98-4.

What are the molecular formula and molecular weight of 9,9-Dihexylfluorene-2,7-diboronic acid?

9,9-Dihexylfluorene-2,7-diboronic acid has molecular formula C25H36B2O4 and molecular weight 422.173 g/mol.

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

Last updated: 11/3/2026

How to cite: Jingsj. "9,9-Dihexylfluorene-2,7-diboronic acid (CAS 203927-98-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1993181-8 (accessed 2026-11-09).

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