(4'-Pentyl[1,1'-biphenyl]-4-yl)boronic acid

Also known as: 4'-Pentyl-4-biphenylboronic acid, (4'-Pentyl-4-biphenylyl)boronic acid, 4-(4-pentylphenyl)benzeneboronic acid, [4-(4-pentylphenyl)phenyl]boronic acid, Boronic acid, (4'-pentyl[1,1'-biphenyl]-4-yl)-

(4'-Pentyl[1,1'-biphenyl]-4-yl)boronic acid (CAS 121554-18-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C17H21BO2 and a molecular weight of 268.158 g/mol. Key properties include a boiling point of 436.4±48.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 217.8±29.6 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 121554-18-5
Jingsj CID: J-1506824-3
Molecular Formula: C₁₇H₂₁BO₂
Molecular Weight: 268.158 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	436.4±48.0 °C at 760 mmHg
Density	1.1±0.1 g/cm3
Flash Point	217.8±29.6 °C
Exact Mass	268.163452
PSA	40.46000
LogP	5.93
Vapor Pressure	0.0±1.1 mmHg at 25°C
Refractive Index	1.567
Storage Conditions	2-8°C

Customs & Trade Information

HS Code	2931900090
Summary	2931900090. other organo-inorganic compounds. VAT:17.0%. Tax rebate rate:13.0%. Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward). MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of (4'-Pentyl[1,1'-biphenyl]-4-yl)boronic acid?

The CAS number of (4'-Pentyl[1,1'-biphenyl]-4-yl)boronic acid is 121554-18-5.

What are the molecular formula and molecular weight of (4'-Pentyl[1,1'-biphenyl]-4-yl)boronic acid?

(4'-Pentyl[1,1'-biphenyl]-4-yl)boronic acid has molecular formula C17H21BO2 and molecular weight 268.158 g/mol.

What are the upstream and downstream products of (4'-Pentyl[1,1'-biphenyl]-4-yl)boronic acid?

For (4'-Pentyl[1,1'-biphenyl]-4-yl)boronic acid, Upstream Products: 4-Bromo-4'-n-pentylbiphenyl, Triisopropyl borate, Tripropyl borate.

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'-Pentyl[1,1'-biphenyl]-4-yl)boronic acid (CAS 121554-18-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1506824-3 (accessed 2026-11-09).

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