4-Ethylphenylboronic acid, 97%

About 4-Ethylphenylboronic acid, 97%

4-Ethylphenylboronic acid is a boronic acid building block carrying the CAS registry number 63139-21-9, specified at 97% purity. With the molecular formula C8H11BO2, it has a molar mass of 149.98 g/mol. Alternative names: (ρ-Ethylphenyl)boronic acid and 4-Ethylbenzeneboronic acid.

The material typically appears as white to light yellow to light orange powder or crystals. Literature values give a melting point of 141 °C. Store sealed in a dry, well-ventilated location away from incompatible materials. It carries the GHS signal word “Warning” with 4 hazard statements. Review the Safety Data Sheet before use.

Typical applications include organic synthesis and API synthesis. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

Available in 5 g, 25 g, 100 g and 1 kg packs, 4-Ethylphenylboronic acid is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

Organic synthesis
API synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	4-Ethylphenylboronic acid, 97%
Catalogue No.	VQ-011052
CAS Number	63139-21-9
IUPAC name	(4-ethylphenyl)boronic acid
Molecular formula	C₈H₁₁BO₂
Molecular weight	149.98 g/mol
Exact mass	150.0852
Purity / assay	97%
HSN code	29399900
InChIKey	RZCPLOMUUCFPQA-UHFFFAOYSA-N
SMILES	B(C1=CC=C(C=C1)CC)(O)O
PubChem CID	2734352

Physical properties
Physical form	Crystalline
Appearance	White to light yellow to light orange powder or crystals
Melting point	141 °C
H-bond donors / acceptors	2 / 2
TPSA	40.5 Å²
Synonyms	(ρ-Ethylphenyl)boronic acid, 4-Ethylbenzeneboronic acid, Boronic acid, (4-ethylphenyl)-, 4-ethylphenyl boronic acid, 4-ethylbenzenboronic acid, 4-ethylbenzene boronic acid, 4-ethyl-phenylboronic acid, 4-ethylphenyl-boronic acid, 4-ethyl phenyl boronic acid, 4-ethyl-phenyl boronic acid, B-(4-ethylphenyl)-boronic acid, 4-Ethylbenzeneboronic Acid (contains varying amounts of Anhydride)

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P270, P271, P280, P301 + P317, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P330, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of 4-Ethylphenylboronic acid, 97%?

The CAS Registry Number of 4-Ethylphenylboronic acid, 97% is 63139-21-9. It is also known as (ρ-Ethylphenyl)boronic acid, 4-Ethylbenzeneboronic acid, Boronic acid, (4-ethylphenyl)-.

What is the molecular formula and molecular weight of 4-Ethylphenylboronic acid, 97%?

4-Ethylphenylboronic acid, 97% has the molecular formula C8H11BO2 and a molecular weight of 149.98 g/mol. Its IUPAC name is (4-ethylphenyl)boronic acid.

Which grade and pack sizes of 4-Ethylphenylboronic acid, 97% can I order?

We supply 4-Ethylphenylboronic acid, 97% in (97%) grade, in 5 g, 25 g, 100 g, 1 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with 4-Ethylphenylboronic acid, 97%?

Yes. Every lot of 4-Ethylphenylboronic acid, 97% is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can 4-Ethylphenylboronic acid, 97% be shipped internationally?

Yes. 4-Ethylphenylboronic acid, 97% is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.