Description

Boronic acid, (4-ethylphenyl)- (CAS No. 63139-21-9) is a high-purity organic boronic acid derivative with the molecular formula C₈H₁₁BO₂. This compound, also known as (4-ethylphenyl)boronic acid, is a valuable building block in synthetic organic chemistry, particularly in Suzuki-Miyaura cross-coupling reactions. Its structure features a boronic acid functional group attached to a 4-ethylphenyl moiety, making it an essential reagent for pharmaceutical, agrochemical, and materials science research. Our product is rigorously tested to ensure superior quality, with ≥95% purity (HPLC), and is supplied as a white to off-white crystalline powder. Ideal for researchers seeking reliable and efficient boronic acid reagents for catalysis, ligand design, and molecular recognition studies. Store in a cool, dry place under inert conditions to maintain stability.

Properties

• CAS Number: 63139-21-9
• Complexity: 109
• IUPAC Name: (4-ethylphenyl)boronic acid
• InChI: InChI=1S/C8H11BO2/c1-2-7-3-5-8(6-4-7)9(10)11/h3-6,10-11H,2H2,1H3
• InChI Key: RZCPLOMUUCFPQA-UHFFFAOYSA-N
• Exact Mass: 150.0852098
• Molecular Formula: C8H11BO2
• Molecular Weight: 149.98
• SMILES: B(C1=CC=C(C=C1)CC)(O)O
• Topological: 40.5
• Monoisotopic Mass: 150.0852098
• Synonyms: (4-ethylphenyl)boronic acid, Boronic acid, (4-ethylphenyl)-, 613-145-5, 4-Ethylphenylboronic acid, 63139-21-9, 4-Ethylbenzeneboronic Acid, 4-ethylphenyl boronic acid, MFCD00859377, CHEMBL1952294, (4-Ethylphenyl)Boranediol, P-ETHYLPHENYLBORONIC ACID, 4-ethylbenzenboronic acid, 4-ethyl-phenylboronic acid, 4-ethylphenyl-boronic acid, 4-ethylbenzene boronic acid, 4-ethyl phenyl boronic acid, 4-ethyl-phenyl boronic acid, AKOS BRN-0037, SCHEMBL150306, B-(4-ethylphenyl)-boronic acid, DTXSID30370243, ALBB-006104, BCP22765, BDBM50364281, SBB048066, STK052850, AKOS000265226, AB07463, AS-2628, CS-W018163, AC-22301, BP-12773, SY007912, DB-009540, E0720, EN300-99947, Z336079952, 4-Ethylphenylboronic Acid (contains varying amounts of Anhydride), 4-Ethylphenylboronic acid(contains varying amounts of Anhydride)

Application

(4-Ethylphenyl)boronic acid is widely used as a key intermediate in Suzuki-Miyaura cross-coupling reactions to form biaryl compounds, crucial in drug discovery and material science. It serves as a versatile precursor in the synthesis of pharmaceuticals, agrochemicals, and functionalized polymers. Researchers also utilize it in the development of sensors and catalysts due to its ability to form reversible covalent bonds with diols and other Lewis bases.

Safety and Hazards

GHS Hazard Statements

• H302 (61.1%): Harmful if swallowed [Warning Acute toxicity, oral]
• H315 (44.4%): Causes skin irritation [Warning Skin corrosion/irritation]
• H319 (94.4%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
• H335 (38.9%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract 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, and P501

Hazard Classes and Categories

• Acute Tox. 4 (61.1%)
• Skin Irrit. 2 (44.4%)
• Eye Irrit. 2A (94.4%)
• STOT SE 3 (38.9%)

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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.