3,4-Dimethylphenylboronic acid, 97%

About 3,4-Dimethylphenylboronic acid, 97%

3,4-Dimethylphenylboronic acid is a boronic acid building block carrying the CAS registry number 55499-43-9, specified at 98% purity. Formula C8H11BO2, molecular weight 149.98 g/mol. Alternative names: 3,4-Dimethylbenzeneboronic acid and (3,4-dimethylphenyl)boranediol.

The material typically appears as white to almost white powder or crystals. Key physical data: a melting point of 220 °C. Store sealed in a dry, well-ventilated location away from incompatible materials. Under GHS it is labelled “Danger”, so handle it with suitable PPE and consult the SDS.

It is commonly used for organic synthesis and API synthesis. It is used across pharmaceutical manufacturing and academic and industrial research.

Standard pack sizes are 1 g, 5 g and 100 g, and every batch ships with a Certificate of Analysis (COA) and we export worldwide. A Safety Data Sheet (SDS) and technical specifications are available on request.

Typical applications

Organic synthesis
API synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	3,4-Dimethylphenylboronic acid, 97%
Catalogue No.	VQ-011030
CAS Number	55499-43-9
IUPAC name	(3,4-dimethylphenyl)boronic acid
Molecular formula	C₈H₁₁BO₂
Molecular weight	149.98 g/mol
Exact mass	150.0852
Purity / assay	98%
HSN code	29329900
InChIKey	KDVZJKOYSOFXRV-UHFFFAOYSA-N
SMILES	B(C1=CC(=C(C=C1)C)C)(O)O
PubChem CID	2734348

Physical properties
Physical form	Crystalline
Appearance	White to almost white powder or crystals
Melting point	220 °C
H-bond donors / acceptors	2 / 2
TPSA	40.5 Å²
Synonyms	3,4-Dimethylbenzeneboronic acid, 3,4-Dimethylphenylboronic acid, (3,4-dimethylphenyl)boranediol, Boronic acid, (3,4-dimethylphenyl)-, 3.4-dimethylbenzeneboronic acid, 3,4-dimethyl phenylboronic acid, 3,4-dimethylphenyl boronic acid, 3,4-dimethylphenylboronic acid, AldrichCPR

Safety & hazard information (GHS)

Corrosive

Harmful / irritant

Signal word: Danger

Hazard statements

H302Harmful if swallowed
H315Causes skin irritation
H318Causes serious eye damage
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, P305 + P354 + P338, P317, 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 3,4-Dimethylphenylboronic acid, 97%?

The CAS Registry Number of 3,4-Dimethylphenylboronic acid, 97% is 55499-43-9. It is also known as 3,4-Dimethylbenzeneboronic acid, 3,4-Dimethylphenylboronic acid, (3,4-dimethylphenyl)boranediol.

What is the molecular formula and molecular weight of 3,4-Dimethylphenylboronic acid, 97%?

3,4-Dimethylphenylboronic acid, 97% has the molecular formula C8H11BO2 and a molecular weight of 149.98 g/mol. Its IUPAC name is (3,4-dimethylphenyl)boronic acid.

Which grade and pack sizes of 3,4-Dimethylphenylboronic acid, 97% can I order?

We supply 3,4-Dimethylphenylboronic acid, 97% in (98%) grade, in 1 g, 5 g, 100 g packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with 3,4-Dimethylphenylboronic acid, 97%?

Yes. Every lot of 3,4-Dimethylphenylboronic 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 3,4-Dimethylphenylboronic acid, 97% be shipped internationally?

Yes. 3,4-Dimethylphenylboronic 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.