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Atomfair 4-Cyclopropylbenzeneboronic acid C9H11BO2 CAS 302333-80-8

4-Cyclopropylbenzeneboronic acid (CAS No. 302333-80-8) is a high-purity boronic acid derivative with the molecular formula C9H11BO2. This compound, also known as (4-cyclopropylphenyl)boronic acid, is a valuable building block in organic synthesis and pharmaceutical research. Its unique cyclopropyl-substituted aromatic ring structure makes it an ideal candidate for Suzuki-Miyaura cross-coupling reactions, enabling the formation of biaryl compounds with high efficiency and selectivity. The product is supplied as a white to off-white crystalline powder, rigorously tested for purity (typically ≥95% by HPLC) and stability under recommended storage conditions (2-8°C in a dry environment). Suitable for use in medicinal chemistry, materials science, and as…

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Description

4-Cyclopropylbenzeneboronic acid (CAS No. 302333-80-8) is a high-purity boronic acid derivative with the molecular formula C9H11BO2. This compound, also known as (4-cyclopropylphenyl)boronic acid, is a valuable building block in organic synthesis and pharmaceutical research. Its unique cyclopropyl-substituted aromatic ring structure makes it an ideal candidate for Suzuki-Miyaura cross-coupling reactions, enabling the formation of biaryl compounds with high efficiency and selectivity. The product is supplied as a white to off-white crystalline powder, rigorously tested for purity (typically ≥95% by HPLC) and stability under recommended storage conditions (2-8°C in a dry environment). Suitable for use in medicinal chemistry, materials science, and as a reagent in catalytic systems, this boronic acid derivative is packaged under inert gas to ensure long-term quality. Available in research quantities from milligrams to kilograms, with custom synthesis and bulk options upon request.

Properties

  • CAS Number: 302333-80-8
  • Complexity: 149
  • IUPAC Name: (4-cyclopropylphenyl)boronic acid
  • InChI: InChI=1S/C9H11BO2/c11-10(12)9-5-3-8(4-6-9)7-1-2-7/h3-7,11-12H,1-2H2
  • InChI Key: YNLGFXOBRXSMJZ-UHFFFAOYSA-N
  • Exact Mass: 162.0852098
  • Molecular Formula: C9H11BO2
  • Molecular Weight: 162.00
  • SMILES: B(C1=CC=C(C=C1)C2CC2)(O)O
  • Topological: 40.5
  • Monoisotopic Mass: 162.0852098
  • Synonyms: 4-Cyclopropylbenzeneboronic acid, 828-108-0, 302333-80-8, 4-CYCLOPROPYLPHENYLBORONIC ACID, (4-cyclopropylphenyl)boronic Acid, Boronic acid, B-(4-cyclopropylphenyl)-, 4-CYCLOPROPYL-BENZENEBORONIC ACID, MFCD01309064, 4-Cyclopropyl-phenylboronic acid, Boronic acid, (4-cyclopropylphenyl)-, (4-Cyclopropylphenyl)boronicacid, SCHEMBL938629, 4-cyclopropyl phenylboronic acid, DTXSID60385961, YNLGFXOBRXSMJZ-UHFFFAOYSA-N, CCG-2660, B-(4-Cyclopropylphenyl)-boronic Acid, AKOS006276750, AC-30698, AS-46749, SY020549, DB-367722, CS-0040763, 4-cyclopropyl-benzeneboronic acid, AldrichCPR, F10371, EN300-3219449

Application

4-Cyclopropylbenzeneboronic acid is widely used as a key intermediate in Suzuki-Miyaura cross-coupling reactions for the synthesis of complex biaryl structures in pharmaceutical development. The cyclopropyl moiety enhances metabolic stability in drug candidates, making this compound valuable in medicinal chemistry for CNS and antiviral research. It also serves as a precursor for functional materials in OLED and semiconductor applications.

Safety and Hazards

GHS Hazard Statements

  • H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]
  • H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
  • H335 (100%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]

Precautionary Statements

  • P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501

Hazard Classes and Categories

  • Skin Irrit. 2 (100%)
  • Eye Irrit. 2 (100%)
  • STOT SE 3 (100%)

If you are interested or have any questions, please contact us at support@atomfair.com

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

Disclaimer

Intended Use & Restrictions

This product is sold exclusively for laboratory research, analytical testing, or non-commercial purposes.

  • Strictly prohibited: Resale, repackaging, or formulation into commercial products.
  • Not approved for human/animal use, diagnostics, or manufacturing (including pharmaceuticals, agrochemicals, or consumer goods).

Patent & Regulatory Compliance

Certain molecules may be protected by active patents or regulatory restrictions.

  • Buyers must independently verify patent status (e.g., via USPTO/EPO/CNIPA) and comply with local laws.
  • Atomfair LLC does not provide legal assurances regarding patent non-infringement or jurisdictional compliance.

Liability Release

By purchasing, the buyer agrees to:

  • Use this product only as permitted by law.
  • Indemnify Atomfair LLC against all claims arising from misuse, patent infringement, or regulatory violations.

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