Description

Cyclopentylboronic Acid (CAS No. 63076-51-7) is a high-purity organoboron compound with the molecular formula C₅H₁₁BO₂. This white to off-white crystalline solid is a versatile boronic acid derivative widely used in Suzuki-Miyaura cross-coupling reactions, a cornerstone of modern synthetic organic chemistry. With a molecular weight of 113.95 g/mol, it offers excellent reactivity for forming carbon-carbon bonds in pharmaceutical intermediates, agrochemicals, and materials science applications. Our product is rigorously tested to ensure ≥95% purity (HPLC) and is supplied under inert conditions to maintain stability. Ideal for research and industrial-scale applications, it is packaged in amber glass vials or bulk quantities with proper desiccation to prevent moisture absorption. Storage at 2-8°C under nitrogen is recommended for long-term stability.

Properties

• CAS Number: 63076-51-7
• Complexity: 68.8
• IUPAC Name: cyclopentylboronic acid
• InChI: InChI=1S/C5H11BO2/c7-6(8)5-3-1-2-4-5/h5,7-8H,1-4H2
• InChI Key: VTTDFSNKIMAQTB-UHFFFAOYSA-N
• Exact Mass: 114.0852098
• Molecular Formula: C5H11BO2
• Molecular Weight: 113.95
• SMILES: B(C1CCCC1)(O)O
• Topological: 40.5
• Monoisotopic Mass: 114.0852098
• Synonyms: Cyclopentylboronic acid, 63076-51-7, DTXSID80370218, DTXCID70321254, 672-296-5, Boronic acid, cyclopentyl-, MFCD01074541, Cyclopentylboronicacid, Cyclopentylboronic Acid (contains varying amounts of Anhydride), cyclopentaneboronic acid, SCHEMBL257594, Cyclopentylboronic acid, >=95%, AKOS009157823, AB08034, AC-9536, CS-W000955, GS-6308, HY-W000955, NCGC00249448-01, SY023521, DB-009650, C2442, EN300-115787, F0001-1713, Z1147227731

Application

Cyclopentylboronic Acid serves as a crucial building block in pharmaceutical synthesis, particularly for introducing cyclopentyl groups via palladium-catalyzed coupling reactions. It finds extensive use in medicinal chemistry for developing bioactive molecules and drug candidates. The compound also plays a role in materials science for creating novel organic electronic materials. Its stability and reactivity make it valuable for constructing complex molecular architectures in academic and industrial research settings.

Safety and Hazards

GHS Hazard Statements

• H302 (12.5%): Harmful if swallowed [Warning Acute toxicity, oral]
• H312 (12.5%): Harmful in contact with skin [Warning Acute toxicity, dermal]
• H315 (87.5%): Causes skin irritation [Warning Skin corrosion/irritation]
• H319 (87.5%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
• H332 (12.5%): Harmful if inhaled [Warning Acute toxicity, inhalation]
• H335 (75%): 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, P317, P319, P321, P330, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501

Hazard Classes and Categories

• Acute Tox. 4 (12.5%)
• Acute Tox. 4 (12.5%)
• Skin Irrit. 2 (87.5%)
• Eye Irrit. 2A (87.5%)
• Acute Tox. 4 (12.5%)
• STOT SE 3 (75%)

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