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Atomfair 1H-Pyrazole-5-boronic acid C3H5BN2O2 CAS 376584-63-3

1H-Pyrazole-5-boronic acid (CAS No. 376584-63-3) is a high-purity boronic acid derivative with the molecular formula C3H5BN2O2and IUPAC name 1H-pyrazol-5-ylboronic acid . This heterocyclic boronic acid is a versatile building block in organic synthesis, particularly in Suzuki-Miyaura cross-coupling reactions, enabling the formation of carbon-carbon bonds with high efficiency. Its pyrazole ring structure enhances its utility in pharmaceutical and agrochemical research, where it serves as a key intermediate for the development of bioactive compounds. Available in various quantities, this compound is rigorously tested for purity and stability, ensuring reliable performance in sensitive applications. Store in a cool, dry place under inert conditions…

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Description

1H-Pyrazole-5-boronic acid (CAS No. 376584-63-3) is a high-purity boronic acid derivative with the molecular formula C3H5BN2O2 and IUPAC name 1H-pyrazol-5-ylboronic acid. This heterocyclic boronic acid is a versatile building block in organic synthesis, particularly in Suzuki-Miyaura cross-coupling reactions, enabling the formation of carbon-carbon bonds with high efficiency. Its pyrazole ring structure enhances its utility in pharmaceutical and agrochemical research, where it serves as a key intermediate for the development of bioactive compounds. Available in various quantities, this compound is rigorously tested for purity and stability, ensuring reliable performance in sensitive applications. Store in a cool, dry place under inert conditions to maintain optimal quality.

Properties

  • CAS Number: 376584-63-3
  • Complexity: 79.7
  • IUPAC Name: 1H-pyrazol-5-ylboronic acid
  • InChI: InChI=1S/C3H5BN2O2/c7-4(8)3-1-2-5-6-3/h1-2,7-8H,(H,5,6)
  • InChI Key: NEUWPDLMDVINSN-UHFFFAOYSA-N
  • Exact Mass: 112.0444076
  • Molecular Formula: C3H5BN2O2
  • Molecular Weight: 111.90
  • SMILES: B(C1=CC=NN1)(O)O
  • Topological: 69.1
  • Monoisotopic Mass: 112.0444076
  • Synonyms: 1H-PYRAZOLE-5-BORONIC ACID, 670-423-9, 376584-63-3, (1H-Pyrazol-3-yl)boronic acid, Pyrazole-3-boronic acid, 1H-Pyrazol-3-ylboronic acid, 1H-Pyrazole-3-Boronic Acid, (1H-pyrazol-5-yl)boronic acid, 1H-pyrazol-5-ylboronic acid, 724710-02-5, 1239363-47-3, 1H-Pyrazol-3-yl boronic acid, (1H-Pyrazol-5-yl)boronicacid, pyrazol-3-ylboronic acid, 1H-pyrazol-5-yl-5-boronic acid, CHEMBL2071020, MFCD07368247, Boronic acid, 1H-pyrazol-3-yl-, pyrazole-3-boronic, pyrazoleboronic acid, pyrazole boronic acid, 3-Pyrazoleboronicacid, 3-pyrazole boronic acid, 5-pyrazole boronic acid, pyrazole-5-boronic acid, 3-Pyrazole-boronic acid, 1H-pyrazole boronic acid, 1H-pyrazol-3-boronic acid, 1H-pyrazol-5-boronic acid, 1H-pyrazole-5 boronic acid, 1-H-Pyrazole-3-boronic acid, 1H-pyrazole-3-ylboronic acid, 3-PYRAZOLEBORONIC ACID, SCHEMBL130327, SCHEMBL245770, (1H-Pyrazol-3-yl)boronicacid, 1H-pyrazol-5-yl boronic acid, 1H-pyrazole-5-yl boronic acid, DTXSID30460052, boronic acid, 1H-pyrazol-5-yl-, NEUWPDLMDVINSN-UHFFFAOYSA-N, B-(1H-pyrazol-3-yl)boronic acid, ALBB-012240, BCP11804, CS-D1217, BDBM50390935, CS1248, MFCD02020768, RB2080, SBB013805, STK689429, AKOS000558042, AKOS005173603, AB10622, BS-2062, GS-6563, 1H-Pyrazole-5-boronic acid, AldrichCPR, AC-25835, SY009361, DB-008763, ST4132495, EN300-200298, F31413, A823811, PYRAZOLE-3-BORONIC ACPUBCHEM_EXT_DATASOURCE_REGID

Application

1H-Pyrazole-5-boronic acid is widely used in pharmaceutical research as a precursor for the synthesis of pyrazole-containing drug candidates. It is also employed in agrochemical development for creating novel pesticides and herbicides. Additionally, this compound serves as a critical reagent in material science for designing functionalized polymers and advanced materials.

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. 2A (100%)
  • STOT SE 3 (100%)

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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

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  • 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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