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4-Pyrazoleboronic Acid Pinacol Ester

CAS #:

Linear Formula:


MDL Number:


EC No.:



(2N) 99% 4-Pyrazoleboronic Acid Pinacol Ester
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(3N) 99.9% 4-Pyrazoleboronic Acid Pinacol Ester
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(4N) 99.99% 4-Pyrazoleboronic Acid Pinacol Ester
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(5N) 99.999% 4-Pyrazoleboronic Acid Pinacol Ester
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4-Pyrazoleboronic Acid Pinacol Ester Properties (Theoretical)

Compound Formula C9H15BN2O2
Molecular Weight 194.04
Appearance White to tan powder, crystals, or chunks
Melting Point 145-149 °C
Boiling Point 335.373 °C
Density 1.091 g/cm3
Solubility in H2O N/A
Exact Mass 194.122658
Monoisotopic Mass 194.122658

4-Pyrazoleboronic Acid Pinacol Ester Health & Safety Information

Signal Word Warning
Hazard Statements H315-H319-H335
Hazard Codes Xi
Risk Codes 36/37/38
Safety Statements 26-36
RTECS Number N/A
Transport Information N/A
WGK Germany 3

About 4-Pyrazoleboronic Acid Pinacol Ester

4-Pyrazoleboronic Acid Pinacol Ester is generally immediately available in most volumes. High purity, submicron and nanopowder forms may be considered. American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. Typical and custom packaging is available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.

4-Pyrazoleboronic Acid Pinacol Ester Synonyms

1H-Pyrazole-4-boronic acid pinacol ester, 4, 4, 5, 5-Tetramethyl-2-(1H-pyrazol-2-yl)-1, 3, 2-dioxaborolane, 4, 4, 5, 5-Tetramethyl-2-(1H-pyrazol-4-yl)-1, 3, 2-dioxaborolane, 4, 4, 5, 5-Tetramethyl-2-(pyrazol-4-yl)-1, 3, 2-dioxaborolane, 4-(4, 4, 5, 5-Tetramethyl-1, 3, 2-dioxaborolan-2-yl)pyrazole, Pyrazol-4-ylboronic acid pinacol ester

Chemical Identifiers

Linear Formula (CH3)4C2O2BC3N2H3
MDL Number MFCD03453063
EC No. N/A
Pubchem CID 2774010
IUPAC Name 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole
InchI Identifier InChI=1S/C9H15BN2O2/c1-8(2)9(3,4)14-10(13-8)7-5-11-12-6-7/h5-6H,1-4H3,(H,11,12)

Packaging Specifications

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Safety Data Sheet (SDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes, and 36,000 lb. tanker trucks.

Related Elements

See more Boron products. Boron Bohr ModelBoron (atomic symbol: B, atomic number: 5) is a Block P, Group 13, Period 2 element with an atomic weight of 10.81. The number of electrons in each of boron's shells is 2, 3 and its electron configuration is [He] 2s2 2p1. The boron atom has a radius of 90 pm and a Van der Waals radius of 192 pm. Boron was discovered by Joseph Louis Gay-Lussac and Louis Jacques Thénard in 1808. It was first isolated by Humphry Davy, also in 1808. Boron is classified as a metalloid is not found naturally on earth. Elemental BoronAlong with carbon and nitrogen, boron is one of the few elements in the periodic table known to form stable compounds featuring triple bonds. Boron has an energy band gap of 1.50 to 1.56 eV, which is higher than that of either silicon or germanium. Boron is found in borates, borax, boric acid, colemanite, kernite, and ulexite.The name Boron originates from a combination of carbon and the Arabic word buraqu meaning borax.


October 21, 2019
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