1-Ethyl-1H-pyrazole-4-boronic acid pinacol es… 847818-70-6

Name: 1-Ethyl-1H-pyrazole-4-boronic acid pinacol ester, 97%
Brand: Vaqora Chemicals
SKU: VQ-011018

About 1-Ethyl-1H-pyrazole-4-boronic acid pinacol ester, 97%

1-Ethyl-1H-pyrazole-4-boronic acid pinacol ester (CAS 847818-70-6) is a boronic acid building block offered by Vaqora Chemicals, specified at 97% purity. Its molecular formula is C11H19BN2O2 and its molecular weight is 222.09 g/mol. The IUPAC name is 1-ethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazole. Common synonyms include 1-Ethylpyrazole-4-boronic acid pinacol ester and 1-ethyl-pyrazole-4-boronic acid pinacol ester.

The material typically appears as powder or crystals. Literature values give a melting point of 44-49 °C. Store in a tightly closed container in a cool, dry and well-ventilated place. Under GHS it is labelled “Warning”, so handle it with suitable PPE and consult the SDS.

Key uses span pharmaceutical synthesis and organic synthesis. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

Standard pack sizes are 250 mg, 1 g, 5 g and 1 kg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

Pharmaceutical synthesis
Organic synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	1-Ethyl-1H-pyrazole-4-boronic acid pinacol ester, 97%
Catalogue No.	VQ-011018
CAS Number	847818-70-6
IUPAC name	1-ethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazole
Molecular formula	C₁₁H₁₉BN₂O₂
Molecular weight	222.09 g/mol
Exact mass	222.154
Purity / assay	97%
HSN code	29329900
InChIKey	UGCRHVPUHAXAAE-UHFFFAOYSA-N
SMILES	B1(OC(C(O1)(C)C)(C)C)C2=CN(N=C2)CC
PubChem CID	11379045

Physical properties
Physical form	Crystalline
Appearance	Powder or crystals
Melting point	44-49 °C
H-bond donors / acceptors	0 / 3
TPSA	36.3 Å²
Synonyms	1-Ethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole, 1-Ethyl-1H-pyrazole-4-boronic acid, pinacol ester, 1-Ethylpyrazole-4-boronic acid pinacol ester, 1-ethyl-4-(tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole, 1-Ethyl-1H-pyrazole-4-boronic acid pinacol ester, 97%, 1-ethyl-4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-1H-pyrazole, 1-ethyl-pyrazole-4-boronic acid pinacol ester, 2-(1-ethylpyrazol-4-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, 1H-Pyrazole,1-ethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory 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, 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 1-Ethyl-1H-pyrazole-4-boronic acid pinacol ester, 97%?

The CAS Registry Number of 1-Ethyl-1H-pyrazole-4-boronic acid pinacol ester, 97% is 847818-70-6. It is also known as 1-Ethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole, 1-Ethyl-1H-pyrazole-4-boronic acid, pinacol ester, 1-Ethylpyrazole-4-boronic acid pinacol ester.

What is the molecular formula and molecular weight of 1-Ethyl-1H-pyrazole-4-boronic acid pinacol ester, 97%?

1-Ethyl-1H-pyrazole-4-boronic acid pinacol ester, 97% has the molecular formula C11H19BN2O2 and a molecular weight of 222.09 g/mol. Its IUPAC name is 1-ethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazole.

Which grade and pack sizes of 1-Ethyl-1H-pyrazole-4-boronic acid pinacol ester, 97% can I order?

We supply 1-Ethyl-1H-pyrazole-4-boronic acid pinacol ester, 97% in (97%) grade, in 250 mg, 1 g, 5 g, 1 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with 1-Ethyl-1H-pyrazole-4-boronic acid pinacol ester, 97%?

Yes. Every lot of 1-Ethyl-1H-pyrazole-4-boronic acid pinacol ester, 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 1-Ethyl-1H-pyrazole-4-boronic acid pinacol ester, 97% be shipped internationally?

Yes. 1-Ethyl-1H-pyrazole-4-boronic acid pinacol ester, 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.