1,4-Dimethyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole

Also known as: 1,4-Dimethylpyrazole-5-boronic Acid Pinacol Ester, (1,4-Dimethyl-1H-pyrazol-5-yl)boronic acid pinacol ester, 1,4-Dimethyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole, 1,4-Dimethyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazole, 1,4-dimethyl-5-(tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole, 1H-Pyrazole, 1,4-dimethyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-

1,4-Dimethyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (CAS 1047644-76-7) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H19BN2O2 and a molecular weight of 222.092 g/mol. Key properties include a boiling point of 325.8±30.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 150.8±24.6 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1047644-76-7
Jingsj CID: J-1048016-7
Molecular Formula: C₁₁H₁₉BN₂O₂
Molecular Weight: 222.092 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	325.8±30.0 °C at 760 mmHg
Density	1.0±0.1 g/cm3
Flash Point	150.8±24.6 °C
Exact Mass	222.153961
PSA	36.28000
LogP	1.02770
Vapor Pressure	0.0±0.7 mmHg at 25°C
Refractive Index	1.504
Storage Conditions	2-8°C

Customs & Trade Information

HS Code	2934999090
Summary	2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 1,4-Dimethyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole?

The CAS number of 1,4-Dimethyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole is 1047644-76-7.

What are the molecular formula and molecular weight of 1,4-Dimethyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole?

1,4-Dimethyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole has molecular formula C11H19BN2O2 and molecular weight 222.092 g/mol.

What are the upstream and downstream products of 1,4-Dimethyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole?

For 1,4-Dimethyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole, Upstream Products: 1,4-Dimethyl-1H-pyrazole, 2-Isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "1,4-Dimethyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (CAS 1047644-76-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1048016-7 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.