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

Also known as: Pyrazole-4-boronic acid pinacol ester, 1H-Pyrazole-4-boronic acid pinacol ester, 4-Pyrazoleboronic acid pinacol ester, 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazole, 4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole, 2-(1H-Pyrazole-4-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, 2-(4-Pyrazolyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, 4,4,5,5-Tetramethyl-2-(1H-pyrazol-4-yl)-1,3,2-dioxaborolane, MFCD03453063

4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (CAS 269410-08-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H15BN2O2 and a molecular weight of 194.04 g/mol. Key properties include a melting point of 142-146 °C(lit.), a boiling point of 335.4±15.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 156.6±20.4 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 269410-08-4
Jingsj CID: J-32811-0
Molecular Formula: C₉H₁₅BN₂O₂
Molecular Weight: 194.04 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	142-146 °C(lit.)
Boiling Point	335.4±15.0 °C at 760 mmHg
Density	1.1±0.1 g/cm3
Flash Point	156.6±20.4 °C
Exact Mass	194.122665
PSA	47.14000
LogP	0.70890
Vapor Pressure	0.0±0.7 mmHg at 25°C
Refractive Index	1.487
Additional Property	insoluble

Customs & Trade Information

HS Code	2933199090
Summary	2933199090. other compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure. 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 4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole?

The CAS number of 4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole is 269410-08-4.

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

4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole has molecular formula C9H15BN2O2 and molecular weight 194.04 g/mol.

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. "4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (CAS 269410-08-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-32811-0 (accessed 2026-11-09).

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