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(1-Methyl-3-(trifluoromethyl)-1H-pyrazol-5-yl)boronic acid

Also known as: 1-Methyl-3-trifluoromethylpyrazole-5-boronic acid, 1-Methyl-3-trifluoromethyl-1H-pyrazole-5-boronic acid, B-[1-methyl-3-(trifluoromethyl)-1H-pyrazol-5-yl]boronic acid, [1-Methyl-3-(trifluoromethyl)-1H-pyrazol-5-yl]boronic acid, [2-methyl-5-(trifluoromethyl)pyrazol-3-yl]boronic acid

(1-Methyl-3-(trifluoromethyl)-1H-pyrazol-5-yl)boronic acid (CAS 344591-91-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H6BF3N2O2 and a molecular weight of 193.919 g/mol. Key properties include a boiling point of 311.3±52.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 142.0±30.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
344591-91-9
Jingsj CID
J-1394368-5
Molecular Formula
C5H6BF3N2O2
Molecular Weight
193.919 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point311.3±52.0 °C at 760 mmHg
Density1.5±0.1 g/cm3
Flash Point142.0±30.7 °C
Exact Mass194.047440
PSA58.28000
LogP0.51
Vapor Pressure0.0±0.7 mmHg at 25°C
Refractive Index1.463
Storage Conditions2-8°C

Customs & Trade Information

HS Code2933199090
Summary2933199090. 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 (1-Methyl-3-(trifluoromethyl)-1H-pyrazol-5-yl)boronic acid?

The CAS number of (1-Methyl-3-(trifluoromethyl)-1H-pyrazol-5-yl)boronic acid is 344591-91-9.

What are the molecular formula and molecular weight of (1-Methyl-3-(trifluoromethyl)-1H-pyrazol-5-yl)boronic acid?

(1-Methyl-3-(trifluoromethyl)-1H-pyrazol-5-yl)boronic acid has molecular formula C5H6BF3N2O2 and molecular weight 193.919 g/mol.

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

Last updated:

How to cite: Jingsj. "(1-Methyl-3-(trifluoromethyl)-1H-pyrazol-5-yl)boronic acid (CAS 344591-91-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1394368-5 (accessed 2026-11-09).

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