4-bromo-3,5-dimethyl-1-phenyl-1H-pyrazole

Also known as: 4-bromo-3,5-dimethyl-1-phenylpyrazole, 1H-Pyrazole, 4-bromo-3,5-dimethyl-1-phenyl-, 1-phenyl-4-bromo-3,5-dimethyl-1H-pyrazole, 4-Brom-3,5-dimethyl-1-phenyl-1H-pyrazol, 4-Brom-3,5-dimethyl-1-phenylpyrazol

4-bromo-3,5-dimethyl-1-phenyl-1H-pyrazole (CAS 51294-75-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H11BrN2 and a molecular weight of 251.12200 g/mol. Key properties include a boiling point of 325.8ºC at 760 mmHg, a density of 1.4g/cm3 and a flash point of 150.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 51294-75-8
Jingsj CID: J-1171638-4
Molecular Formula: C₁₁H₁₁BrN₂
Molecular Weight: 251.12200 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	325.8ºC at 760 mmHg
Density	1.4g/cm3
Flash Point	150.9ºC
Exact Mass	250.01100
PSA	17.82000
LogP	3.25160
Refractive Index	1.613

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-bromo-3,5-dimethyl-1-phenyl-1H-pyrazole?

The CAS number of 4-bromo-3,5-dimethyl-1-phenyl-1H-pyrazole is 51294-75-8.

What are the molecular formula and molecular weight of 4-bromo-3,5-dimethyl-1-phenyl-1H-pyrazole?

4-bromo-3,5-dimethyl-1-phenyl-1H-pyrazole has molecular formula C11H11BrN2 and molecular weight 251.12200 g/mol.

What are the upstream and downstream products of 4-bromo-3,5-dimethyl-1-phenyl-1H-pyrazole?

For 4-bromo-3,5-dimethyl-1-phenyl-1H-pyrazole, Upstream Products: 3,5-Dimethyl-1-phenyl-1H-pyrazole, 3,5-Dimethyl-1-phenyl-1H-pyrazole-4-carbaldehyde, 2,4-Pentanedione.

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-bromo-3,5-dimethyl-1-phenyl-1H-pyrazole (CAS 51294-75-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1171638-4 (accessed 2026-11-09).

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