1,3,4-Triphenyl-1H-pyrazole

Also known as: 1,3,4-triphenylpyrazole, 1H-Pyrazole, 1,3,4-triphenyl-, Pyrazole, 1,3,4-triphenyl-

1,3,4-Triphenyl-1H-pyrazole (CAS 1666-85-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C21H16N2 and a molecular weight of 296.36500 g/mol. Key properties include a boiling point of 443ºC at 760 mmHg, a density of 1.08g/cm3 and a flash point of 221.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1666-85-9
Jingsj CID: J-1448489-0
Molecular Formula: C₂₁H₁₆N₂
Molecular Weight: 296.36500 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	443ºC at 760 mmHg
Density	1.08g/cm3
Flash Point	221.7ºC
Exact Mass	296.13100
PSA	17.82000
LogP	5.20630
Vapor Pressure	1.25E-07mmHg at 25°C
Refractive Index	1.624

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 1,3,4-Triphenyl-1H-pyrazole?

The CAS number of 1,3,4-Triphenyl-1H-pyrazole is 1666-85-9.

What are the molecular formula and molecular weight of 1,3,4-Triphenyl-1H-pyrazole?

1,3,4-Triphenyl-1H-pyrazole has molecular formula C21H16N2 and molecular weight 296.36500 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. "1,3,4-Triphenyl-1H-pyrazole (CAS 1666-85-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1448489-0 (accessed 2026-11-09).

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