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5-[4-phenyl-5-(trifluoromethyl)-2-thienyl]-3-[3-(trifluoromethyl)phenyl]-1,2,4-oxadiazole

5-[4-苯基-5-(三氟甲基)-2-噻吩基]-3-[3-(三氟甲基)苯基]-1,2,4-恶二唑

Also known as: SEW 2871, SEW-2871, 5-[4-Phenyl-5-(trifluoromethyl)-2-thienyl]-3-[3-(trifluoromethyl)phenyl]-1,2,4-oxadiazole, 5-(4-Phenyl-5-(trifluoromethyl)thiophen-2-yl)-3-(3-(trifluoromethyl)phenyl)-1,2,4-oxadiazole

5-[4-phenyl-5-(trifluoromethyl)-2-thienyl]-3-[3-(trifluoromethyl)phenyl]-1,2,4-oxadiazole (CAS 256414-75-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C20H10F6N2OS and a molecular weight of 440.362 g/mol. It is also known as SEW 2871, SEW-2871 and 5-[4-Phenyl-5-(trifluoromethyl)-2-thienyl]-3-[3-(trifluoromethyl)phenyl]-1,2,4-oxadiazole. Key properties include a melting point of 94.5-95.3ºC, a boiling point of 490.3±55.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 250.3±31.5 °C. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
256414-75-2
Jingsj CID
J-1958967-5
Molecular Formula
C20H10F6N2OS
Chinese Name
5-[4-苯基-5-(三氟甲基)-2-噻吩基]-3-[3-(三氟甲基)苯基]-1,2,4-恶二唑
Molecular Weight
440.362 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point94.5-95.3ºC
Boiling Point490.3±55.0 °C at 760 mmHg
Density1.4±0.1 g/cm3
Flash Point250.3±31.5 °C

GHS Safety & Compliance

Acute ToxicitySignal word: Danger

Frequently Asked Questions

What is the CAS number of 5-[4-phenyl-5-(trifluoromethyl)-2-thienyl]-3-[3-(trifluoromethyl)phenyl]-1,2,4-oxadiazole?

The CAS number of 5-[4-phenyl-5-(trifluoromethyl)-2-thienyl]-3-[3-(trifluoromethyl)phenyl]-1,2,4-oxadiazole is 256414-75-2.

What are the molecular formula and molecular weight of 5-[4-phenyl-5-(trifluoromethyl)-2-thienyl]-3-[3-(trifluoromethyl)phenyl]-1,2,4-oxadiazole?

5-[4-phenyl-5-(trifluoromethyl)-2-thienyl]-3-[3-(trifluoromethyl)phenyl]-1,2,4-oxadiazole has molecular formula C20H10F6N2OS and molecular weight 440.362 g/mol.

Is 5-[4-phenyl-5-(trifluoromethyl)-2-thienyl]-3-[3-(trifluoromethyl)phenyl]-1,2,4-oxadiazole hazardous?

5-[4-phenyl-5-(trifluoromethyl)-2-thienyl]-3-[3-(trifluoromethyl)phenyl]-1,2,4-oxadiazole has GHS signal word Danger.

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

Last updated:

How to cite: Jingsj. "5-[4-phenyl-5-(trifluoromethyl)-2-thienyl]-3-[3-(trifluoromethyl)phenyl]-1,2,4-oxadiazole (CAS 256414-75-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1958967-5 (accessed 2026-10-25).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.