3,2':5',3''-terthiophene

3,2′:5′,3″-三噻吩

Also known as: 2,5-di(thiophen-3-yl)thiophene, 2,2':5',3''-terthiophene, 2,5-bis(3-thienyl)thiophene, 3,2':5',3''-terthiophene

3,2':5',3''-terthiophene (CAS 81294-16-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C12H8S3 and a molecular weight of 248.38700 g/mol. It is also known as 2,5-di(thiophen-3-yl)thiophene, 2,2':5',3''-terthiophene and 2,5-bis(3-thienyl)thiophene. Key properties include a melting point of 175-181ºC(lit.), a boiling point of 315.6ºC at 760 mmHg, a density of 1.318g/cm3 and a flash point of 106.8ºC. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
81294-16-8
Jingsj CID
J-1086971-2
Molecular Formula
C12H8S3
Chinese Name
3,2′:5′,3″-三噻吩
Molecular Weight
248.38700 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point175-181ºC(lit.)
Boiling Point315.6ºC at 760 mmHg
Density1.318g/cm3
Flash Point106.8ºC

GHS Safety & Compliance

Acute ToxicitySignal word: Danger

Frequently Asked Questions

What is the CAS number of 3,2':5',3''-terthiophene?

The CAS number of 3,2':5',3''-terthiophene is 81294-16-8.

What are the molecular formula and molecular weight of 3,2':5',3''-terthiophene?

3,2':5',3''-terthiophene has molecular formula C12H8S3 and molecular weight 248.38700 g/mol.

Is 3,2':5',3''-terthiophene hazardous?

3,2':5',3''-terthiophene 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. "3,2':5',3''-terthiophene (CAS 81294-16-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1086971-2 (accessed 2026-10-24).

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