2,2':5',2''-Terthiophene

Also known as: alpha-Terthiophene, alpha-Terthienyl, 2,5-Di(2-thienyl)thiophene, 2,2':5',2''-Terthienyl, Terthiophene, MFCD00012167

2,2':5',2''-Terthiophene (CAS 1081-34-1) 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 248.387 g/mol. Key properties include a melting point of 93-95 °C(lit.), a boiling point of 361.3±32.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 128.4±11.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1081-34-1
Jingsj CID: J-13644-7
Molecular Formula: C₁₂H₈S₃
Molecular Weight: 248.387 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	93-95 °C(lit.)
Boiling Point	361.3±32.0 °C at 760 mmHg
Density	1.3±0.1 g/cm3
Flash Point	128.4±11.3 °C
Exact Mass	247.978806
PSA	84.72000
LogP	5.56
Vapor Pressure	0.0±0.8 mmHg at 25°C
Refractive Index	1.672

Activity & Biological Data

Additional Information	[1]. Casado J, et al. Alternated quinoid/aromatic units in terthiophenes building blocks for electroactive narrow band gap polymers. Extended spectroscopic, solid state, electrochemical, and theoretical study. J Phys Chem B. 2005 Sep 8;109(35):16616-27.

Customs & Trade Information

HS Code	2934999090
Summary	2934999090. other heterocyclic compounds. 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 2,2':5',2''-Terthiophene?

The CAS number of 2,2':5',2''-Terthiophene is 1081-34-1.

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

2,2':5',2''-Terthiophene has molecular formula C12H8S3 and molecular weight 248.387 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. "2,2':5',2''-Terthiophene (CAS 1081-34-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-13644-7 (accessed 2026-11-09).

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