5-(thien-2-yl)thiophene-2-carbonitrile

Also known as: [2,2'-Bithiophene]-5-carbonitrile, 2,2'-bithiophene-5-carbonitrile, 5-cyano-2,2'-bithiophene, 5-thiophen-2-ylthiophene-2-carbonitrile, 2T-CN, AKOS BC-0620

5-(thien-2-yl)thiophene-2-carbonitrile (CAS 16278-99-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H5NS2 and a molecular weight of 191.27300 g/mol. Key properties include a melting point of 100ºC, a boiling point of 36ºC, a density of 1.36g/cm3 and a flash point of 148.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 16278-99-2
Jingsj CID: J-1359767-6
Molecular Formula: C₉H₅NS₂
Molecular Weight: 191.27300 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	100ºC
Boiling Point	36ºC
Density	1.36g/cm3
Flash Point	148.5ºC
Exact Mass	190.98600
PSA	80.27000
LogP	3.34828
Vapor Pressure	0.00029mmHg at 25°C
Refractive Index	1.667

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 5-(thien-2-yl)thiophene-2-carbonitrile?

The CAS number of 5-(thien-2-yl)thiophene-2-carbonitrile is 16278-99-2.

What are the molecular formula and molecular weight of 5-(thien-2-yl)thiophene-2-carbonitrile?

5-(thien-2-yl)thiophene-2-carbonitrile has molecular formula C9H5NS2 and molecular weight 191.27300 g/mol.

What are the upstream and downstream products of 5-(thien-2-yl)thiophene-2-carbonitrile?

For 5-(thien-2-yl)thiophene-2-carbonitrile, Upstream Products: 5-Bromothiophene-2-carbaldehyde, 2,2'-Bithiophene, [2,2′-Bithiophene]-5-carbaldehyde.

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. "5-(thien-2-yl)thiophene-2-carbonitrile (CAS 16278-99-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1359767-6 (accessed 2026-11-09).

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