2-(thiophen-2-ylsulfanyl)thiophene

Also known as: 2,2'-Sulfanediyldithiophene, 2-(2-Thienylthio)thiophene, 2-(2-Thienylsulfanyl)thiophene, 2-thiophen-2-ylsulfanylthiophene, Di(thiophen-2-yl)sulfane, Di-2-thienyl sulfide, Dithienyl sulphide, Thiophene, 2,2'-thiobis-, bis(2-thienyl) sulfide, bis(thien-2-yl)sulfide, bis(thiophen-2-yl)sulfane, di(2-thienyl) sulfide, dithiophen-2-ylsulfide

2-(thiophen-2-ylsulfanyl)thiophene (CAS 3988-99-6) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H6S3 and a molecular weight of 198.328 g/mol. Key properties include a boiling point of 315.0±17.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 144.3±20.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 3988-99-6
Jingsj CID: J-1966032-3
Molecular Formula: C₈H₆S₃
Molecular Weight: 198.328 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	315.0±17.0 °C at 760 mmHg
Density	1.4±0.1 g/cm3
Flash Point	144.3±20.9 °C
Exact Mass	197.963165
PSA	81.78000
LogP	4.41
Vapor Pressure	0.0±0.6 mmHg at 25°C
Refractive Index	1.698

Frequently Asked Questions

What is the CAS number of 2-(thiophen-2-ylsulfanyl)thiophene?

The CAS number of 2-(thiophen-2-ylsulfanyl)thiophene is 3988-99-6.

What are the molecular formula and molecular weight of 2-(thiophen-2-ylsulfanyl)thiophene?

2-(thiophen-2-ylsulfanyl)thiophene has molecular formula C8H6S3 and molecular weight 198.328 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-(thiophen-2-ylsulfanyl)thiophene (CAS 3988-99-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1966032-3 (accessed 2026-11-09).

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