2-p-Tolylthiophene

2-对甲苯基噻吩

Also known as: 2-p-Tolylthiophene, 2-p-Tolyl-thiophene(7CI,8CI), 4-(Thien-2-yl)toluene, 1-Methyl-4-(thien-2-yl)benzene, 4-methylphenyl-2-thiophene, Thiophene, 2-(4-methylphenyl)-

2-p-Tolylthiophene (CAS 16939-04-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H10OS and a molecular weight of 190.26100 g/mol. It is also known as 2-p-Tolyl-thiophene(7CI,8CI), 4-(Thien-2-yl)toluene and 1-Methyl-4-(thien-2-yl)benzene. Key properties include a boiling point of 338.5ºCat 760 mmHg, a density of 1.204 g/cm3 and a flash point of 158.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 16939-04-1
Jingsj CID: J-1965831-3
Molecular Formula: C₁₁H₁₀OS
Chinese Name: 2-对甲苯基噻吩
Molecular Weight: 190.26100 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	338.5ºCat 760 mmHg
Density	1.204 g/cm3
Flash Point	158.5ºC
Exact Mass	190.04500
PSA	48.47000
LogP	2.90740
Vapor Pressure	3.8E-05mmHg at 25°C
Refractive Index	1.622

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-p-Tolylthiophene?

The CAS number of 2-p-Tolylthiophene is 16939-04-1.

What are the molecular formula and molecular weight of 2-p-Tolylthiophene?

2-p-Tolylthiophene has molecular formula C11H10OS and molecular weight 190.26100 g/mol.

What are the upstream and downstream products of 2-p-Tolylthiophene?

For 2-p-Tolylthiophene, Upstream Products: 2-Chlorothiophene, 4-Tolylboronic acid, 2-Iodothiophene.

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

Last updated: 8/21/2026

How to cite: Jingsj. "2-p-Tolylthiophene (CAS 16939-04-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1965831-3 (accessed 2026-10-28).

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