2-Methyl-2-(2-thienyl)-1,3-dioxolane

2-乙酰基噻吩乙二醇缩醛

Also known as: 2-acetylthiophene ethylene acetal, 2-methyl-2-thiophen-2-yl-1,3-dioxolane, 1,3-Dioxolane, 2-methyl-2-(2-thienyl)-, 2-acetylthiophene ketal

2-Methyl-2-(2-thienyl)-1,3-dioxolane (CAS 5916-12-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H10O2S and a molecular weight of 170.22900 g/mol. It is also known as 2-acetylthiophene ethylene acetal, 2-methyl-2-thiophen-2-yl-1,3-dioxolane and 1,3-Dioxolane, 2-methyl-2-(2-thienyl)-. Key properties include a melting point of 30-33ºC, a boiling point of 243.7±30.0 °C at 760 mmHg, a density of 1.191g/cm3 and a flash point of 101.2±24.6 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
5916-12-1
Jingsj CID
J-977721-3
Molecular Formula
C8H10O2S
Chinese Name
2-乙酰基噻吩乙二醇缩醛
Molecular Weight
170.22900 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point30-33ºC
Boiling Point243.7±30.0 °C at 760 mmHg
Density1.191g/cm3
Flash Point101.2±24.6 °C

Frequently Asked Questions

What is the CAS number of 2-Methyl-2-(2-thienyl)-1,3-dioxolane?

The CAS number of 2-Methyl-2-(2-thienyl)-1,3-dioxolane is 5916-12-1.

What are the molecular formula and molecular weight of 2-Methyl-2-(2-thienyl)-1,3-dioxolane?

2-Methyl-2-(2-thienyl)-1,3-dioxolane has molecular formula C8H10O2S and molecular weight 170.22900 g/mol.

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

Last updated:

How to cite: Jingsj. "2-Methyl-2-(2-thienyl)-1,3-dioxolane (CAS 5916-12-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-977721-3 (accessed 2026-10-22).

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