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3-Methyl-2,5-dihydrothiophene 1,1-dioxide

3-甲基-2,5-二氢噻吩-1,1-二氧化物

Also known as: Thiophene, 2,5-dihydro-3-methyl-, 1,1-dioxide, 3-Methylsulfolene, 3-Methyl-3-sulfolene, 3-Methyl-2,5-dihydrothiophene dioxide, 2,5-Dihydro-3-methyl-thiophene 1,1-dioxide, Isoprene sulfone, Isoprene cyclic sulfone, 3-methyl-3-thiolene 1,1-dioxide, MFCD00005482, EINECS 214-765-5, AKOS BBS-00004852

3-Methyl-2,5-dihydrothiophene 1,1-dioxide (CAS 1193-10-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H8O2S and a molecular weight of 132.18100 g/mol. It is also known as Thiophene, 2,5-dihydro-3-methyl-, 1,1-dioxide, 3-Methylsulfolene and 3-Methyl-3-sulfolene. Key properties include a melting point of 62-64ºC, a boiling point of 292.4ºC at 760 mmHg, a density of 1.24g/cm3 and a flash point of 171.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1193-10-8
Jingsj CID
J-47337-4
Molecular Formula
C5H8O2S
Chinese Name
3-甲基-2,5-二氢噻吩-1,1-二氧化物
Molecular Weight
132.18100 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point62-64ºC
Boiling Point292.4ºC at 760 mmHg
Density1.24g/cm3
Flash Point171.9ºC

Frequently Asked Questions

What is the CAS number of 3-Methyl-2,5-dihydrothiophene 1,1-dioxide?

The CAS number of 3-Methyl-2,5-dihydrothiophene 1,1-dioxide is 1193-10-8.

What are the molecular formula and molecular weight of 3-Methyl-2,5-dihydrothiophene 1,1-dioxide?

3-Methyl-2,5-dihydrothiophene 1,1-dioxide has molecular formula C5H8O2S and molecular weight 132.18100 g/mol.

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

Last updated:

How to cite: Jingsj. "3-Methyl-2,5-dihydrothiophene 1,1-dioxide (CAS 1193-10-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-47337-4 (accessed 2026-10-23).

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