2-methylpropyl 3-(methylthio)butanoate

3-(甲基硫代)丁酸-2-甲基丙酯

Also known as: isobutyl 3-methylthiobutyrate, isobutyl 3-methylsulfanylbutanoate, butanoic acid, 3-(methylthio)-, 2-methylpropyl ester, FEMA 4150, UNII-3JQI3X5245, 2-methylpropyl 3-methylsulfanylbutanoate, isobutyl-3-(methylthio)butyrate

2-methylpropyl 3-(methylthio)butanoate (CAS 127931-21-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H18O2S and a molecular weight of 190.30300 g/mol. It is also known as isobutyl 3-methylthiobutyrate, isobutyl 3-methylsulfanylbutanoate and butanoic acid, 3-(methylthio)-, 2-methylpropyl ester. Key properties include a boiling point of 246.9ºC at 760 mmHg, a density of 0.974g/cm3 and a flash point of 100ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
127931-21-9
Jingsj CID
J-1396826-5
Molecular Formula
C9H18O2S
Chinese Name
3-(甲基硫代)丁酸-2-甲基丙酯
Molecular Weight
190.30300 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point246.9ºC at 760 mmHg
Density0.974g/cm3
Flash Point100ºC

Frequently Asked Questions

What is the CAS number of 2-methylpropyl 3-(methylthio)butanoate?

The CAS number of 2-methylpropyl 3-(methylthio)butanoate is 127931-21-9.

What are the molecular formula and molecular weight of 2-methylpropyl 3-(methylthio)butanoate?

2-methylpropyl 3-(methylthio)butanoate has molecular formula C9H18O2S and molecular weight 190.30300 g/mol.

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

Last updated:

How to cite: Jingsj. "2-methylpropyl 3-(methylthio)butanoate (CAS 127931-21-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1396826-5 (accessed 2026-10-25).

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