Methyl L-2-isothiocyanato-3-methylbutyrate

L-2-异硫氰基-3-甲基丁酸甲酯

Also known as: (2S)-2-isothiocyanato-3-methylbutanoic acid methyl ester, Butanoic acid, 2-isothiocyanato-3-methyl-, methyl ester, methyl N-(thioxomethylene)valinate, methyl (2S)-2-isothiocyanato-3-methylbutanoate

Methyl L-2-isothiocyanato-3-methylbutyrate (CAS 21055-41-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H11NO2S and a molecular weight of 173.23300 g/mol. It is also known as (2S)-2-isothiocyanato-3-methylbutanoic acid methyl ester, Butanoic acid, 2-isothiocyanato-3-methyl-, methyl ester and methyl N-(thioxomethylene)valinate. Key properties include a boiling point of 230.2ºC at 760mmHg, a density of 1.08g/cm3 and a flash point of 93ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 21055-41-4
Jingsj CID: J-1518228-7
Molecular Formula: C₇H₁₁NO₂S
Chinese Name: L-2-异硫氰基-3-甲基丁酸甲酯
Molecular Weight: 173.23300 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	230.2ºC at 760mmHg
Density	1.08g/cm3
Flash Point	93ºC

Frequently Asked Questions

What is the CAS number of Methyl L-2-isothiocyanato-3-methylbutyrate?

The CAS number of Methyl L-2-isothiocyanato-3-methylbutyrate is 21055-41-4.

What are the molecular formula and molecular weight of Methyl L-2-isothiocyanato-3-methylbutyrate?

Methyl L-2-isothiocyanato-3-methylbutyrate has molecular formula C7H11NO2S and molecular weight 173.23300 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "Methyl L-2-isothiocyanato-3-methylbutyrate (CAS 21055-41-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1518228-7 (accessed 2026-10-25).

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