(S)-(+)-3-Methyl-2-butyl isocyanate

(S)-(+)-3-甲基-2-丁基异氰酸酯

Also known as: (2S)-2-isocyanato-3-methylbutane, (S)-3-METHYL-2-BUTYL ISOCYANATE, Butane,2-isocyanato-3-methyl-,(2S), MFCD05664134

(S)-(+)-3-Methyl-2-butyl isocyanate (CAS 749261-38-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H11NO and a molecular weight of 113.15800 g/mol. It is also known as (2S)-2-isocyanato-3-methylbutane, (S)-3-METHYL-2-BUTYL ISOCYANATE and Butane,2-isocyanato-3-methyl-,(2S). Key properties include a boiling point of 123.9ºC at 760 mmHg, a density of 0.88g/cm3 and a flash point of 28.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
749261-38-9
Jingsj CID
J-43714-9
Molecular Formula
C6H11NO
Chinese Name
(S)-(+)-3-甲基-2-丁基异氰酸酯
Molecular Weight
113.15800 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point123.9ºC at 760 mmHg
Density0.88g/cm3
Flash Point28.3ºC

Frequently Asked Questions

What is the CAS number of (S)-(+)-3-Methyl-2-butyl isocyanate?

The CAS number of (S)-(+)-3-Methyl-2-butyl isocyanate is 749261-38-9.

What are the molecular formula and molecular weight of (S)-(+)-3-Methyl-2-butyl isocyanate?

(S)-(+)-3-Methyl-2-butyl isocyanate has molecular formula C6H11NO and molecular weight 113.15800 g/mol.

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

Last updated:

How to cite: Jingsj. "(S)-(+)-3-Methyl-2-butyl isocyanate (CAS 749261-38-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-43714-9 (accessed 2026-10-25).

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