Methyl (S)-2-isocyanato-3-phenylpropionate

(S)-2-异氰酰基-3-苯基丙酸甲酯

Also known as: Methyl (S)-(-)-2-isocyanato-3-phenylpropionate, Methyl (2S)-2-isocyanato-3-phenylpropanoate, Methyl 2(S)-isocyanato-3-phenylpropanoate, Methyl N-(oxomethylene)phenylalaninate, L-Phenylalanine methyl ester isocyanate, N-Carbonyl-L-phenylalanine methyl ester, (S)-2-Isocyanato-3-phenylpropionic acid methyl ester, MFCD00191535

Methyl (S)-2-isocyanato-3-phenylpropionate (CAS 40203-94-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C11H11NO3 and a molecular weight of 205.21000 g/mol. It is also known as Methyl (S)-(-)-2-isocyanato-3-phenylpropionate, Methyl (2S)-2-isocyanato-3-phenylpropanoate and Methyl 2(S)-isocyanato-3-phenylpropanoate. Key properties include a melting point of 23°C, a boiling point of 244 °C(lit.), a density of 1.13 g/mL at 25 °C(lit.) and a flash point of >230 °F. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
40203-94-9
Jingsj CID
J-8524-9
Molecular Formula
C11H11NO3
Chinese Name
(S)-2-异氰酰基-3-苯基丙酸甲酯
Molecular Weight
205.21000 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point23°C
Boiling Point244 °C(lit.)
Density1.13 g/mL at 25 °C(lit.)
Flash Point>230 °F

GHS Safety & Compliance

Flammable / IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of Methyl (S)-2-isocyanato-3-phenylpropionate?

The CAS number of Methyl (S)-2-isocyanato-3-phenylpropionate is 40203-94-9.

What are the molecular formula and molecular weight of Methyl (S)-2-isocyanato-3-phenylpropionate?

Methyl (S)-2-isocyanato-3-phenylpropionate has molecular formula C11H11NO3 and molecular weight 205.21000 g/mol.

Is Methyl (S)-2-isocyanato-3-phenylpropionate hazardous?

Methyl (S)-2-isocyanato-3-phenylpropionate has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "Methyl (S)-2-isocyanato-3-phenylpropionate (CAS 40203-94-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-8524-9 (accessed 2026-10-23).

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