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. It is classified under GHS with signal word Warning and hazard statements H226 — Flammable liquid and vapour, H302 — Harmful if swallowed and H312 — Harmful in contact with skin. 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
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 23°C |
|---|---|
| Boiling Point | 244 °C(lit.) |
| Density | 1.13 g/mL at 25 °C(lit.) |
| Flash Point | >230 °F |
| Exact Mass | 205.07400 |
| PSA | 55.73000 |
| LogP | 1.10650 |
| Refractive Index | n20/D 1.513(lit.) |
GHS Safety & Compliance
- H226 — Flammable liquid and vapour
- H302 — Harmful if swallowed
- H312 — Harmful in contact with skin
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H332 — Harmful if inhaled
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2929109000 |
|---|---|
| Summary | 2929109000. other isocyanates. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0% |
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 and hazard statements H226 — Flammable liquid and vapour; H302 — Harmful if swallowed; H312 — Harmful in contact with skin.
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 2026-10-29).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.