(2S)-4-oxoazetidine-2-carboxylic acid
Also known as: (S)-(-)-4-oxo-2-azetidinecarboxylic acid, (S)-4-oxoazetidine-2-carboxylic acid, L-Pyroaspartic acid, (2S)-4-oxoazetidine-2-carboxylic acid, (S)-4-carboxy-2-azetidinone, 2-Azetidinecarboxylic acid, 4-oxo-, (2S)-
(2S)-4-oxoazetidine-2-carboxylic acid (CAS 16404-94-7) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H5NO3 and a molecular weight of 115.087 g/mol. Key properties include a melting point of 99-102ºC(lit.), a boiling point of 489.4±38.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 249.8±26.8 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 16404-94-7
- Jingsj CID
- J-25163-8
- Molecular Formula
- C4H5NO3
- Molecular Weight
- 115.087 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 99-102ºC(lit.) |
|---|---|
| Boiling Point | 489.4±38.0 °C at 760 mmHg |
| Density | 1.5±0.1 g/cm3 |
| Flash Point | 249.8±26.8 °C |
| Exact Mass | 115.026939 |
| PSA | 66.40000 |
| LogP | -2.48 |
| Vapor Pressure | 0.0±2.7 mmHg at 25°C |
| Refractive Index | 1.531 |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H319 — Causes serious eye irritation
Customs & Trade Information
| HS Code | 2933790090 |
|---|---|
| Summary | 2933790090. other lactams. VAT:17.0%. Tax rebate rate:9.0%. . MFN tariff:9.0%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of (2S)-4-oxoazetidine-2-carboxylic acid?
The CAS number of (2S)-4-oxoazetidine-2-carboxylic acid is 16404-94-7.
What are the molecular formula and molecular weight of (2S)-4-oxoazetidine-2-carboxylic acid?
(2S)-4-oxoazetidine-2-carboxylic acid has molecular formula C4H5NO3 and molecular weight 115.087 g/mol.
Is (2S)-4-oxoazetidine-2-carboxylic acid hazardous?
(2S)-4-oxoazetidine-2-carboxylic acid has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H319 — Causes serious eye irritation.
What are the upstream and downstream products of (2S)-4-oxoazetidine-2-carboxylic acid?
For (2S)-4-oxoazetidine-2-carboxylic acid, Upstream Products: Benzyl (S)-(-)-4-oxo-2-azetidinecarboxylate, Dibenzyl L-aspartate; Downstream Products: 4-Acetoxy-2-azetidinone, Azetirelin.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "(2S)-4-oxoazetidine-2-carboxylic acid (CAS 16404-94-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-25163-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.