Di-tert-butyl (2S)-5-oxopyrrolidine-1,2-dicarboxylate
Also known as: (S)-N-Boc-2-pyrrolidone-5-carboxylic acid tert-butyl ester, (S)-N-Boc-pyroglutamic acid tert-butyl ester, (S)-di-tert-butyl 5-oxopyrrolidine-1,2-dicarboxylate, Boc-pyroglutamic acid tert-butyl ester, Boc-Pyr-OTBu, N-Boc-L-pyroglutamic acid tert-butyl ester, tert-butyl (S)-N-(tert-butoxycarbonyl)pyroglutamate, (S)-N-alpha-t-butyloxycarbonyl-pyroglutamic acid t-butyl ester, (2S)-di-tert-butyl 5-oxopyrrolidine-1,2-dicarboxylate, 1,2-di-tert-butyl (2S)-5-oxopyrrolidine-1,2-dicarboxylate, ditert-butyl (2S)-5-oxopyrrolidine-1,2-dicarboxylate
Di-tert-butyl (2S)-5-oxopyrrolidine-1,2-dicarboxylate (CAS 91229-91-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C14H23NO5 and a molecular weight of 285.336 g/mol. Key properties include a melting point of 58 °C, a boiling point of 390.7±35.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 190.1±25.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 91229-91-3
- Jingsj CID
- J-1024757-1
- Molecular Formula
- C14H23NO5
- Molecular Weight
- 285.336 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 58 °C |
|---|---|
| Boiling Point | 390.7±35.0 °C at 760 mmHg |
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 190.1±25.9 °C |
| Exact Mass | 285.157623 |
| PSA | 72.91000 |
| LogP | 0.79 |
| Vapor Pressure | 0.0±0.9 mmHg at 25°C |
| Refractive Index | 1.485 |
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 Di-tert-butyl (2S)-5-oxopyrrolidine-1,2-dicarboxylate?
The CAS number of Di-tert-butyl (2S)-5-oxopyrrolidine-1,2-dicarboxylate is 91229-91-3.
What are the molecular formula and molecular weight of Di-tert-butyl (2S)-5-oxopyrrolidine-1,2-dicarboxylate?
Di-tert-butyl (2S)-5-oxopyrrolidine-1,2-dicarboxylate has molecular formula C14H23NO5 and molecular weight 285.336 g/mol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Di-tert-butyl (2S)-5-oxopyrrolidine-1,2-dicarboxylate (CAS 91229-91-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1024757-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.