(R)-1-tert-Butyl 2-methyl 5-oxopyrrolidine-1,2-dicarboxylate

N-BOC-D-焦谷氨酸甲酯

Also known as: Boc-D-pyroglutamic acid methyl ester, (R)-N-BOC-5-METHOXYCARBONYL-2-PYRROLIDINONE, Methyl (R)-N-(tert-butoxycarbonyl)pyroglutamate, 1-Boc-5-oxo-D-proline methyl ester, (R)-N-(tert-butoxycarbonyl)pyroglutamate, 1-tert-Butyl 2-methyl (2R)-5-oxopyrrolidine-1,2-dicarboxylate

(R)-1-tert-Butyl 2-methyl 5-oxopyrrolidine-1,2-dicarboxylate (CAS 128811-48-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C11H17NO5 and a molecular weight of 243.256 g/mol. It is also known as Boc-D-pyroglutamic acid methyl ester, (R)-N-BOC-5-METHOXYCARBONYL-2-PYRROLIDINONE and Methyl (R)-N-(tert-butoxycarbonyl)pyroglutamate. Key properties include a melting point of 68-69ºC, a boiling point of 361.6±35.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 172.5±25.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 128811-48-3
Jingsj CID: J-1015970-3
Molecular Formula: C₁₁H₁₇NO₅
Chinese Name: N-BOC-D-焦谷氨酸甲酯
Molecular Weight: 243.256 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	68-69ºC
Boiling Point	361.6±35.0 °C at 760 mmHg
Density	1.2±0.1 g/cm3
Flash Point	172.5±25.9 °C

Frequently Asked Questions

What is the CAS number of (R)-1-tert-Butyl 2-methyl 5-oxopyrrolidine-1,2-dicarboxylate?

The CAS number of (R)-1-tert-Butyl 2-methyl 5-oxopyrrolidine-1,2-dicarboxylate is 128811-48-3.

What are the molecular formula and molecular weight of (R)-1-tert-Butyl 2-methyl 5-oxopyrrolidine-1,2-dicarboxylate?

(R)-1-tert-Butyl 2-methyl 5-oxopyrrolidine-1,2-dicarboxylate has molecular formula C11H17NO5 and molecular weight 243.256 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "(R)-1-tert-Butyl 2-methyl 5-oxopyrrolidine-1,2-dicarboxylate (CAS 128811-48-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1015970-3 (accessed 2026-10-23).

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