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Ethyl D-(-)-pyroglutamate

Also known as: Ethyl (R)-(-)-2-pyrrolidone-5-carboxylate, D-Pyroglutamic acid ethyl ester, Ethyl D-pyroglutamate, Ethyl 5-oxo-D-proline, (R)-5-Oxoproline ethyl ester, D-5-Oxo-2-pyrrolidinecarboxylic acid ethyl ester, H-D-Pyr-OEt, H-D-Pglu-OEt, (R)-(-)-Ethyl-2-pyrrollidone-5-carboxylate, 5-Oxo-D-proline ethyl ester, (R)-(-)-2-pyrrolidinone-5-carboxylate ethyl ester, ethyl (2R)-5-oxopyrrolidine-2-carboxylate

Ethyl D-(-)-pyroglutamate (CAS 68766-96-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H11NO3 and a molecular weight of 157.167 g/mol. Key properties include a melting point of 49-53ºC, a boiling point of 312.7±35.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 142.9±25.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
68766-96-1
Jingsj CID
J-25561-8
Molecular Formula
C7H11NO3
Molecular Weight
157.167 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point49-53ºC
Boiling Point312.7±35.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point142.9±25.9 °C
Exact Mass157.073898
PSA55.40000
LogP-1.39
Vapor Pressure0.0±0.7 mmHg at 25°C
Refractive Index1.466
Storage Conditions2~8°C

Frequently Asked Questions

What is the CAS number of Ethyl D-(-)-pyroglutamate?

The CAS number of Ethyl D-(-)-pyroglutamate is 68766-96-1.

What are the molecular formula and molecular weight of Ethyl D-(-)-pyroglutamate?

Ethyl D-(-)-pyroglutamate has molecular formula C7H11NO3 and molecular weight 157.167 g/mol.

What are the upstream and downstream products of Ethyl D-(-)-pyroglutamate?

For Ethyl D-(-)-pyroglutamate, Upstream Products: Ethanol, D-Pyroglutamic acid, D(-)-Glutamic acid; Downstream Products: Ethanol, D-Pyroglutamic acid, (R)-(-)-5-(Hydroxymethyl)-2-pyrrolidinone.

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

Last updated:

How to cite: Jingsj. "Ethyl D-(-)-pyroglutamate (CAS 68766-96-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-25561-8 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.