Pyr-OMe

CAS Number: 4931-66-2
Category: Amino Acid Esters
Synonyms: Methyl (2S)-5-oxopyrrolidine-2-carboxylate / methyl (S)-(+)-2-pyrrolidone-5-carboxylate / L-pyroglutamic acid methyl ester
✓ GMP-compliant ✓ Commercial supply&ample stock ✓ Various Packaging Available ✓ Factory documentation support

Product Specifications

CAS Number4931-66-2
Molecular FormulaC₆H₉NO₃
Molecular Weight143.14
Purity98%
AppearanceColorless to yellowish liquid
Storage ConditionsRoom Temperature
Package100G,1KG, 25KG

Product Overview

H-Pyr-OMe; Methyl L-pyroglutamate CAS: 4931-66-2

Applications

A chiral amino acid ester derivative used as a key building block in organic synthesis and peptide chemistry. Serves as a versatile starting material for constructing natural products, peptidomimetics, and bioactive active pharmaceutical ingredients (APIs). The methyl ester group acts as a protected carboxylate that can undergo selective nucleophilic substitutions or mild hydrolysis during liquid-phase or fragment-based synthesis.

Quality Assurance

Can be tested according to the customer’s method of analysis.

Certificate of Analysis (COA) and Material Safety Data Sheets (MSDS) provided upon request.