Methyl L-pyroglutamate (CAS 4931-66-2) is supplied by Monuo Chemical for peptide chemistry and laboratory purchasing. It is also referenced as 2-PYRROLIDONE-5-CARBOXYLIC ACID METHYL ESTER, METHYL L-PYROGLUTAMATE, METHYL (S)-2-PYRROLIDINONE-5-CARBOXYLATE. Buyers typically search by product name or CAS when sourcing protected amino acids and related derivatives.
Key Specifications at a Glance
| Product Name | Methyl L-pyroglutamate |
|---|---|
| CAS Number | 4931-66-2 |
| Molecular Formula | C6H9NO3 |
| Molecular Weight | 143.14 g/mol |
| Purity | >=98.0% (HPLC) |
| Appearance | Light yellow liquid |
| Category | Amino acids |
| Documents | COA, TDS, SDS on request |
| Supply Origin | China | Worldwide shipping |
What Is Methyl L-pyroglutamate?
Methyl L-pyroglutamate (CAS 4931-66-2) is supplied by Monuo Chemical as a protected amino acid / amino acid derivative for synthesis purchasing.
Molecular formula C6H9NO3; molecular weight about 143.14 g/mol. Always match CAS 4931-66-2 on the batch COA.
Finished-product claims and end-use regulatory decisions remain the customer’s responsibility. Monuo Chemical provides batch COA / SDS support for purchasing and laboratory use.
Synonyms & Search Names
- Methyl L-pyroglutamate
- 2-PYRROLIDONE-5-CARBOXYLIC ACID METHYL ESTER
- METHYL L-PYROGLUTAMATE
- METHYL (S)-2-PYRROLIDINONE-5-CARBOXYLATE
- METHYL (S)-(+)-2-PYRROLIDONE-5-CARBOXYLATE
- L-PYR-OME
- (+)-L-PYROGLUTAMIC ACID METHYL ESTER
- L-PYROGLUTAMIC ACID METHYL ESTER
- H-PGLU-OME
- CAS 4931-66-2
Applications
In peptide synthesis workflows, Methyl L-pyroglutamate is commonly used for:
- Amino acid / derivative building blocks for synthesis
- Peptide chemistry and pharmaceutical intermediate research supply
- Laboratory catalog and custom order support
- Process development requiring defined CAS identity
Handling & Use Notes
- Solvent: Confirm solubility of Methyl L-pyroglutamate in the intended process solvent before scale-up.
- Storage handling: Keep sealed and dry during weighing; avoid unnecessary heat/light exposure.
- Identity: Verify CAS and purity on the batch COA.
- Safety: Follow the SDS for handling and disposal.
Need packing or assay discussion for your project? Email info@monuochem.com.
Packaging, Storage & Logistics
| Standard Pack Sizes | 1 g / 5 g / 10 g / 25 g / 100 g bottles; 500 g / 1 kg packs (custom packing available) |
|---|---|
| Storage | Keep sealed, dry and protected from light and heat. Follow the batch COA and SDS. |
| Shelf Life | Confirm shelf life on the COA for each lot. |
| MOQ | Commercial MOQ discussed per project (often from 10 g); smaller trial packs available on request |
| Lead Time | Stock items often ship promptly; custom pack / large lots typically 7–14 working days |
Quality & Documentation
For Methyl L-pyroglutamate (CAS 4931-66-2), Monuo Chemical can provide:
- Certificate of Analysis (COA)
- Technical Data Sheet (TDS) and Safety Data Sheet (SDS)
- CAS / product-name confirmation for your purchase file
- Flexible packing from grams to kilograms
- FOB / CIF / DAP terms as agreed
Our team aims to return technical data and quotations within 24 hours.
Request a Quote
Share your target purity, pack size and destination. We will confirm availability and documentation for Methyl L-pyroglutamate CAS 4931-66-2.
Request a Quote | Email: info@monuochem.com
Frequently Asked Questions
What is Methyl L-pyroglutamate (CAS 4931-66-2)?
Methyl L-pyroglutamate is supplied by Monuo Chemical as a catalog raw material for synthesis and laboratory use. Match CAS 4931-66-2 on the batch COA.
What is the molecular formula and weight of Methyl L-pyroglutamate?
Molecular formula C6H9NO3; molecular weight about 143.14 g/mol.
Is Methyl L-pyroglutamate known by other names?
Yes. Common synonyms include: 2-PYRROLIDONE-5-CARBOXYLIC ACID METHYL ESTER, METHYL L-PYROGLUTAMATE, METHYL (S)-2-PYRROLIDINONE-5-CARBOXYLATE, METHYL (S)-(+)-2-PYRROLIDONE-5-CARBOXYLATE. Specify the product name and CAS 4931-66-2, then confirm against the COA.
What purity of Methyl L-pyroglutamate do you supply?
Typical supply purity is >=98.0% (HPLC). Exact assay is stated on the Certificate of Analysis for each lot.
Where is Methyl L-pyroglutamate typically used?
Methyl L-pyroglutamate is commonly used in: Amino acid / derivative building blocks for synthesis; Peptide chemistry and pharmaceutical intermediate research supply; Laboratory catalog and custom order support.
What documents can Monuo Chemical provide?
COA, TDS and SDS are standard. Additional purchase-file letters can be discussed per project.
What is the MOQ for Methyl L-pyroglutamate?
Commercial MOQ is commonly discussed from 10 g upward, with flexible packs up to kilograms. Smaller trial packs can be arranged based on project needs.
Do you ship worldwide?
Yes. Monuo Chemical ships worldwide under agreed Incoterms. Lead time depends on stock and packaging.
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Disclaimer: Information is for raw-material identification and technical reference in chemical purchasing and laboratory use. Verify each lot against the supplied COA and SDS.
