FMOC-L-Proline (CAS 71989-31-6) is supplied by Monuo Chemical for peptide chemistry and laboratory purchasing. It is also referenced as N-9-FLUORENYLMETHYLOXYCARBONYL-L-PROLINE, N-(9-FLUOROENYLMETHOXYCARBONYL)-L-SERINE, N-(9-FLUORENYLMETHOXYCARBONYL)-L-PROLINE. Buyers typically search by product name, Fmoc abbreviation or CAS when sourcing SPPS building blocks.
Key Specifications at a Glance
| Product Name | FMOC-L-Proline |
|---|---|
| CAS Number | 71989-31-6 |
| Molecular Formula | C20H19NO4 |
| Molecular Weight | 337.37 g/mol |
| Purity | >=98% (HPLC) |
| Category | Amino acids |
| Documents | COA, TDS, SDS on request |
| Supply Origin | China | Worldwide shipping |
What Is FMOC-L-Proline?
FMOC-L-Proline (CAS 71989-31-6) is an Fmoc-protected amino acid building block for solid-phase peptide synthesis (SPPS). Monuo Chemical supplies it for peptide chemistry labs, custom synthesis teams and catalog procurement.
Molecular formula C20H19NO4; molecular weight about 337.37 g/mol. Always match CAS 71989-31-6 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
- FMOC-L-Proline
- N-9-FLUORENYLMETHYLOXYCARBONYL-L-PROLINE
- N-(9-FLUOROENYLMETHOXYCARBONYL)-L-SERINE
- N-(9-FLUORENYLMETHOXYCARBONYL)-L-PROLINE
- N-(9-FLUORENYLMETHOXYCARBONYL)-L-PYRROLIDINE-2-CARBOXYLICACID
- N-ALPHA-FMOC-L-PROLINE
- 9-FLUORENYLMETHOXYCARBONYL-L-PROLINE
- FMOC-L-PRO-OH
- FMOC-L-PRO-OHH2O
- CAS 71989-31-6
Applications
In peptide synthesis workflows, FMOC-L-Proline is commonly used for:
- Fmoc solid-phase peptide synthesis (SPPS)
- Protected amino acid coupling cycles in peptide assembly
- Catalog building-block supply for peptide chemistry labs
- Custom peptide and process-development projects
Handling & Use Notes
- Solvent: Dissolve FMOC-L-Proline in a suitable SPPS solvent (commonly DMF or related systems) per your coupling protocol.
- Moisture: Protect from excessive moisture; reseal promptly after sampling.
- Identity: Match CAS number and assay data against the batch COA before use.
- Safety: Follow the SDS for storage, PPE and waste handling.
Need packing or assay discussion for your project? Email info@monuochem.com.
Packaging, Storage & Logistics
| Standard Pack Sizes | 50 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 FMOC-L-Proline (CAS 71989-31-6), 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 FMOC-L-Proline CAS 71989-31-6.
Request a Quote | Email: info@monuochem.com
Frequently Asked Questions
What is FMOC-L-Proline (CAS 71989-31-6)?
FMOC-L-Proline is supplied by Monuo Chemical as a catalog raw material for synthesis and laboratory use. Match CAS 71989-31-6 on the batch COA.
What is the molecular formula and weight of FMOC-L-Proline?
Molecular formula C20H19NO4; molecular weight about 337.37 g/mol.
Is FMOC-L-Proline known by other names?
Yes. Common synonyms include: N-9-FLUORENYLMETHYLOXYCARBONYL-L-PROLINE, N-(9-FLUOROENYLMETHOXYCARBONYL)-L-SERINE, N-(9-FLUORENYLMETHOXYCARBONYL)-L-PROLINE, N-(9-FLUORENYLMETHOXYCARBONYL)-L-PYRROLIDINE-2-CARBOXYLICACID. Specify the product name and CAS 71989-31-6, then confirm against the COA.
What purity of FMOC-L-Proline do you supply?
Typical supply purity is >=98% (HPLC). Exact assay is stated on the Certificate of Analysis for each lot.
Where is FMOC-L-Proline typically used?
FMOC-L-Proline is commonly used in: Fmoc solid-phase peptide synthesis (SPPS); Protected amino acid coupling cycles in peptide assembly; Catalog building-block supply for peptide chemistry labs.
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 FMOC-L-Proline?
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.
Related Products
- FMOC-Ala-OH (CAS 35661-39-3)
- FMOC-D-alanine (CAS 79990-15-1)
- Fmoc-D-Proline (CAS 101555-62-8)
- FMOC-L-Phenylalanine (CAS 35661-40-6)
- Fmoc-D-phenylalanine (CAS 86123-10-6)
- View all Amino acids
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.





