- ▸ Cell-culture media: nitrogen source and supplement in microbiological and fermentation media
- ▸ Food & nutrition: flavoring agent and nutritional supplement ingredient
- ▸ Pharmaceutical synthesis: starting material and intermediate for active-ingredient manufacture
- ▸ Research reagent: laboratory biochemical and microbiological testing
- ▸ Asymmetric catalysis: organocatalyst for chiral synthesis
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
Request SDS →L-Proline (CAS 147-85-3) is a non-essential proteinogenic amino acid supplied as a crystalline powder. It is used as a component of microbiological culture media, as a flavoring agent and nutritional ingredient in food, and as a starting material in pharmaceutical synthesis. It also serves as a biochemical research reagent and an organocatalyst.
Frequently Asked Questions
What is L-Proline used for?
L-Proline (CAS 147-85-3) is a non-essential proteinogenic amino acid supplied as a crystalline powder. It is used as a component of microbiological culture media, as a flavoring agent and nutritional ingredient in food, as a starting material in pharmaceutical synthesis, and as an organocatalyst for asymmetric (chiral) synthesis.
What is the pKa of proline?
Proline has two ionizable groups: a carboxyl group with a pKa near 1.99 and the secondary-amine (imino) group with a pKa near 10.6, giving an isoelectric point around pH 6.3. Confirm exact figures against your lot specification and reference data.
Where does L-Proline come from?
Commercial L-proline is typically produced by microbial fermentation, yielding the single L-enantiomer as a crystalline powder. This material is supplied to USP specification with Kosher certification.
What is the CAS number, formula, and HS code?
CAS 147-85-3, formula C5H9NO2, HS 2922.49 (oxygen-function amino-compounds, other). Supplied USP-grade and Kosher-certified; lot-specific CoA and SDS are available on request.
What bulk packaging and order quantities are available?
It is distributed as a USP/Kosher-grade ingredient in bulk packaging for manufacturing and media applications. Submit your target volume and documentation needs through a bulk RFQ for current pricing, pack sizes, and lead time.