Molekula
L-Proline USP Grade
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
L-Proline USP Grade is a non-essential amino acid widely used in pharmaceuticals, food and beverage flavoring, and as a chiral catalyst in chemical synthesis. It appears as a white crystalline powder with a sweet taste and is highly soluble in water. CAS: 147-85-3 | Molecular formula: C5H9NO2 | Molecular weight: 115.13 g/mol | Storage: Store at ambient temperature in a tightly sealed container, protected from moisture. No signal word required under GHS classification. Molekula supplies L-Proline USP Grade from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White crystals or crystalline powder |
| Specific rotation | -84.3° ~ 86.3° |
| Heavy metals | ≤ 15ppm |
| Loss on Drying | ≤0.4% |
| Chloride (Cl-) | ≤0.05% |
| Assay | 98.5 ~ 101.5% |
| Related Substances | Not more than 0.5% of any individual impurity is found； |
| Residue on Ignition | ≤0.4% |
| Total Impurities | Not more than 2.0% of total impurities is found |
| Iron (Fe) | ≤30ppm |
| Ammonium (NH4+) | ≤ 0.02% |
| Sulphates (SO4)(2-) | ≤0.03% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | White crystals or crystalline powder |
| Odour | Odorless |
| Melting Point | 220-222 °C, decomposes |
| Solubility (other solvents) | Very soluble in water, alcohol; insoluble in ether |
| log P (octanol/water) | -2.54 |
Source: PubChem CID 145742 (HSDB)
Identification
| Property | Value |
|---|---|
| SKU | 90033788 |
| CAS Number | 147-85-3 |
| IUPAC Name | (2S)-pyrrolidine-2-carboxylic acid |
| EC Number | 205-702-2 |
| Molecular Formula | C5H9NO2 |
| Molecular Weight | 115.13 |
| Exact Mass | 115.0633 |
| SMILES | C1C[C@H](NC1)C(=O)O |
| InChIKey | ONIBWKKTOPOVIA-BYPYZUCNSA-N |
| InChI | InChI=1S/C5H9NO2/c7-5(8)4-2-1-3-6-4/h4,6H,1-3H2,(H,7,8)/t4-/m0/s1 |
| PubChem CID | 145742 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 29339980 |
| Tariff Code | 2933998090 |
Safety & GHS
Precautionary statements
- P264 Wash thoroughly after handling
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Russian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- (-)-(S)-Proline
- (2S)-pyrrolidine-2-carboxylic acid
- (S)-2-Pyrrolidinecarboxylic acid
- (S)-Pyrrolidine-2-carboxylic acid
- 2-pyrrolidinecarboxylic acid
- L-Prolin
- L-proline
- prolina
- proline
- Prolinum
Frequently asked questions
What is L-Proline USP Grade commonly used for?
L-Proline USP Grade is primarily used in pharmaceuticals, nutritional supplements, and as a building block in peptide synthesis due to its high purity and compliance with USP standards.
What is the chemical formula and molecular weight of L-Proline USP Grade?
The chemical formula is C5H9NO2 and the molecular weight is 115.13 g/mol.
How should L-Proline USP Grade be stored?
Store in a tightly sealed container at ambient temperature, away from moisture and direct sunlight.
What grade of L-Proline does Molekula supply, and is USP Grade available?
Molekula supplies L-Proline USP Grade, meeting strict pharmaceutical standards for purity and quality.
Can Molekula supply L-Proline USP Grade in bulk quantities?
Yes, Molekula can supply L-Proline USP Grade in bulk, with flexible packaging options to meet your requirements.
What documentation comes with an order of L-Proline USP Grade?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and USP compliance documentation for traceability and quality assurance.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.