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 2000 · 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.
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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.
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.