Molekula
L-Leucine ph. Eur 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-Leucine ph. Eur grade is an essential branched-chain amino acid (BCAA) widely used in pharmaceuticals, nutritional supplements, and clinical research for muscle synthesis, metabolic studies, and protein formulations. It meets European Pharmacopoeia (Ph. Eur) standards for purity and quality. CAS 61-90-5, molecular formula C6H13NO2, molecular weight 131.17 g/mol. Stored at ambient conditions with no hazard classification or signal word. Molekula supplies L-Leucine ph. Eur 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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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 or almost white, crystalline powder or shiny flakes. |
| Impurity A | (570nm) ≤0.8% |
| Specific rotation | +14.5° ~ +16.5° |
| Loss on Drying | ≤0.5% |
| Chloride (Cl-) | ≤200ppm |
| Assay | 98.5 ~ 101.0% |
| Sulphated Ash | ≤0.1% |
| Appearance of Solution | BY6 |
| Total Impurities | ≤1.0% |
| Heavy Metals (Pb) | ≤10ppm |
| Iron (Fe) | ≤10ppm |
| Ammonium (NH4+) | (570nm) ≤0.02% |
| Sulphates (SO4)(2-) | ≤300ppm |
| Ninhydrin positive substances - For each impurity | ≤0.2% |
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 |
| Melting Point | 293 °C |
| Density | 1.293 g/cm³ at 18 °C |
| Water Solubility | 21.5 g/L at 25 °C |
| Solubility (other solvents) | Soluble in water, acetic acid, dilute HCl, and alkaline hydroxides and carbonates |
| Vapour Pressure | 0.00000001 mmHg |
| pKa | pKa = 2.35 (at 13 °C) |
| log P (octanol/water) | -1.52 |
Source: PubChem CID 6106 (HSDB, DrugBank, Joint FAO/WHO Expert Committee on Food Additives (JECFA), Haz-Map)
Identification
| Property | Value |
|---|---|
| SKU | 90036349 |
| CAS Number | 61-90-5 |
| IUPAC Name | (2S)-2-amino-4-methylpentanoic acid |
| EC Number | 200-522-0 |
| Molecular Formula | C6H13NO2 |
| Molecular Weight | 131.17 |
| Exact Mass | 131.0946 |
| SMILES | CC(C)C[C@@H](C(=O)O)N |
| InChIKey | ROHFNLRQFUQHCH-YFKPBYRVSA-N |
| InChI | InChI=1S/C6H13NO2/c1-4(2)3-5(7)6(8)9/h4-5H,3,7H2,1-2H3,(H,8,9)/t5-/m0/s1 |
| PubChem CID | 6106 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29224949 |
| Tariff Code | 2922498590 |
Safety & GHS
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P264 Wash thoroughly after handling
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P403+233 Store in a well ventilated place. Keep container tightly closed
- P501 Dispose of contents/container to an approved waste disposal plant
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, 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
- (2S)-2-amino-4-methylpentanoic acid
- (S)-2-Amino-4-methylpentanoic acid
- (S)-2-Amino-4-methylvaleric acid
- (S)-Leucine
- L-alpha-Aminoisocaproic acid
- L-leucine
- Leucin
- leucine
- LEUCINE, L-
- Leucinum
Frequently asked questions
What is L-Leucine used for in pharmaceutical applications?
L-Leucine (ph. Eur grade) is primarily used as a nutritional supplement in parenteral and enteral formulations, and as an amino acid building block in peptide synthesis for pharmaceuticals.
What is the chemical formula and molecular weight of L-Leucine?
The chemical formula is **C6H13NO2**, and the molecular weight is **131.17 g/mol**.
How should L-Leucine (ph. Eur grade) be stored?
Store in a tightly sealed container at **ambient temperature**, away from moisture and direct sunlight.
Is L-Leucine ph. Eur grade available in bulk quantities?
Yes, Molekula supplies L-Leucine (ph. Eur grade) in bulk, with flexible packaging options (e.g., drums, bags) based on customer requirements.
What documentation is provided with an order of L-Leucine ph. Eur grade?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS)**, and **ph. Eur compliance certificate** to ensure quality and regulatory adherence.
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.