Molekula
L-Lysine
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-Lysine is an essential amino acid critical for protein synthesis, muscle repair, and immune function, widely used in pharmaceuticals, animal nutrition, and sports supplements. This crystalline white powder has a CAS number of 56-87-1, molecular formula H2N(CH2)4CH(NH2)CO2H, and a molecular weight of 146.19. It is stable at ambient storage conditions and carries no hazard signal word. Molekula supplies L-Lysine 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 to off-white crystals or crystalline powder |
| Specific rotation | +25.0° - +27.0° |
| Identification | Conforms to reference |
| pH | 9.0 - 10.5 |
| Loss on Drying | ≤5.0% |
| Chloride (Cl-) | ≤0.03% |
| Assay | 98.5 - 101.5% |
| Residue on Ignition | ≤0.5% |
| Other amino acids | ≤0.5% |
| Iron (Fe) | ≤10ppm |
| Arsenic trioxide (As2O3) | ≤1ppm |
| Ammonium (NH4+) | ≤0.02% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Base |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Colorless crystals |
| Melting Point | 224 °C, decomposes |
| Water Solubility | 584 g/L at 27 °C |
| Vapour Pressure | 5.28 × 10⁹ mmHg at 25 °C (extrapolated) |
| pKa | pKa = 3.12 (at 0 °C) |
| log P (octanol/water) | -3.05 |
Source: PubChem CID 5962 (HSDB, DrugBank)
Identification
| Property | Value |
|---|---|
| SKU | 90030073 |
| CAS Number | 56-87-1 |
| IUPAC Name | (2S)-2,6-diaminohexanoic acid |
| EC Number | 200-294-2 |
| Molecular Formula | H2N(CH2)4CH(NH2)CO2H |
| Molecular Weight | 146.19 |
| Exact Mass | 146.1055 |
| SMILES | C(CCN)C[C@@H](C(=O)O)N |
| InChIKey | KDXKERNSBIXSRK-YFKPBYRVSA-N |
| InChI | InChI=1S/C6H14N2O2/c7-4-2-1-3-5(8)6(9)10/h5H,1-4,7-8H2,(H,9,10)/t5-/m0/s1 |
| PubChem CID | 5962 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 29224100 |
| Tariff Code | 2922410090 |
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
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)-2,6-Diaminohexanoic acid
- (S)-Lysine
- alpha-Lysine
- Aminutrin
- h-Lys-oh
- L-lys
- Lisina
- lysine
- lysine acid
- Lysinum
Frequently asked questions
What is L-Lysine commonly used for?
L-Lysine is primarily used as a dietary supplement to support muscle growth, immune function, and calcium absorption, and is also an essential amino acid in animal feed formulations.
What is the chemical formula and molecular weight of L-Lysine?
The chemical formula is **H₂N(CH₂)₄CH(NH₂)CO₂H**, and the molecular weight is **146.19 g/mol**.
How should L-Lysine be stored?
Store L-Lysine at **ambient temperature** in a cool, dry place, away from moisture and strong oxidizing agents.
What grades of L-Lysine does Molekula supply?
Molekula supplies **pharmaceutical-grade (USP/EP/BP)** and **food-grade (FDA-compliant)** L-Lysine.
Can Molekula supply L-Lysine in bulk quantities?
Yes, we offer L-Lysine in bulk, with flexible packaging options including drums, bags, and custom solutions based on your requirements.
What documentation comes with an order of L-Lysine?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS)**, and **batch-specific documentation** for traceability.
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.