Molekula
L-Lysine dihydrochloride
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-Lysine dihydrochloride is an essential amino acid derivative widely used in pharmaceuticals, animal nutrition, and sports supplements for its role in protein synthesis, immune support, and growth promotion. It is also employed in biochemistry research and as a nutrient additive in intravenous solutions. This chemical has a CAS number of 657-26-1, a molecular formula of C6H15ClN2O2, and a molecular weight of 182.65 g/mol. It requires storage between 2 to 8°C and carries no signal word for hazard classification.
Molekula supplies L-Lysine dihydrochloride at >99% purity in 25 g packs, from £37.08 inc. VAT. It is made or sourced to order. Every batch ships with a certificate of analysis. Larger quantities, up to multi-tonne, are quoted on request.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
On backorder — expected to ship by 5 December 2026
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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25 g — £30.90 per pack ex VAT · £37.08 inc. VAT
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 crystalline powder |
| Melting Point | 200 - 205 Deg C |
| Water | <0.5% |
| Optical Rotation | +15.9 |
| Assay (Titration ex Chloride) | >99% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 76737817 |
| CAS Number | 657-26-1 |
| IUPAC Name | (2S)-2,6-diaminohexanoic acid;dihydrochloride |
| EC Number | 211-518-3 |
| Molecular Formula | C6H15ClN2O2 |
| Molecular Weight | 182.65 |
| Exact Mass | 218.0589 |
| SMILES | C(CCN)C[C@@H](C(=O)O)N.Cl.Cl |
| InChIKey | JBBURJFZIMRPCZ-XRIGFGBMSA-N |
| InChI | InChI=1S/C6H14N2O2.2ClH/c7-4-2-1-3-5(8)6(9)10;;/h5H,1-4,7-8H2,(H,9,10);2*1H/t5-;;/m0../s1 |
| PubChem CID | 69567 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29224100 |
| Tariff Code | 2922410090 |
Safety & GHS
Detailed safety information available in the SDS — see Documents below.
Documents
Safety Data Sheets (SDS)
We haven't published a Safety Data Sheet for this product yet. Ask us and we'll send you one.
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
- (2S)-2,6-diaminohexanoic acid;dihydrochloride
- (S)-2,6-Diaminohexanoic acid dihydrochloride
- H-Lys-OH.2HCl
- L-Lysine diHCl
- L-Lysine, hydrochloride (1:2)
- Lysine 2HCL
- Lysine dihydrochloride
- lysine, chloride, chloride
- Lysine, dihydrochloride, L-
- s10365
Frequently asked questions
What is L-Lysine dihydrochloride commonly used for?
L-Lysine dihydrochloride is primarily used as a nutritional supplement, in animal feed, and as a precursor in pharmaceutical synthesis, including the production of lysine-based drugs.
What is the chemical formula and molecular weight of L-Lysine dihydrochloride?
The chemical formula is C6H15ClN2O2 and the molecular weight is 182.65 g/mol.
How should L-Lysine dihydrochloride be stored?
Store at 2 to 8°C in a cool, dry place, away from direct sunlight and moisture.
What grades of L-Lysine dihydrochloride does Molekula supply?
Molekula supplies L-Lysine dihydrochloride as a white crystalline powder with an assay of >99% (titration ex chloride), water content below 0.5%, a melting point of 200 - 205°C and an optical rotation of +15.9.
Can Molekula supply L-Lysine dihydrochloride in bulk quantities?
Yes, Molekula offers bulk quantities of L-Lysine dihydrochloride, with flexible packaging options to meet customer requirements.
What documentation comes with an order of L-Lysine dihydrochloride?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and batch-specific documentation to ensure traceability and compliance.
Where can I buy L-Lysine dihydrochloride?
Directly from Molekula, which lists L-Lysine dihydrochloride in 25 g packs from £37.08 inc. VAT, with a certificate of analysis for every batch. Larger quantities are quoted on request. Molekula's offices: United Kingdom, France, Spain, Germany, Italy, United States and China.
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.