L-Lysine dihydrochloride
Also known as: L-Lysine dihydrochloride, L-Lysine hydrochloride (1:2), (S)-2,6-Diaminohexanoic acid dihydrochloride, H-Lys-OH·2HCl, (2S)-2,6-Diaminohexanoic acid dihydrochloride, L-Lysine dichlorhydrate, Lysine dihydrochloride
L-Lysine dihydrochloride (CAS 657-26-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H16Cl2N2O2 and a molecular weight of 219.109 g/mol. Key properties include a melting point of 200-206 °C(lit.), a boiling point of 311.5ºC at 760 mmHg and a flash point of 142.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 657-26-1
- Jingsj CID
- J-1065586-4
- Molecular Formula
- C6H16Cl2N2O2
- Molecular Weight
- 219.109 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 200-206 °C(lit.) |
|---|---|
| Boiling Point | 311.5ºC at 760 mmHg |
| Flash Point | 142.2ºC |
| Exact Mass | 218.058884 |
| PSA | 89.34000 |
| LogP | 2.53190 |
| Refractive Index | 15 ° (C=2, H2O) |
Activity & Biological Data
| Additional Information | [1]. Luckose F, et al. Effects of amino acid derivatives on physical, mental, and physiological activities. Crit Rev Food Sci Nutr. 2015;55(13):1793-1144. |
|---|
Frequently Asked Questions
What is the CAS number of L-Lysine dihydrochloride?
The CAS number of L-Lysine dihydrochloride is 657-26-1.
What are the molecular formula and molecular weight of L-Lysine dihydrochloride?
L-Lysine dihydrochloride has molecular formula C6H16Cl2N2O2 and molecular weight 219.109 g/mol.
What are the upstream and downstream products of L-Lysine dihydrochloride?
For L-Lysine dihydrochloride, Upstream Products: L-Lysine, Nalpha,Nepsilon-Di-Boc-L-lysine 4-nitrophenyl ester; Downstream Products: N6-[(9H-Fluoren-9-ylmethoxy)carbonyl]-L-lysine.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "L-Lysine dihydrochloride (CAS 657-26-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1065586-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.