Amines & Amides Available — Bulk Only

L-Lysine Hydrochloride (L-Lysine HCl)

CAS 657-27-2 · Formula C6H15ClN2O2 · MW 182.65 g/mol

The workhorse soluble lysine salt, supplied at feed scale for amino-acid balancing of animal diets. Its principal application is as a feed additive for animal nutrition; it is also used in food fortification and dietary supplements, and as a skin-conditioning ingredient in cosmetics.

Part of Amines & Amides
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HS Code
2922.41
At a Glance
Material Family
Amines & Amides
Record Type
Pure compound
Primary Role
Conditioning · Synthesis Intermediate
Functional Roles
LYSINE HCL
HAIR CONDITIONINGSKIN CONDITIONING
Applications & Use Cases
  • Feed additive: Amino-acid supplement for animal feed and nutrition.
  • Food fortification: Lysine enrichment of cereals and foods.
  • Nutritional supplement: Soluble amino-acid ingredient.
  • Cosmetic ingredient: Skin-conditioning agent.
Safety & Handling
Full SDS available on request

A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.

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HS / Tariff Classification
Harmonized System (HS) Code — 6-digit international heading
2922 . 41
Chapter 29
Organic chemicals
Heading 29.22
Internationally harmonized (WCO HS)
Subheading 2922.41
6-digit international code — national tariff line adds further digits
Chemical Identity
CAS Number
657-27-2
Molecular Formula
C6H15ClN2O2
Molecular Weight
182.65 g/mol
IUPAC Name
(2S)-2,6-diaminohexanoic acid;hydrochloride
INCI Name
LYSINE HCL
PubChem CID
InChI Key
BVHLGVCQOALMSV-JEDNCBNOSA-N
Synonyms & Trade Names
L-Lysine hydrochloride L-Lysine monohydrochloride lysine hydrochloride L-Lysine, monohydrochloride L-(+)-Lysine Monohydrochloride Lysine hcl, l- Lysine, l-, monohydrochloride Trulysine VIRALYS ENISYL-F (2S)-2,6-Diaminohexanoic acid monohydrochloride
Full Description

L-Lysine Monohydrochloride (CAS 657-27-2) is the hydrochloride salt of the essential amino acid L-lysine (C6H15ClN2O2). Its principal application is as a feed additive for animal nutrition; it is also used in food fortification and dietary supplements, and as a skin-conditioning ingredient in cosmetics.

Frequently Asked Questions

What is L-Lysine Monohydrochloride used for?

L-Lysine Monohydrochloride (CAS 657-27-2) is the hydrochloride salt of the essential amino acid L-lysine (C6H15ClN2O2). Its principal application is as an amino-acid feed additive for animal nutrition; it is also used in food fortification, dietary supplements, and as a skin-conditioning cosmetic ingredient.

Is L-lysine hydrochloride the same as L-lysine monohydrochloride?

Yes — the two names refer to the same compound, the monohydrochloride salt of L-lysine, CAS 657-27-2. "Monohydrochloride" simply specifies a 1:1 acid-to-base salt ratio.

Is L-Lysine Monohydrochloride water soluble?

Yes. The hydrochloride salt is the freely water-soluble form of L-lysine, which is why it is the standard grade for feed premixes, food fortification, and liquid supplement systems.

What is the CAS number, formula, and HS code?

CAS 657-27-2, formula C6H15ClN2O2, HS 2922.41 (lysine and its esters; salts thereof). Supplied to USP specification; lot-specific CoA and SDS are available on request.

What bulk packaging and order quantities are available?

It is distributed as a USP-grade ingredient in bulk packaging suited to feed and food manufacturing. Submit your target volume and documentation needs through a bulk RFQ for current pricing, pack sizes, and lead time.

Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.