L-Lysine monohydrochloride 657-27-2

Produced by: Shanghai Yifu Food Ingredients Co., Ltd

All supplier products

Basic Molecular and Structural Characteristics

Molecular weight: 182.65 g/mol (free L-lysine: 146.19 g/mol; the hydrochloride moiety increases the molecular weight and modulates solubility/ stability).
Chirality: L-configuration (the natural and biologically active isomer; D-lysine is non-bioactive and rarely used in industrial applications). The chiral center is at the α-carbon atom (C2), with the amino group (−NH3+) in the L-configuration (S-configuration in CIP nomenclature).
Ionic nature: At physiological pH (7.35–7.45) and aqueous solution, it exists as a zwitterion with a hydrochloride counterion: the α-amino group (−NH2) and ε-amino group (−NH2) are protonated to NH3+, the carboxyl group (−COOH) is deprotonated to COO−, and the Cl− ion remains free in solution to maintain electrical neutrality.
Structural formula: H2N−(CH2)4−CH(NH3+)−COO−⋅Cl− (zwitterionic form in water); the neutral molecular formula for the solid salt is NH2−(CH2)4−CH(NH2)−COOH⋅HCl.
Isoelectric point (pI): ~9.74 (calculated from its three dissociation constants: pKa1 (α-COOH) = 2.18, pKa2 (α-NH3+) = 8.95, pKa3 (ε-NH3+) = 10.53). At pH < 9.74, it carries a net positive charge in solution— a key feature for its interaction with anionic biomolecules (e.g., proteins, nucleic acids).

	L-proline Bulk supply	The physiological functions and applications of L-proline1. Functions within living organismsCollagen synthesis: As the main component of collagen ...
	L-proline Market quotation	L-proline, to ensure its stable quality and performance, certain conditions need to be met during storage. The following is a detailed introduction...
	Inositol in functional foods and health supplements	Inositol is a core active ingredient in functional foods and health supplements. As a special vitamin‑like substance, it regulates human glucose an...
	High purity Sucralose	Thermal properties of SucraloseMelting point / Decomposition point: Approximately 125°C (decomposition temperature), some testing methods give ...
	DL-Alanine Price	While DL-Alanine is not a direct preservative like Nisin or sodium benzoate, it can indirectly extend food shelf life byregulating the microbial gr...

High quality N‑Acetyl‑L‑Tryptophan Powder	Seller: 846340	Basic Information of N‑Acetyl‑L‑Tryptophan 1. Core Identity Chemical Name: N‑α‑Acetyl‑L‑try...
N‑Acetyl‑L‑Tryptophan Powder Price	Seller: 846340	Key Points for Storing N‑Acetyl‑L‑Tryptophan (NAT) Short, practical storage rules focusing on moi...
N-Acetyl-L-Tryptophan Powder Marke quotation	Seller: 846340	Precautions for the Use of N‑Acetyl‑L‑Tryptophan (NAT) Below is a clear, practical summary of pre...
Wholesale N-Acetyl-L-Tryptophan Powder	Seller: 846340	N‑Acetyl‑L‑Tryptophan as Key Advantages for Food Applications High stability: Withstands processi...
N-Acetyl-L-Tryptophan Powder Supplier	Seller: 846340	N‑Acetyl‑L‑Tryptophan as Regulatory Status (Summary)China: Approved as a food additive (flavor en...