D-Lysine（CAS# 923-27-3)

Introduction

D-lysine is an amino acid that belongs to one of the essential amino acids required by the human body. The following is a detailed introduction to the properties, uses, preparation methods and safety information of D-lysine:

Quality:

D-Lysine is a white crystalline powder that is soluble in water and hot water, and almost insoluble in alcohols and ethers. It has two asymmetric carbon atoms and two enantiomers are present: D-lysine and L-lysine. D-lysine is structurally identical to L-lysine, but their spatial configuration is mirror-symmetrical.

Uses: D-Lysine can also be used as a nutritional supplement to enhance the body's immunity and promote muscle growth.

Method:

There are several ways to prepare D-lysine. A common approach is the use of microorganisms for fermentation production. By selecting a suitable strain of microorganisms, focusing on the metabolic pathway of synthetic lysine, D-lysine is produced through a fermentation process.

Safety Information:

D-lysine is a safe and non-toxic substance with no significant side effects in general. For certain groups of people, such as pregnant women, lactating women, or people with chronic diseases, it should be used under the guidance of a doctor. When using D-lysine, the appropriate dosage and usage should be followed according to individual circumstances and dosage guidelines. In case of discomfort or allergic reaction, discontinue use immediately and consult a physician.

Application
D-Lysine (CAS 923-27-3) is the non-natural D-enantiomer of the essential amino acid lysine. It is a versatile chiral building block with high optical purity (≥99.5% by chiral HPLC), widely used in pharmaceutical R&D, peptide synthesis, and biomaterials. As a key pharmaceutical intermediate, it serves as an analog of luteinizing-hormone-releasing hormone (LHRH) and as a drug carrier in the form of polylysine. In peptide synthesis, D-Lysine enables the creation of protease-resistant therapeutic peptides and antimicrobial peptides with enhanced activity and selectivity. It is also employed in exploring protein folding, enzymatic specificity, and non-enzymatic glycation. In biotechnology, poly-D-lysine functions as a nonspecific adhesion-promoting molecule and polymeric drug carrier. D-Lysine reduces renal uptake of radiolabeled peptides during scintigraphy and PRRT, offering low toxicity without interfering with natural amino acid metabolism. Additional applications include animal nutrition as a feed additive, cosmetics for skin hydration, and food fortification. Xinchem offers custom synthesis and contract manufacturing of high-purity D-Lysine with flexible scaling from R&D to commercial tons. Contact us today for a competitive quote and reliable global supply.