DL-Methionine is a synthetic, racemic mixture of D- and L-methionine, and the most commercially vital essential sulfur-containing amino acid. As animals cannot synthesize it endogenously, it must be supplied via diet or supplements.
Physical Properties
Appearance: White crystalline powder/flake; slight characteristic odor
Solubility: Freely soluble in water; slightly soluble in ethanol; insoluble in ether
pH (10% aq): 5.6–6.1
Standards: Feed Grade ≥98.5%, Food/Pharma Grade ≥99.0% (FCC, USP, EP)
Our team focuses on Cosmetic active ingredients, bioactive materials, and plant extracts. In cosmetics, we develop high-purity, high-stability and skin-friendly active ingredients with anti-aging, moisturizing, repairing and brightening effects through biosynthesis. We provide safe and stable products for functional food, health care and biomedical fields. We strictly develop and produce high-quality APIs, supporting drug R&D and human health.
In addition, we have strong capabilities in customized peptide synthesis. We have a professional R&D team and an advanced synthesis platform, providing one-stop customized services covering linear peptides, complex cyclic peptides, peptide encapsulation and modification.




