Description
Chemical Name:DL-Methionine
Cas No:59-51-8
EINECS No:200-432-1
Synonyms:(RS)-Methionine;Kochia fruit extract (10:1);DL-Met-OH;DL-METHIONINE (13C5,D8,15N);DL-METHIONINE (METHYL-13C);Kochia seed extract;BUFFER SOLUTION PH 4 AVS TITRINORM BOM
Molecular Formula:C5H11NO2S
Molecular Weight:149.21
Molecular Structure:
Specification:
Items | Specifications |
Cas No. | 59-51-8 |
EINECS | 200-432-1 |
Molecular Weight | 149.21 |
Appearance | White crystalline powder |
Density | 1.34 |
pKa | 2.13(at 25℃) |
Water solublity | 2.9 g/100 mL (20 ºC) |
Fp | / |
Melting Point | 284 °C |
PH | 5.6~6.1 |
Boiling point | 306.9±37.0 °C |
Transmittance, % | ≥98.0 |
Loss on Drying, % | ≤0.5 |
Residue on Ignition, % | ≤0.1 |
Heavy Metal, ppm | ≤0.002 |
Chloride, % | ≤0.02 |
Sulfate, % | ≤0.02 |
Function:
DL-Methionine is a sulfur-containing essential amino acid. In the body, it is one of the basic components of protein synthesis. The amino and carboxyl groups in the methionine molecule can participate in the formation of peptide bonds, thereby building the polypeptide chain of protein.
Methionine is an important methyl donor in the body. It can transfer its methyl group (-CH₃) to other compounds through transmethylation. In this process, methionine is first adenylated to generate S-adenosylmethionine (SAM), which is an active methyl donor that can participate in a variety of biosynthetic reactions and metabolic regulation processes.
Application:
It is widely used as an essential amino acid additive for animal feed. For poultry, livestock and other animals, methionine is an indispensable nutrient in their feed.
It plays a role in the treatment of certain diseases and nutritional support.
As a food additive, it is used to enhance the nutritional value of food. Methionine is added to some nutritionally fortified foods (such as infant formula, special medical purpose foods, etc.) to meet the body’s needs for essential amino acids. However, its application in food needs to strictly comply with food safety regulations and relevant standards to ensure that the amount added is within a safe and reasonable range to avoid excessive intake that may cause adverse effects on human health.
