L-Methionine CAS 63-68-3 Methionine

L-2-Amino-4-(methylthio)butyric acid
CAS 63-68-3
Assay 99%min
Packing 25kg/drum

L-Methionine

Name	L-Methionine
Synonyms	L-2-Amino-4-(methylthio)butyric acid
Molecular Structure
Molecular Formula	C₅H₁₁NO₂S
Molecular Weight	149.21
CAS Registry Number	63-68-3
EC Number	200-562-9

Specification:

Tests	Specification
Appearance	White crystals or crystalline powder
Identification	Infrared absorption
Assay	NLT 98.5% and NMT 101.5%
Residue on ignition	NMT 0.4%
Loss on drying	NMT 0.3%
Chloride	NMT 0.05%
Sulfate	NMT 0.03%
Iron(Fe)	NMT 30ppm
Heavy metals	NMT 15ppm
Lead (Pb)	NMT 1.0ppm
Arsenic (As)	NMT 0.5ppm
Cadmium (Cd)	NMT 0.5ppm
Mercury (Hg)	NMT 0.1ppm
Related compounds	Individual impurities: NMT0.5%
Related compounds	Total impurities: NMT 2.0%
Specific rotation[α]D25	+22.4~+24.7
PH	5.6-6.1
Total Aerobic Microbial Count	NMT 1000 cfu/g
Yeasts and mold Count	NMT 100 cfu/g
Coliform bacteria	Negative/10g
Salmonella sp	Negative/10g
Staphylococcus aureus	Negative/10g

Uses:

1、 Food industry applications

-Nutritional fortifiers

Used for infant formula food, special medical use food, and sports nutrition products.

-Flavor improver

Collaborate with other amino acids to enhance the freshness of baked goods, meat products, and seasonings.

-Antioxidant

Delay the oxidation and rancidity of high-fat foods, and extend their shelf life.

2、 Feed additives

-Animal nutrition supplement

Promote protein synthesis in poultry, pigs, and ruminants, improve feed utilization and growth rate.

-Functional improvement

Enhance the disease resistance of livestock and poultry, and improve meat quality.

3、 Medical and health field

-Liver protection

As a precursor of glutathione, it assists in detoxification and treatment of acetaminophen poisoning.

Storage:Sealed room temperature storage

Standard:USP40/EP11.0/CP2020/AJI92

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