L-Selenomethionine

Synonyms

2-Amino-4-methylselanyl-butanoic acid; l-selenomethionine;seleno-l-methionine;
thallium ethylsufate; l-seleno-l-methionine; l-(+)-selenomethionine

Technical Data

CAS Number: 3211-76-5
Molecular Formula: C₅H₁₁NO₂Se
Molecular Weight: 196.1
EC Number: 608-705-0

FabriChem Specifications

ITEMS	SPECIFICATIONS
Identification	Positive for Se
Appearance	White crystalline powder
Loss on Drying	NMT 7.0%
pH	6 - 8.5
Particle Size	100.0% through 60 Mesh NLT 90.0% through 80 Mesh
Se Content	0.5 – 0.75%
DCP Content	NLT 98.0%
Bulk Density	Report Only
Lead	NMT 1 ppm
Arsenic	NMT 1 ppm
Mercury	NMT 1 ppm
Cadmium	NMT 1 ppm
Microbiology:
Total Plate Count	NMT 3,000 CFU/g
Yeast & Mold	NMT 300 CFU/g
Coliforms	Negative
E. Coli	Negative
Salmonella	Negative / 25g
Staph. Aureus	Negative
Pseudomonas	Negative

Molecular Structure

l-selenomenthionine-structure

About

Selenomethionine is a naturally occurring amino acid containing selenium. The L-enantiomer of selenomethionine, known as L-selenomethionine, is a common natural food source of selenium and is the predominant form of selenium found in Brazil nuts, cereal grains, soybeans, and grassland legumes. Selenomethionine is a compound shown to increase expression of glutathione peroxidase. Glutathione peroxidase protects cells from oxidative damage.