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selenomethionine

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Origin: China

Cas No: 1464-42-2

Specification: 99%min

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CAS No.: 1464-42-2 Formula: C5H11NO2Se Molecular Weight: 196.10600

Description

Selenomethionine is a naturally occurring amino acid. The L-selenomethionine enantiomer is the main form of selenium found in Brazil nuts, cereal grains, soybeans, and grassland legumes, while Se-methylselenocysteine, or its γ-glutamyl derivative, is the major form of selenium found in Astragalus, Allium, and Brassica species. In vivo, selenomethionine is randomly incorporated instead of methionine. Selenomethionine is readily oxidized.
Selenomethionine's antioxidant activity arises from its ability to deplete reactive oxygen species.

Basic Info

Chemical Name	selenomethionine
Synonyms	DL-Selenomethionine; Seleno-DL-methionine; 2-Amino-4-(methylseleno)butyric Acid; Selenomethionine; Selenium methionine;
CAS No.	1464-42-2
Molecular Formula	C5H11NO2Se
Molecular Weight	196.10600
PSA	63.32000
LogP	0.65930

Properties

Appearance & Physical State	white crystalline solid
Boiling Point	320.8ºC at 760mmHg
Melting Point	267-269ºC
Flash Point	147.8ºC
Storage Condition	-20ºC
Vapor Pressure	6.45E-05mmHg at 25°C

Safety Info

Safety Statements	S20/21-S28-S45-S60-S61
HS Code	2930909090
RIDADR	UN 3283
Risk Statements	R23/25; R33; R50/53
Hazard Codes	T; N

Synthesis Route

Dimethyl Diselenide+(l)α-amino-γ-butyrolactone hydroiodide→selenomethionine+selenomethionine
methylselenol+homoserine lactone→selenomethionine+selenomethionine
methylselenol+(l)α-amino-γ-butyrolactone hydroiodide→selenomethionine+selenomethionine

Precursor

(l)α-amino-γ-butyrolactone hydroiodide
Dimethyl Diselenide
methylselenol
homoserine lactone

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