L-Selenomethionine

Molecular Formula
C5H11NO2Se
Catalog Number
S2026
Supplier/Brand
Spectrum Chemical
CAS Number
3211-76-5

L-Selenomethionine, also known as MSE, is an amino acid containing selenium and readily oxidized. Its ability to deplete reactive oxygen species causes its antioxidant activity. Ungraded products supplied by Spectrum are indicative of a grade suitable for general industrial use or research purposes and typically are not suitable for human consumption or therapeutic use.


Synonyms: S-(+)-2-Amino-4-(methylseleno)butanoic Acid

Shipping Information

Item must ship on ice via 2nd day air. During summer months, item will ship next day air. Additional freight charges will apply.

DOT: UN3283, Selenium compound, solid, n.o.s. (L-selenomethionine), 6.1, PG III

Largest individual container shippable via:
UPS/FedEx Ground: 12 kg    UPS Air: 250 g    FedEx Air: 25 kg

Additional UPS-imposed hazardous material charge.

Storage Information

REFRIGERATE: Keep tightly closed.

Certificates of Analysis

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2023