Methionine  is an α-amino acid, it is essential amino acid for human development. It is one of 20 standard amino acids.

Nutritional Phytochemical Analytical Laboratory

Molecular Weight: 149.21

Molecular Formula:  C₅H₁₁NO₂S

IUPAC Name: (S)-2-amino-4-(methylsulfanyl)-butanoic acid

CAS Name: Methionine

CAS number:  63-68-3

One Letter Code:  M

Three Letter Code: Met

Methionine

Structural Formula

3D Structural Formula