CERTIFICATE OF ANALYSIS
PRODUCT NAME:L-METHIONINE
CAS NO:59-51-8
FORMULA: C5H11NO2S
MOLAR MASS:149.21 g·mol−1
APPEARNCE:White crystalline powder
MELTING POINT:281 °C
DENSITY:1.340 g/cm3
INFORMATION OF L-METHIONINE:Methionine (abbreviated as Met or M; encoded by the codon AUG) is an α-amino acid that is used in the biosynthesis of proteins. It contains an α-amino group (which is in the protonated −NH3+ form under biological conditions), an α-carboxylic acid group (which is in the deprotonated −COO− form under biological conditions), and an S-methyl thioether side chain, classifying it as a non-polar,aliphatic amino acid. It is essential in humans, meaning the body cannot synthesize it and thus it must be obtained from the diet.