... :L-Methionine-2,Chemical name:(S)-2-Amino-4-(methylthio)butyric acid -3,Specifications : ≥99%-4,Molecular Formula :C5H11NO2S-5,Molecular Weight :149 ... .21-6,CAS Number: 63-68-3 -7,Appearance: Colorless crystal or white shiny flakes or white ... Air/ Sea as per Qty.-2,Samples: Within 48 Hours.-3,Web: http://www.aladinggroup.com L-Methionine