L-Methionine

• Catalog No.: 64320
• CAS Number: 63-68-3
• M. F.: C5H11NO2S
• M. W.: 149.21134
• Purity: ≥99.0% (NT)

SYNONYMS

• Title: L-甲硫氨酸
• IUPAC name: (2S)-2-amino-4-(methylsulfanyl)butanoic acid
• IUPAC Traditional name: L-methionine
• Synonyms: (S)-2-氨基-4-(甲硫基)丁酸; L-2-氨基-4-(甲硫基)丁酸; (S)-2-Amino-4-(methylmercapto)butyric acid; L-2-Amino-4-(methylthio)butanoic acid

DATABASE IDS

• Beilstein Number: 1722294
• EC Number: 200-562-9
• MDL Number: MFCD00063097
• CAS Number: 63-68-3

PROPERTIES

• Antion Traces: chloride (Cl-): ≤50 mg/kg
• Antion Traces: sulfate (SO42-): ≤50 mg/kg
• Cation Traces: Ca: ≤10 mg/kg
• Cation Traces: Cd: ≤5 mg/kg
• Cation Traces: Co: ≤5 mg/kg
• Cation Traces: Cr: ≤5 mg/kg
• Cation Traces: Cu: ≤5 mg/kg
• Cation Traces: Fe: ≤5 mg/kg
• Cation Traces: K: ≤50 mg/kg
• Cation Traces: Mg: ≤5 mg/kg
• Cation Traces: Mn: ≤5 mg/kg
• Cation Traces: NH4+: ≤100 mg/kg
• Cation Traces: Na: ≤100 mg/kg
• Cation Traces: Ni: ≤5 mg/kg
• Cation Traces: Pb: ≤5 mg/kg
• Cation Traces: Zn: ≤5 mg/kg
• Ignition Residue: ≤0.1% (as SO4)
• Impurities: ≤0.5% foreign amino acids
• Linear Formula: CH3SCH2CH2CH(NH2)CO2H
• Loss on Drying: ≤0.1% loss on drying, 110 °C
• Purity: ≥99.0% (NT)
• Melting Point: 284 °C (dec.)(lit.)
• Optical Rotation: [α]20/D +23.7±0.5°, c = 5% in 5 M HCl
• Personal Protective Equipment: Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter
• RTECS: PD0457000
• German water hazard class: 1