L-Methionine 98+%

Supplier: THERMO FISHER SCIENTIFIC CHEMICALS

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ThermoScintific Chemicals

ThermoScintific Chemicals

Synonyms: (S)-(-)-2-Amino-4-(methylthio)butyric acid, (S)-(-)-Methionine, L(-)-Methionine, (S)-(-)-2-Amino-4-(methylthio)butanoic acid, H-Met-OH, Methionine, (S)-2-Amino-4-(methylthio)butanoic acid

16616-1000 16616-5000 16616-0025 16616-0250

TS16616-1000EA 82.2 USD

TS16616-1000 TS16616-5000 TS16616-0025 TS16616-0250

L-Methionine 98+%

L-Methionine

Formula: C₅H₁₁NO₂S
MW: 149.21 g/mol
Melting Pt: 276…279 °C (dec.)
Storage Temperature: Refrigerator

MDL Number: MFCD00063097
CAS Number: 63-68-3
EINECS: 200-562-9
Merck Index: 13,06004

Specification Test Results

Appearance	White Crystalline powder or crystals
Infrared spectrum	Conforms
Loss on drying	≤0.5 % (1 g, 105°C)
Sulfated ash	≤0.4 %
TLC	≤0.5 % of any individual impurity
pH	5.5 to 6.5 (1 % in water)
Specific optical rotation	+22.4° to +24.7° (20°C, 589 nm) (c=2, 6 N HCl)
Titration with HClO4	98.0 to 102.0 % (on dried basis)
Chloride (Cl)	≤500 ppm
Sulfate (SO4)	≤300 ppm
Iron (Fe)	≤30 ppm
Heavy metals (as Pb)	≤15 ppm

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