D-Methionine 99+%

Supplier: Thermo Scientific Chemicals

ThermoScintific Chemicals

ThermoScintific Chemicals

Synonyms: D(+)-Methionine, (R)-2-Amino-4-(methylthio)butanoic acid, (R)-(+)-2-Amino-4-(methylthio)butyric acid, (R)-(+)-2-Amino-4-(methylthio)butanoic acid, (R)-(+)-Methionine, H-D-Met-OH

22721-0050 22721-0250 22721-1000

TS22721-0050EA 54 USD

TS22721-0050 TS22721-0250 TS22721-1000

D-Methionine 99+%

D-Methionine

Formula: C₅H₁₁NO₂S
MW: 149.21 g/mol
Melting Pt: 273…275 °C (dec.)
Storage Temperature: Refrigerator

MDL Number: MFCD00002622
CAS Number: 348-67-4
EINECS: 206-483-6
Merck Index: 13,06004

Specification Test Results

Appearance	White to off-white Powder
Infrared spectrum	Conforms
Loss on drying	≤0.3 %
Sulfated ash	≤0.1 %
UV transmittance	≥98 % (c=3, H2O, 430 nm) 1 cm cell
Specific optical rotation	-23° to -25° (20°C, 589 nm) (c=8, 6 N HCl) (on dried substance)
Titration with HClO4	99.0 to 101.0 % (on dried substance)
Chloride (Cl)	≤300 ppm
Sulfate (SO4)	≤300 ppm
Ammonium (NH4)	≤200 ppm
Arsenic (As)	≤1 ppm
Iron (Fe)	≤10 ppm
Heavy metals (as Pb)	≤10 ppm
Other amino acids	(TLC) not detectable

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