DL-Metionina 99+%
Fornitore: Thermo Scientific
Synonyms:
2-Amino-4-(methylthio)butanoic acid, (±)-2-Amino-4-(methylthio)butyric acid, Methioninum racemicum, Methionine racematic, H-DL-Met-OH, (±)-Methionine, (±)-2-Amino-4-(methylthio)butanoic acid
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EUR
ACRO125650025
ACRO125651000
ACRO125652500
ACRO125650010
DL-Metionina 99+%
DL-Metionina
Formula:
C₅H₁₁NO₂S Peso molecolare: 149,21 g/mol Punto di fusione: 270…273 °C (dec.) Densità: 1,34 g/cm³ Temperatura di stoccaggio: Refrigerata |
MDL Number:
MFCD00063096 CAS Number: 59-51-8 EINECS: 200-432-1 Merck Index: 13,06004 |
Risultati del test di specificazione
Appearance | White Crystalline powder or crystals |
Infrared spectrum | Conforms |
Loss on drying | ≤0.5 % (1 g, 105°C) |
Sulfated ash | ≤0.1 % |
UV transmittance | ≥95 % (c=10, 2 N HCl, 430 nm) 1 cm cell |
pH | 5.4 to 6.1 (2 % w/v in water) |
Titration with HClO4 | 99.0 to 101.0 % (on dried substance) |
Chloride (Cl) | ≤200 ppm |
Sulfate (SO4) | ≤200 ppm |
Ammonium (NH4) | ≤1000 ppm |
Heavy metals (as Pb) | ≤10 ppm |
Other amino acids | ≤0.2 % (TLC) |
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