L-Metionina ≥99%, Millipore®
Dostawca: Merck
Synonim:
(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
M-Clarity™ quality level = MQ100
1.05707.1000
1.05707.9010
1.05707.1000EA
2200
PLN
1.05707.1000
1.05707.9010
L-Metionina ≥99%, Millipore®
L-Metionina
Formuła:
C₅H₁₁NO₂S Temp. Wrzenia: 278 °C (1013 hPa) Temp. topnienia: 136 °C Gęstość: 1,373 g/cm³ (20 °C) Temperatura przechowywania: Temperatura otoczenia |
Numer MDL:
MFCD00063097 Numer CAS: 63-68-3 Numer WE (dawny EINECS): 200-562-9 Klasyfikacja Merck : 13,06004 |
Wyniki testów specyfikacyjnych
Assay (HClO4-titration) | 99% min |
Ammonium (NH4) | 0.01% max |
Appearance | Passes test |
Appearance of solution (0.5mol/L, HCl 1mol/L) | Passes test |
Arsenic (As) | 0.0005% max |
Calcium (Ca) | 0.001% max |
Chloride (Cl) | 0.02% max |
Cobalt (Co) | 0.0005% max |
Foreign amino acids | 0.3% max |
Heavy metals (as Pb) | 0.001% max |
Identity (IR-spectrum) | Passes test |
Iron (Fe) | 0.0005% max |
Loss on drying [105°, 3 hr) | 0..3% max |
Magnesium (Mg) | 0.0005% max |
Other ninhydrine positive substances (as glycine) | 0.1% max |
Potassium (K) | 0.0005% max |
Sodium (Na) | 0.005% max |
Specific rotation ([a]20/D, 5%, in 1N HCl) | +22.5-+23.5° |
Sulfate (SO4) | 0.01% max |
UV Absorption (260nm, 0.5mol/L, 1cm, HCl 1mol/L) | 0.5 max |
UV Absorption (280nm, 0.5mol/L, 1cm, HCl 1mol/L) | 0.2 max |
Zinc (Zn) | 0.0005% max |
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