L(+)-Histidine 98%
Marques : Thermo Fisher ScientificTotal Evaluation: 0
Moyenne des Notes : 0.0 sur 5
Synonyme(s):
H, (S)-(+)-Histidine, His, H-His-OH
Formule:
C₆H₉N₃O₂ Poids moléculaire: 155.16 g/mol Point de fusion: 282 °C (déc.) Température de stockage: Température ambiante |
Numéro MDL:
MFCD00064315 Numéro CAS: 71-00-1 EINECS: 200-745-3 Indice Merck: 13,04741 |
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Résultats des tests de spécification
Appearance | White Crystalline powder or crystals |
Infrared spectrum | Conforms |
Loss on drying | ≤0.2 % (105°C, 3 h) |
Sulfated ash | ≤0.1 % |
UV transmittance | ≥98 % (c=5, H2O, 430 nm) 1 cm cell |
pH | 7.0 to 8.5 (2 % in water) |
Specific optical rotation | +12.0° to +14.0° (20°C, 589 nm) (c=11, 6 N HCl) (on dry substance) |
Titration with HClO4 | 97.5 to 102.5 % (On dry substance) |
Chloride (Cl) | ≤200 ppm |
Sulfate (SO4) | ≤200 ppm |
Ammonium (NH4) | ≤200 ppm |
Iron (Fe) | ≤10 ppm |
Heavy metals (as Pb) | ≤10 ppm |
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