β-Lactose mixture of stereoisomers ∼80% beta & ∼20% alpha
Leverantör: Thermo Scientific
Synonyms:
(2R,3R,4R,5S,6R)-6-(Hydroxymethyl)-5-(((2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)tetrahydro-2H-pyran-2,3,4-triol, β-D-Gal-(1→4)-β-D-Glc, beta-D-Lactose
412980020
412985000
ACRO412980020EA
2575
SEK
ACRO412980020
ACRO412985000
β-Lactose mixture of stereoisomers ∼80% beta & ∼20% alpha
β-Lactose
Formel:
C₁₂H₂₂O₁₁ MW: 342,29 g/mol Smältpunkt: 224 °C Storage Temperature: Omgivande |
MDL Number:
MFCD00064521 CAS nummer: 5965-66-2 |
Specifikation testresultat
Appearance | White to almost white Crystalline powder |
Infrared spectrum | Conforms |
Water | ≤1.0 % (K.F.) |
Loss on drying | ≤0.5 % (1 g, 80°C, 2 hrs) |
Sulfated ash | ≤0.1 % |
GC | ≤22 % (alpha-lactose) |
Appearance of solution | (per Ph. Eur.) Passes test |
Microbial contamination | (per Ph. Eur.) Passes test |
Acidity/alkalinity | ≤0.4 ml/6g (ml 0.1N NaOH/6g) |
Specific optical rotation | +54.4° to +55.9° (20°C, 589 nm) (c=10, H2O/NH3) (on anhydrous basis) |
Absorbance | (per Ph. Eur.) Passes test |
Heavy metals (as Pb) | ≤5 ppm |
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