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

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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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