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D-Lactose monohydrate

ACS reagent

4-O-β-D-Galactopyranosyl-D-glucose, Milk sugar, β-D-Gal-(1→4)-D-Glc
Empirical Formula (Hill Notation):
C12H22O11 · H2O
CAS Number:
Molecular Weight:
EC Number:
MDL number:
PubChem Substance ID:


ACS reagent


Dextrose, passes test
Sucrose, passes test
≤0.005% Insoluble matter
4.0-6.0% Water (H2O)

ign. residue


cation traces

Fe: ≤5 ppm
heavy metals (as Pb): ≤5 ppm

SMILES string




InChI key


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