MilliporeSigma
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61345

Sigma-Aldrich

D-Lactose monohydrate

≥98.0% (HPLC)

Synonym(s):
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:
360.31
Beilstein:
3768231
EC Number:
MDL number:
PubChem Substance ID:

Quality Level

assay

≥98.0% (HPLC)

form

solid

optical activity

[α]20/D +52±2°, 22 hr, c = 10% in H2O

solubility

H2O: 0.1 g/mL, clear, colorless (warm)

SMILES string

O.OC[C@@H](O)[C@@H](O[C@@H]1O[C@H](CO)[C@H](O)[C@H](O)[C@H]1O)[C@H](O)[C@@H](O)C=O

InChI

1S/C12H22O11.H2O/c13-1-4(16)7(18)11(5(17)2-14)23-12-10(21)9(20)8(19)6(3-15)22-12;/h1,4-12,14-21H,2-3H2;1H2/t4-,5+,6+,7+,8-,9-,10+,11+,12-;/m0./s1

Inchi Key

HBDJFVFTHLOSDW-XBLONOLSSA-N

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Related Categories

Biochem/physiol Actions

Lactose is a dissacharide formed by the condensation of one galactose and one glucose molecule. Lactose is the major sugar in the milk of most species, typically present between 2-8%. The enzyme lactase hydrolyzes lactose to its constituent monosaccharides. In neonates, glucose released via the action of lactase is a major energy source.

Other Notes

Sales restrictions may apply

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

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Certificate of Origin

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