Merck
All Photos(2)

L8783

Sigma-Aldrich

α-Lactose monohydrate

BioXtra, ≥99% total lactose basis (GC)

Synonym(s):
4-O-β-D-Galactopyranosyl-α-D-glucose, Milk sugar, β-D-Gal-(1→4)-α-D-Glc
Empirical Formula (Hill Notation):
C12H22O11 · H2O
CAS Number:
Molecular Weight:
360.31
MDL number:
PubChem Substance ID:
NACRES:
NA.25

Quality Level

biological source

bovine milk

product line

BioXtra

assay

≥99% total lactose basis (GC)

form

powder

impurities

≤0.01% Phosphorus (P)
≤0.1% Insoluble matter

ign. residue

≤0.1%

solubility

H2O: 1 M, clear, colorless

anion traces

chloride (Cl-): ≤0.05%
sulfate (SO42-): ≤0.05%

cation traces

Al: ≤0.0005%
Ca: ≤0.005%
Cu: ≤0.0005%
Fe: ≤0.0005%
K: ≤0.02%
Mg: ≤0.0005%
NH4+: ≤0.05%
Na: ≤0.005%
Pb: ≤0.001%
Zn: ≤0.0005%

SMILES string

[H]O[H].OC[C@H]1O[C@@H](O[C@H]2[C@H](O)[C@@H](O)[C@@H](O)O[C@@H]2CO)[C@H](O)[C@@H](O)[C@H]1O

InChI

1S/C12H22O11.H2O/c13-1-3-5(15)6(16)9(19)12(22-3)23-10-4(2-14)21-11(20)8(18)7(10)17;/h3-20H,1-2H2;1H2/t3-,4-,5+,6+,7-,8-,9-,10-,11+,12+;/m1./s1

InChI key

WSVLPVUVIUVCRA-KPKNDVKVSA-N

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Packaging

10 mg in glass bottle
1 kg in poly bottle
5 kg in poly drum

Biochem/physiol Actions

alpha-Lactose is the primary sugar present in milk and the main energy source to a newborn mammalian through its mother′s milk. It is digested by the intestinal lactase (EC 3.2.1.108), an enzyme expressed in newborns. The enzyme′s activity declines following weaning which can lead to lactose intolerance in adult mammals.

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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