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L8783 Sigma-Aldrich

α-Lactose monohydrate

BioXtra, ≥99% total lactose basis (GC)

Synonym: β-D-Gal-(1→4)-α-D-Glc, 4-O-β-D-Galactopyranosyl-α-D-glucose, Milk sugar

  • CAS Number 5989-81-1

  • Empirical Formula (Hill Notation) C12H22O11 · H2O

  • Molecular Weight 360.31

  •  MDL number MFCD00150747

  •  PubChem Substance ID 57654339

  •  NACRES NA.25

Purchase

Properties

Related Categories Biochemicals and Reagents, Carbohydrates, Carbohydrates A to Z, Carbohydrates H-L, Carbohydrates for Protein Stabilization,
Quality Level   200
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

Description

Packaging

1 kg in poly bottle

10 mg in glass 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.

Safety & Documentation

Safety Information

Personal Protective Equipment 
RIDADR 
NONH for all modes of transport
WGK Germany 
WGK 3
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable

Documents

Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles
Peer-Reviewed Papers
15

References

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