Name: D-Lactose monohydrate, BioUltra, >=99.5% (HPLC)
Brand: SIGMA-ALDRICH
SKU: 61339-100G
Price: 189.00 EUR
Availability: InStock

Application

D-Lactose is a disaccharide of D-glucose and D-galactose units found as a major sugar in milk. D-Lactose is used for the culture of lactic acid metabolizing bacteria, lactic acid bacteria. D-Lactose is used to identify and characterized galectins.

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

Component of the liquid stationary phase in the GLC separation of nitroxylene and xylenol isomers

Sales restrictions may apply

λ	0.5 M in H₂O
anion traces	sulfate (SO₄^2-): ≤50 mg/kg, chloride (Cl^-): ≤50 mg/kg
assay	≥99.5% (HPLC)
cation traces	Bi: ≤5 mg/kg, Na: ≤50 mg/kg, Mo: ≤5 mg/kg, Al: ≤5 mg/kg, K: ≤50 mg/kg, As: ≤0.1 mg/kg, Li: ≤5 mg/kg, Cr: ≤5 mg/kg, Mn: ≤5 mg/kg, Sr: ≤5 mg/kg, Mg: ≤5 mg/kg, Ca: ≤10 mg/kg, Pb: ≤5 mg/kg, Cu: ≤5 mg/kg, Ba: ≤5 mg/kg, Fe: ≤5 mg/kg, Zn: ≤5 mg/kg, Ni: ≤5 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg
form	solid
ign. residue	≤0.05% (as SO₄)
impurities	insoluble matter, passes filter test
InChI key	HBDJFVFTHLOSDW-XBLONOLSSA-N
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
optical activity	[α]20/D +53±1°, 22 hr, c = 10% in H₂O
pH	3.5-6.0 (25 °C, 0.5 M in H₂O)
product line	BioUltra
Quality Level	100
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
solubility	H₂O: 0.5 M at 20 °C, clear, colorless
UV absorption	λ: 280 nm A_max: 0.02, λ: 260 nm A_max: 0.02

Safety Data Sheet for 61339-100G

Cas Number

64044-51-5

This product has met the following criteria to qualify for the following awards:

D-Lactose monohydrate, BioUltra, >=99.5% (HPLC)

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