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  5. α-Lactose

α-Lactose  (Synonyms: α-D-Lactose)

Cat. No.: HY-N2514 Purity: ≥98.0%
COA Handling Instructions

Molarity Calculator

α-Lactose (α-D-Lactose) is the major sugar present in milk. Lactose exists in the form of two anomers, α and β. The α form normally crystallizes as a monohydrate.

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α-Lactose Chemical Structure

α-Lactose Chemical Structure

CAS No. : 14641-93-1

Size Price Stock Quantity
Solid + Solvent
10 mM * 1 mL in Water
ready for reconstitution
 USD 33 In-stock
Solution
10 mM * 1 mL in Water USD 33 In-stock
Solid
1 g USD 30 In-stock
5 g USD 60 In-stock
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Based on 1 publication(s) in Google Scholar

Other Forms of α-Lactose:

α-Lactose Related Antibodies

Top Publications Citing Use of Products

  • Biological Activity

  • Purity & Documentation

  • References

  • Customer Review

Description

α-Lactose (α-D-Lactose) is the major sugar present in milk. Lactose exists in the form of two anomers, α and β. The α form normally crystallizes as a monohydrate[1][2].

In Vitro

Lactose is a very important sugar because of its abundance in the milk of humans and domestic animals. Lactose is a valuable asset as a basic nutrient and the main substrate in fermentative processes that led to the production of fermented milk products, such as yogurt and kefir[3].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

α-Lactose Related Antibodies
Molecular Weight

342.30

Formula

C12H22O11
CAS No.
Appearance

Solid

Color

White to light yellow

SMILES

OC[C@H]([C@H](O)[C@H](O)[C@H]1O)O[C@@]1([H])O[C@@H]2[C@H](O[C@H](O)[C@H](O)[C@H]2O)CO
Structure Classification
Initial Source

milk of humans and domestic animals
Shipping

Room temperature in continental US; may vary elsewhere.
Storage

4°C, sealed storage, away from moisture

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

Solvent & Solubility
In Vitro: 

H2O : 62.5 mg/mL (182.59 mM; Need ultrasonic)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.9214 mL 14.6071 mL 29.2141 mL
5 mM 0.5843 mL 2.9214 mL 5.8428 mL
View the Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

  • Molarity Calculator

  • Dilution Calculator

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

Mass
=
Concentration
×
Volume
×
Molecular Weight *

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

×
Volume (start)

V1

=
Concentration (final)

C2

×
Volume (final)

V2

In Vivo:

For the following dissolution methods, please prepare the working solution directly. It is recommended to prepare fresh solutions and use them promptly within a short period of time.
The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

  • Protocol 1

    Add each solvent one by one:  PBS

    Solubility: 25 mg/mL (73.04 mM); Clear solution; Need ultrasonic and warming and heat to 60°C

In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:

Dosage

mg/kg

Animal weight
(per animal)

g

Dosing volume
(per animal)

μL

Number of animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Calculation results:
Working solution concentration: mg/mL
This product has good water solubility, please refer to the measured solubility data in water/PBS/Saline for details.
The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only.If necessary, please contact MedChemExpress (MCE).
Purity & Documentation

Purity: ≥98.0%

COA (255 KB) HNMR (272 KB)

Handling Instructions (2659 KB)
References

Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
H2O 1 mM 2.9214 mL 14.6071 mL 29.2141 mL 73.0354 mL
5 mM 0.5843 mL 2.9214 mL 5.8428 mL 14.6071 mL
10 mM 0.2921 mL 1.4607 mL 2.9214 mL 7.3035 mL
15 mM 0.1948 mL 0.9738 mL 1.9476 mL 4.8690 mL
20 mM 0.1461 mL 0.7304 mL 1.4607 mL 3.6518 mL
25 mM 0.1169 mL 0.5843 mL 1.1686 mL 2.9214 mL
30 mM 0.0974 mL 0.4869 mL 0.9738 mL 2.4345 mL
40 mM 0.0730 mL 0.3652 mL 0.7304 mL 1.8259 mL
50 mM 0.0584 mL 0.2921 mL 0.5843 mL 1.4607 mL
60 mM 0.0487 mL 0.2435 mL 0.4869 mL 1.2173 mL
80 mM 0.0365 mL 0.1826 mL 0.3652 mL 0.9129 mL
100 mM 0.0292 mL 0.1461 mL 0.2921 mL 0.7304 mL

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

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Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

Keywords:

α-Lactose14641-93-1α-D-LactoseOtherssugarmilkanomersmonohydratenutrientInhibitorinhibitorinhibit

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