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Merck
CN

1356676

USP

Anhydrous lactose

United States Pharmacopeia (USP) Reference Standard

Synonym(s):

Lactose, (+)-Lactose, 4-O-Β-D-Galactopyranosyl-D-glucopyranose

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About This Item

Empirical Formula (Hill Notation):
C12H22O11
CAS Number:
63-42-3
Molecular Weight:
342.30
UNSPSC Code:
41116107
NACRES:
NA.24
PubChem Substance ID:
329750220
MDL number:
MFCD00151251
Beilstein/REAXYS Number:
93796

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Product Name

Anhydrous lactose, United States Pharmacopeia (USP) Reference Standard

InChI key

DKXNBNKWCZZMJT-JVCRWLNRSA-N

SMILES string

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/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/t4-,5+,6+,7+,8-,9-,10+,11+,12-/m0/s1

grade

pharmaceutical primary standard

API family

lactose

manufacturer/tradename

USP

application(s)

cleaning products
cosmetics
food and beverages
personal care
pharmaceutical (small molecule)

format

neat

storage temp.

2-8°C

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Analysis Note

These products are for test and assay use only. They are not meant for administration to humans or animals and cannot be used to diagnose, treat, or cure diseases of any kind.  ​

Application

Anhydrous lactose USP reference standard, intended for use in specified quality tests and assays as specified in the USP compendia. Also, for use with USP monographs such as:
  • Lactulose Concentrate
  • Lactulose Solution
  • Galactose
  • Compressible Sugar
  • Sugar Spheres
  • Confectioner′s Sugar

General description

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the issuing Pharmacopoeia. For further information and support please go to the website of the issuing Pharmacopoeia.

Other Notes

Sales restrictions may apply.

Storage Class

11 - Combustible Solids

wgk

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

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Lactulose Solution
United States Pharmacopeia, 40(5, 2522-2522 (2016)
Lactulose Concentrate
United States Pharmacopeia, 40(5), 2521-2521 (2016)
Anhydrous Lactose
United States Pharmacopeia, 46(5), 5847-5847 (2020)
Galactose
United States Pharmacopeia, 44(5) (2020)
Matthew D Jones et al.
Advanced drug delivery reviews, 64(3), 285-293 (2012-01-24)
Inverse gas chromatography (IGC) is a sensitive technique for the measurement of powder surface properties, especially surface energetics. Given the importance of these characteristics to the performance of dry powder inhaler formulations (DPIs), it is unsurprising that IGC has been
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