Alpha-D(+)-Lactose Monohydrate CAS 5989-81-1

Purity >95%In StockPharmaceutical Standards
CAS No.5989-81-1
Molecular FormulaC12H22O11
Molecular WeightN/A
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Alpha-D(+)-Lactose Monohydrate CAS 5989-81-1 chemical structure

Description

This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

Alpha-D(+)-Lactose Monohydrate (CAS 5989-81-1), molecular formula C12H22O11H2O and molecular weight 360.31 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to a carbohydrate-derived structure, Alpha-D(+)-Lactose Monohydrate is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 360.31 g/mol — guide the selection of appropriate sample preparation and analytical techniques.

As a certified reference material (CRM), Alpha-D(+)-Lactose Monohydrate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaC12H22O11 H2O
Molecular Weight360.31 g/mol
Purity>95%
StorageStore in a cool place (≤25°C), keep sealed and dry
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityHygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)1.0
CAS Registry Year (est.)1958

Recommended Standards

Why CATO?