a-Galactosyl-C18-ceramide CAS 148347-40-4

Purity 97%+In StockPharmaceutical Standards
CAS No.148347-40-4
Molecular FormulaC42H81NO8
Molecular Weight728.09 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

a-Galactosyl-C18-ceramide CAS 148347-40-4 chemical structure

Description

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

a-Galactosyl-C18-ceramide (CAS 148347-40-4), molecular formula C42H81NO8 and molecular weight 728.09 g/mol, is a CATO reference standard with documented purity and traceability.

a-Galactosyl-C18-ceramide (C42H81NO8) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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.

Physical & Chemical Properties

Molecular FormulaC42H81NO8
Molecular Weight728.09 g/mol
Purity97%+
StorageStore at room temperature, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)3.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1999
Nitrogen Atoms1

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