Aztreonam impurity 70 CAS CATO-C4X-152270

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-152270
Molecular FormulaC4H8N2O4S
Molecular Weight180.18 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Aztreonam impurity 70 CAS CATO-C4X-152270 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.

CATO supplies Aztreonam impurity 70 (CAS CATO-C4X-152270), a pharmacopoeial impurity reference standard (molecular formula C4H8N2O4S, MW 180.18 g/mol) used for the identification and quantification of trace impurities in APIs.

Owing to a carbohydrate-derived structure, an amide group, a sulfone group, Aztreonam impurity 70 is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 180.18 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.

Physical & Chemical Properties

Molecular FormulaC4H8N2O4S
Molecular Weight180.18 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityLight-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)2.0
Nitrogen Atoms2
Sulfur Atoms1

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