Sildenafil Impurity 89 CAS 2520113-03-3

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.2520113-03-3
Molecular FormulaC25H34N6OS2
Molecular Weight498.71 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Sildenafil Impurity 89 CAS 2520113-03-3 chemical structure

Description

As a process- or degradation-related impurity, Sildenafil Impurity 89 (CAS 2520113-03-3, C25H34N6OS2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.

Owing to a steroid core, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, Sildenafil Impurity 89 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 498.71 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.

As a certified reference material (CRM), Sildenafil Impurity 89 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 FormulaC25H34N6OS2
Molecular Weight498.71 g/mol
Purity97%+
StorageStore at room temperature, protect from light
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)12.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2001
Nitrogen Atoms6
Sulfur Atoms2

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