Sildenafil Impurity 5 CAS 1058653-74-9

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.1058653-74-9
Molecular FormulaC19H21ClN4O3
Molecular Weight388.85 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Sildenafil Impurity 5 CAS 1058653-74-9 chemical structure

Description

CATO supplies Sildenafil Impurity 5 (CAS 1058653-74-9), a pharmacopoeial impurity standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C19H21ClN4O3. Molecular weight: 388.85 g/mol. Batch-specific COA and technical support are available on request.

Physical & Chemical Properties

Molecular FormulaC19H21ClN4O3
Molecular Weight388.85 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor)
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)11.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1988
Halogen ContentCl-containing
Nitrogen Atoms4

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