Avanafil Impurity 99 CAS 1643811-21-5

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.1643811-21-5
Molecular FormulaC21H20Cl2N4O4
Molecular Weight463.31 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Avanafil Impurity 99 CAS 1643811-21-5 chemical structure

Description

High-purity Avanafil Impurity 99 (CAS 1643811-21-5) pharmacopoeial impurity standards reference standard. Molecular formula: C21H20Cl2N4O4. Molecular weight: 463.31 g/mol. Produced by CATO, one of China's leading reference material manufacturers, with COA documentation and global shipping.

Physical & Chemical Properties

Molecular FormulaC21H20Cl2N4O4
Molecular Weight463.31 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor, low volatility)
Purity>95%
StorageStore in a cool place (≤25°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)13.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1993
Halogen ContentCl-containing
Nitrogen Atoms4

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