Pyrimethamine EP Impurity A CAS 55474-40-3

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.55474-40-3
Molecular FormulaC11H10ClNO
Molecular Weight207.66 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Pyrimethamine EP Impurity A CAS 55474-40-3 chemical structure

Description

Pyrimethamine EP Impurity A (CAS 55474-40-3) is a pharmacopoeial impurity standards certified reference material from CATO. Molecular formula: C11H10ClNO. Molecular weight: 207.66 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.

Physical & Chemical Properties

Molecular FormulaC11H10ClNO
Molecular Weight207.66 g/mol
Purity>95%
StorageStore at 2-8°C, protect from light, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)7.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1972
Halogen ContentCl-containing
Nitrogen Atoms1

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