Methotrexate Impurity 43 CAS 79974-20-2

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.79974-20-2
Molecular FormulaC14H18N2O5
Molecular Weight294.30 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Methotrexate Impurity 43 CAS 79974-20-2 chemical structure

Description

CATO supplies Methotrexate Impurity 43 (CAS 79974-20-2), a pharmacopoeial impurity standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C14H18N2O5. Molecular weight: 294.30 g/mol. Batch-specific COA and technical support are available on request.

Physical & Chemical Properties

Molecular FormulaC14H18N2O5
Molecular Weight294.30 g/mol
AppearanceOff-white to pale yellow crystalline powder
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
Degree of Unsaturation (DBE)7.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1979
Nitrogen Atoms2

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