Methotrexate Hydrate EP Impurity B CAS 1217459-90-9

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.1217459-90-9
Molecular FormulaC19H20N8O5 H2O
Molecular WeightN/A
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Methotrexate Hydrate EP Impurity B CAS 1217459-90-9 chemical structure

Description

High-purity Methotrexate Hydrate EP Impurity B (CAS 1217459-90-9) pharmacopoeial impurity standards reference standard. Molecular formula: C19H20N8O5 H2O. Produced by CATO, one of China's leading reference material manufacturers, with COA documentation and global shipping.

Physical & Chemical Properties

Molecular FormulaC19H20N8O5 H2O
Molecular Weight458.43 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
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
Degree of Unsaturation (DBE)13.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1990
Nitrogen Atoms8

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