Category:
Preclinical Research Services
CAS NO:
54-62-6
Standard:
USP, EP,
Methotrexate EP Impurity B (CAS 988-70-5) is a critical reference standard for quality control, defined by the European Pharmacopoeia as 2-amino-4-hydroxy-6-methylpteridine. It serves as an essential degradation product in the synthesis of methotrexate, utilized to validate purity profiles during pharmaceutical manufacturing.
Store at -20°C in a dry, inert atmosphere to prevent hydrolysis. Handle with appropriate PPE due to potential cytotoxicity; avoid inhalation or skin contact during weighing procedures.