Category:
Other Reagent
CAS NO:
22252-43-3
Standard:
/,
Cefadroxil EP Impurity B and Cephalexin Impurity B (CAS 72584-69-1) are critical reference standards for beta-lactam antibiotics. Synthesized via acylation of 7-ADCA, these impurities share the core structure with molecular formula C16H18N2O5S.
Store below -20°C in sealed, dry containers away from light. Avoid direct skin contact due to potential sensitization; use appropriate PPE during handling.