Category:
Other Reagent
CAS NO:
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Standard:
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Cefditoren Impurity 4, also known as the cefditoren Δ-3 isomer, is a critical chiral impurity found during the synthesis of the cephalosporin antibiotic cefditoren pivoxil. It arises from stereochemical variations at the C-3 position of the dihydrothiazine ring. The molecular formula is typically C16H17N5O6S2 (exact structure dependent on specific isomer definition), with CAS numbers varying by specific registry.
Store strictly below -20°C in a desiccated environment to prevent racemization or hydrolysis. Handle only within certified fume hoods using appropriate PPE due to potential sensitization risks associated with beta-lactam derivatives. Do not use for clinical administration.