Category:
Active Pharmaceutical Ingredients
CAS NO:
19883-41-1
Standard:
EP,
Cephalexin Impurity 1, chemically known as (6R)-3-methyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid, is a critical degradation product and synthetic intermediate in the manufacturing of the first-generation cephalosporin antibiotic Cephalexin. Its molecular formula is C8H9NO4S (CAS No. 15329-16-7). This impurity typically arises during the acylation step or due to hydrolytic instability.
Store strictly below -20°C in a desiccated environment to prevent hydrolysis. Handle with appropriate PPE including gloves and goggles, as it may cause skin irritation. Do not use as a therapeutic agent; it is intended solely for analytical and research purposes.