Cefaclor EP Impurity B with CAS No: 53994-69-7 is an impurity standard of Cefaclor. Cefaclor is a second-generation cephalosporin antibiotic used to treat bacterial infections. As a beta-lactam antibiotic, it works by interfering with the synthesis of the bacterial cell wall, leading to cell death. Cefaclor is effective against a wide range of bacteria, including both Gram-positive and Gram-negative organisms. It is commonly prescribed to treat respiratory tract infections, such as pneumonia, bronchitis, and otitis media, as well as skin and soft tissue infections. Cefaclor is administered orally in the form of capsules or oral suspension. Buy high quality Cefaclor EP Impurity B from Molsyns Research. Molsyns Research is one of the leading manufacturer and exporter of Cefaclor EP Impurity B