Cephalexin (Cefalexin) hydrochloride monohydrate is a potent, orally active, semisynthetic cephalosporin antibiotic with a broad antibacterial spectrum against a wide range of gram-positive and gram-negative bacteria. It operates by targeting penicillin-binding proteins (PBPs) to inhibit bacterial cell wall synthesis. This compound is utilized in the research of various bacterial infections, including pneumonia, strep throat, and bacterial endocarditis [1] [2].