T-91825 (PPI-0903M) is a potent N-phosphono-type cephalosporin compound, which serves as the active variant of TAK-599. It exhibits broad-spectrum activity against both gram-positive and gram-negative bacteria [1][2].
Ceftaroline fosamil (TAK-599) inner salt, a cephalosporin derivative, is an N-phosphono prodrug of anti-methicillin-resistant Staphylococcus aureus (MRSA) T-91825. Ceftaroline fosamil inner salt can be used for the research of MRSA infection.