Ceftolozane
Ceftolozane is a fifth-generation cephalosporin antibiotic having (5-amino-4-{[(2-aminoethyl)carbamoyl]amino}-1-methyl-1H-pyrazol-2-ium-2-yl)methyl and [(2Z)-2-(5-amino-1,2,4-thiadiazol-3-yl)-2-{[(2-carboxypropan-2-yl)oxy]imino}acetyl]amino side groups located at positions 3 and 7 respectively; developed for the treatment of infections with gram-negative bacteria that have become resistant to conventional antibiotics. It is a cephalosporin and a member of thiadiazoles.