SPL Set ID: eccf9fd9-53ac-4252-a106-5567b3a82a70

ZEMDRI contains plazomicin sulfate, a semi-synthetic aminoglycoside antibacterial derived from sisomicin. The chemical name of plazomicin sulfate is (2" R ,3" R ,4" R ,5" R )-2"-[(1 S ,2 S ,3 R ,4 S ,6 R )-4-amino-6-[(2'" S )-4'"-amino-2'"-hydroxybutanamido)amino]-3-[(2' S ,3' R )-3'-amino-6'-((2-hydroxyethylamino)methyl)-3',4'-dihydro-2H-pyran-2'-yloxy]-2-hydroxycyclohexyloxy]-5''-methyl-4''-(methylamino)tetrahydro-2H-pyran-3'',5''-diol sulfate. Plazomicin sulfate contains a theoretical 2.5 molar equivalents of sulfate relative to the freebase, based on complete protonation. The molecular weight of plazomicin sulfate is calculated based on 1:2.5 stoichiometry. The corresponding empirical formula is C 25 H 48 N 6 O 10 ∙2.5 H 2 SO 4 (plazomicin sulfate) and the molecular weight of the plazomicin sulfate salt is 837.89 g/mol and the molecular weight of the freebase is 592.69 g/mol. Figure 1: Chemical Structure of Plazomicin Sulfate ZEMDRI injection 500 mg/10 mL is a sterile, clear, colorless-to-yellow liquid for intravenous administration supplied in 10-mL single-dose Type 1 glass vials. Each vial contains plazomicin sulfate equivalent to 500 mg plazomicin freebase at a concentration of 50 mg/mL adjusted to pH 6.5. Each vial also contains Water for Injection and sodium hydroxide for pH adjustment. This sterile, nonpyrogenic solution is formulated without preservatives. Chemical Structure