4-[2-[[(6R,7R)-7-[[(2Z)-2-(5-Amino-1,2,4-thiadiazol-3-yl)-2-(ethoxyimino)acetyl]amino]-2-carboxy-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-en-3-yl]thio]-4-thiazolyl]-1-methyl-pyridinium, Inner Salt-d3; T 91825-d3;
PPI 0903M-d3 is an isotope labelled compound of PPI 0903M (P698915). PPI 0903M are used in the phase 2 study of ceftaroline versus standard therapy in treatment of complicated skin and skin structure infections.