CAS No:56187-47-4||Chemical Formula:C18H15Cl2N5O5S3||Molecular Weight:548.42800||Exact Mass:546 96124||(6R,7R)-7-[[2-(3,5-Dichloro-4-oxo-1(4H)-pyridinyl)acetyl]amino]-3-[[(5-methyl-1,3,4-thiadiazol-2-yl)thio]methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid