(6R-trans)-7-[[(2-Amino-4-thiazolyl)acetyl]amino]-3-ethenyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid

This compound is a cephalosporin-class active pharmaceutical ingredient (API) used as a raw material in pharmaceutical manufacturing and research. It features a beta-lactam ring fused to a thiazolidine ring, with an aminothiazolyl side chain.