1-[[(6R,7R)-2-Carboxy-8-oxo-7-[(2-thienylacetyl)amino]-5-thia-1-azabicyclo[4.2.0]oct-2-en-3-yl]methyl]-pyridinium Thiocyanate is an intermediate used in the synthesis of Cephaloridine Monohydrate (C258600), which is a derivative of Cephalosporine C (C258750), an antibiotic used to study the effect of transpeptidase expression, binding, and inhibition on bacterial cell wall mucopeptide synthesis.