Thiazolylacetylglycine Oxime- 13C2,15N, is the labaled analogue of Thiazolylacetylglycine Oxime (T344230), which is one of the novel compounds, used in the synthesis of Cefdinir (C242670), a third generation Cephalosporin antibiotic for oral administration and has a broad antibacterial spectrum over the gram positive and gram negative bacteria.