Prostaglandin G2 (PGG2) serves as the initial stable intermediate in the COX pathway, identifiable and characterizable due to its stability. This compound is identified as the C-15 hydroperoxide derivative of PGH2. Typically, PGG2 undergoes rapid metabolism via the inherent peroxidase activity of both COX-1 and COX-2 enzymes, resulting in the production of PGH2. PGH2 is crucial as it is the primary precursor for the generation of 2-series prostaglandins and thromboxanes.