Vinclozolin M2, an active metabolite of vinclozolin, is generated through successive esterase activity and decarboxylation in C. elegans, as well as decarboxylation in human liver microsomes. It functions as an antagonist to the mineralocorticoid (IC50= 1,400 nM) and androgen receptors (IC50= 0.17 nM), demonstrated in reporter assays with MCF-7 cells. This compound is exclusively sold for research and analytical purposes, tailored for controlled laboratory use, and is not available in bulk sizes.