Tazarotenic acid -13C2,d2 (AGN 190299-13C2,d2) is the 13 C and deuterium labeled isotope of Tazarotenic acid. Tazarotenic acid is the metabolite of Tazarotene. Tazarotenic acid binding to retinoic acid receptors (RARs) is the probable molecular target of retinoid action. Tazarotenic acid has the potential for the research of warty dyskeratoma.