Ethynyl Estradiol-d4

Ethynyl Estradiol-d4 is the deuterium labeled Ethynyl Estradiol. Ethynyl Estradiol (17α-Ethynylestradiol;Ethynylestradiol) is an orally bio-active estrogen used in almost all modern formulations of combined oral contraceptive pills. Ethynyl Estradiol-d4 is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.