Levonorgestrel-D8 (D-Norgestrel-D8) 是 Levonorgestrel 的氘代物。Levonorgestrel是合成孕激素，可作用于孕酮受体。
Levonorgestrel-D8 (D-Norgestrel-D8) is the deuterium labeled Levonorgestrel. Levonorgestrel is a synthetic progestogen used as an active ingredient in some hormonal contraceptives[1][2].
Stable heavy isotopes of hydrogen, carbon, and other elements have been incorporated into drug molecules, largely as tracers for quantitation during the drug development process. Deuteration has gained attention because of its potential to affect the pharmacokinetic and metabolic profiles of drugs[1].
[1]. Russak EM, et al. Impact of Deuterium Substitution on the Pharmacokinetics of Pharmaceuticals. Ann Pharmacother. 2019;53(2):211-216. [2]. Gallos, I.D., et al., Oral progestogens vs levonorgestrel-releasing intrauterine system for endometrial hyperplasia: a systematic review and metaanalysis. Am J Obstet Gynecol, 2010. 203(6): p. 547 e1-10.
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