产品描述:
Norgestrel is a synthetic progestin and a racemic mixture of dextronorgestrel and levonorgestrel (Item No. 10006318), of which levonorgestrel is the biologically active component.{39728} In vivo, norgestrel administered via intrauterine device (IUD) prevents pregnancy in rats.{39733} Formulations containing nogestrel have been used as contraceptives.