Desogestrel EP Impurity B with CAS No: 54024-12-3 is an impurity standard of Desogestrel. Desogestrel is a synthetic progestin, a type of hormone similar to the naturally occurring progesterone. It is commonly used as a component in hormonal contraceptives, such as birth control pills. Desogestrel works by inhibiting ovulation (the release of an egg from the ovaries) and by altering the cervical mucus to make it more difficult for sperm to reach the egg. This dual mechanism helps prevent pregnancy. Buy high quality Desogestrel EP Impurity B from Molsyns Research. Molsyns Research is one of the leading manufacturer and exporter of Desogestrel EP Impurity B