Biochemistry is the study of the chemical substances and vital processes occurring in living organisms. Biochemists focus heavily on the role, function, and structure of biomolecules. The study of the chemistry behind biological processes and the synthesis of biologically active molecules are examples of biochemistry.
Mifepristone (or RU-486) is a synthetic, steroidal antiprogestogen and antiglucocorticoid pharmaceutical drug.ifepristone is sold in the United States by Danco Laboratories as Mifeprex and is U.S. Food and Drug Administration-approved to terminate intrauterine pregnancies of up to 49 days gestation.
The sooner it is taken, the more effective it is. Emergency contraception (EC) is not to be confused with RU-486 (mifepristone) , a pill that causes medical abortion in pregnant women within 49 days from the first day of their last menstrual period.